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| Mnemonic | Title | RFC# | 
| -------- | Internationalized Delivery Status and Disposition Notifications | 6533* | 
| -------- | Internationalized Email Headers | 6532* | 
| -------- | SMTP Extension for Internationalized Email | 6531* | 
| -------- | Overview and Framework for Internationalized Email | 6530* | 
| -------- | Defending against Sequence Number Attacks | 6528* | 
| -------- | Transport Layer Security (TLS) and Datagram Transport Layer Security (DTLS) Heartbeat Extension | 6520* | 
| -------- | RADIUS Extensions for Dual-Stack Lite | 6519* | 
| -------- | IPv6 Multicast VPN (MVPN) Support Using PIM Control Plane and Selective Provider Multicast Service Interface (S-PMSI) Join Messages | 6516* | 
| -------- | IPv4 and IPv6 Infrastructure Addresses in BGP Updates for Multicast VPN | 6515* | 
| -------- | BGP Encodings and Procedures for Multicast in MPLS/BGP IP VPNs | 6514* | 
| -------- | Multicast in MPLS/BGP IP VPNs | 6513* | 
| -------- | Using Multipoint LDP When the Backbone Has No Route to the Root | 6512* | 
| -------- | Non-Penultimate Hop Popping Behavior and Out-of-Band Mapping for RSVP-TE Label Switched Paths | 6511* | 
| -------- | Resource Reservation Protocol (RSVP) Message Formats for Label Switched Path (LSP) Attributes Objects | 6510* | 
| -------- | Supporting Authentication Trailer for OSPFv3 | 6506* | 
| -------- | Subject Key Identifier (SKI) SEcure Neighbor Discovery (SEND) Name Type Fields | 6495* | 
| -------- | Certificate Profile and Certificate Management for SEcure Neighbor Discovery (SEND) | 6494* | 
| -------- | The Resource Public Key Infrastructure (RPKI) Ghostbusters Record | 6493* | 
| -------- | A Protocol for Provisioning Resource Certificates | 6492* | 
| -------- | Resource Public Key Infrastructure (RPKI) Objects Issued by IANA | 6491* | 
| -------- | Resource Public Key Infrastructure (RPKI) Trust Anchor Locator | 6490* | 
| -------- | Signed Object Template for the Resource Public Key Infrastructure (RPKI) | 6488* | 
| -------- | A Profile for X.509 PKIX Resource Certificates | 6487* | 
| -------- | Manifests for the Resource Public Key Infrastructure (RPKI) | 6486* | 
| -------- | The Profile for Algorithms and Key Sizes for Use in the Resource Public Key Infrastructure (RPKI) | 6485* | 
| -------- | A Profile for Route Origin Authorizations (ROAs) | 6482* | 
| -------- | A Profile for Resource Certificate Repository Structure | 6481* | 
| -------- | Using Message Authentication Code (MAC) Encryption in the Cryptographic Message Syntax (CMS) | 6476* | 
| -------- | vCard Format Extensions: Place of Birth, Place and Date of Death | 6474* | 
| -------- | vCard KIND:application | 6473* | 
| -------- | Network Configuration Protocol (NETCONF) Base Notifications | 6470* | 
| -------- | RTP Payload Format for DV (IEC 61834) Video | 6469* | 
| -------- | IANA Registration of the 'image' Media Type for the Session Description Protocol (SDP) | 6466* | 
| -------- | A Real-time Transport Protocol (RTP) Header Extension for Mixer-to-Client Audio Level Indication | 6465* | 
| -------- | A Real-time Transport Protocol (RTP) Header Extension for Client-to-Mixer Audio Level Indication | 6464* | 
| -------- | Runtime Local Mobility Anchor (LMA) Assignment Support for Proxy Mobile IPv6 | 6463* | 
| -------- | The WebSocket Protocol | 6455* | 
| -------- | The Web Origin Concept | 6454* | 
| -------- | The Unicode Code Points and Internationalized Domain Names for Applications (IDNA) - Unicode 6.0 | 6452* | 
| -------- | Multicast Ping Protocol | 6450* | 
| -------- | The Unencrypted Form of Kerberos 5 KRB-CRED Message | 6448* | 
| -------- | Filtering Location Notifications in the Session Initiation Protocol (SIP) | 6447* | 
| -------- | Session Initiation Protocol (SIP) Event Notification Extension for Notification Rate Control | 6446* | 
| -------- | Multiprotocol Label Switching (MPLS) Traffic Engineering Management Information Base for Fast Reroute | 6445* | 
| -------- | Location Conveyance for the Session Initiation Protocol | 6442* | 
| -------- | The EAP Re-authentication Protocol (ERP) Local Domain Name DHCPv6 Option | 6440* | 
| -------- | Routing Bridges (RBridges): Appointed Forwarders | 6439* | 
| -------- | Using the IPv6 Flow Label for Equal Cost Multipath Routing and Link Aggregation in Tunnels | 6438* | 
| -------- | IPv6 Flow Label Specification | 6437* | 
| -------- | MPLS Transport Profile Lock Instruct and Loopback Functions | 6435* | 
| -------- | Carrying Q.850 Codes in Reason Header Fields in SIP (Session Initiation Protocol) Responses | 6432* | 
| -------- | Email Feedback Report Type Value: not-spam | 6430* | 
| -------- | Proactive Connectivity Verification, Continuity Check, and Remote Defect Indication for the MPLS Transport Profile | 6428* | 
| -------- | MPLS Fault Management Operations, Administration, and Maintenance (OAM) | 6427* | 
| -------- | MPLS On-Demand Connectivity Verification and Route Tracing | 6426* | 
| -------- | Detecting Data-Plane Failures in Point-to-Multipoint MPLS - Extensions to LSP Ping | 6425* | 
| -------- | Mechanism for Performing Label Switched Path Ping (LSP Ping) over MPLS Tunnels | 6424* | 
| -------- | Using the Generic Associated Channel Label for Pseudowire in the MPLS Transport Profile (MPLS-TP) | 6423* | 
| -------- | Relay-Supplied DHCP Options | 6422* | 
| -------- | PIM Multi-Topology ID (MT-ID) Join Attribute | 6420* | 
| -------- | RTP Payload Format for MPEG-4 Audio/Visual Streams | 6416* | 
| -------- | Web Host Metadata | 6415* | 
| -------- | Diameter Straightforward-Naming Authority Pointer (S-NAPTR) Usage | 6408* | 
| -------- | The Group Domain of Interpretation | 6407* | 
| -------- | Certificate Management over CMS (CMC) Updates | 6402* | 
| -------- | RSVP Extensions for Admission Priority | 6401* | 
| -------- | Multi-Threaded Routing Toolkit (MRT) Border Gateway Protocol (BGP) Routing Information Export Format with Geo-Location Extensions | 6397* | 
| -------- | Multi-Threaded Routing Toolkit (MRT) Routing Information Export Format | 6396* | 
| -------- | An Interface Identifier (ID) Hello Option for PIM | 6395* | 
| -------- | Flow-Aware Transport of Pseudowires over an MPLS Packet Switched Network | 6391* | 
| -------- | MPLS Upstream Label Assignment for LDP | 6389* | 
| -------- | Label Distribution Protocol Extensions for Point-to-Multipoint and Multipoint-to-Multipoint Label Switched Paths | 6388* | 
| -------- | GMPLS Asymmetric Bandwidth Bidirectional Label Switched Paths (LSPs) | 6387* | 
| -------- | An FTP Application Layer Gateway (ALG) for IPv6-to-IPv4 Translation | 6384* | 
| -------- | The 'Codecs' and 'Profiles' Parameters for "Bucket" Media Types | 6381* | 
| -------- | MPLS Transport Profile (MPLS-TP) Linear Protection | 6378* | 
| -------- | Packet Loss and Delay Measurement for MPLS Networks | 6374* | 
| -------- | MPLS Transport Profile (MPLS-TP) Identifiers | 6370* | 
| -------- | Internal BGP as the Provider/Customer Edge Protocol for BGP/MPLS IP Virtual Private Networks (VPNs) | 6368* | 
| -------- | Session Description Protocol Elements for the Forward Error Correction (FEC) Framework | 6364* | 
| -------- | Forward Error Correction (FEC) Framework | 6363* | 
| -------- | PPP Transparent Interconnection of Lots of Links (TRILL) Protocol Control Protocol | 6361* | 
| -------- | Definition of the UUID-Based DHCPv6 Unique Identifier (DUID-UUID) | 6355* | 
| -------- | Forward-Shifted RTP Redundancy Payload Support | 6354* | 
| -------- | CardDAV: vCard Extensions to Web Distributed Authoring and Versioning (WebDAV) | 6352* | 
| -------- | xCard: vCard XML Representation | 6351* | 
| -------- | vCard Format Specification | 6350* | 
| -------- | Datagram Transport Layer Security Version 1.2 | 6347* | 
| -------- | Protocol for Carrying Authentication for Network Access (PANA) Relay Element | 6345* | 
| -------- | Operating Virtual Concatenation (VCAT) and the Link Capacity Adjustment Scheme (LCAS) with Generalized Multi-Protocol Label Switching (GMPLS) | 6344* | 
| -------- | Textual Conventions for the Representation of Floating-Point Numbers | 6340* | 
| -------- | Context Token Encapsulate/Decapsulate and OID Comparison Functions for the Generic Security Service Application Program Interface (GSS-API) | 6339* | 
| -------- | IANA Registry for Interactive Connectivity Establishment (ICE) Options | 6336* | 
| -------- | Dynamic Host Configuration Protocol for IPv6 (DHCPv6) Option for Dual-Stack Lite | 6334* | 
| -------- | Dual-Stack Lite Broadband Deployments Following IPv4 Exhaustion | 6333* | 
| -------- | Multicast Acquisition Report Block Type for RTP Control Protocol (RTCP) Extended Reports (XRs) | 6332* | 
| -------- | RaptorQ Forward Error Correction Scheme for Object Delivery | 6330* | 
| -------- | Routing Bridges (RBridges): Adjacency | 6327* | 
| -------- | Transparent Interconnection of Lots of Links (TRILL) Use of IS-IS | 6326* | 
| -------- | Routing Bridges (RBridges): Base Protocol Specification | 6325* | 
| -------- | Sender RTT Estimate Option for the Datagram Congestion Control Protocol (DCCP) | 6323* | 
| -------- | xCal: The XML Format for iCalendar | 6321* | 
| -------- | Protocol for Access Node Control Mechanism in Broadband Networks | 6320* | 
| -------- | Export of Structured Data in IP Flow Information Export (IPFIX) | 6313* | 
| -------- | Protocol Support for High Availability of IKEv2/IPsec | 6311* | 
| -------- | Pseudowire (PW) Operations, Administration, and Maintenance (OAM) Message Mapping | 6310* | 
| -------- | IANA Rules for MIKEY (Multimedia Internet KEYing) | 6309* | 
| -------- | Computing TCP's Retransmission Timer | 6298* | 
| -------- | RTP Payload Format for MIDI | 6295* | 
| -------- | A Quick Crash Detection Method for the Internet Key Exchange Protocol (IKE) | 6290* | 
| -------- | Autonomous-System-Wide Unique BGP Identifier for BGP-4 | 6286* | 
| -------- | Unicast-Based Rapid Acquisition of Multicast RTP Sessions | 6285* | 
| -------- | Port Mapping between Unicast and Multicast RTP Sessions | 6284* | 
| -------- | Extensible Markup Language Evidence Record Syntax (XMLERS) | 6283* | 
| -------- | Compression Format for IPv6 Datagrams over IEEE 802.15.4-Based Networks | 6282* | 
| -------- | Online Certificate Status Protocol Algorithm Agility | 6277* | 
| -------- | DHCPv6 Prefix Delegation for Network Mobility (NEMO) | 6276* | 
| -------- | Mobility Support in IPv6 | 6275* | 
| -------- | The 'tn3270' URI Scheme | 6270* | 
| -------- | Use of the Content-Disposition Header Field in the Hypertext Transfer Protocol (HTTP) | 6266* | 
| -------- | HTTP State Management Mechanism | 6265* | 
| -------- | Application Mechanism for Keeping Alive the NAT Mappings Associated with RTP / RTP Control Protocol (RTCP) Flows | 6263* | 
| -------- | RTP Payload Format for IP-MR Speech Codec | 6262* | 
| -------- | Metalink/HTTP: Mirrors and Hashes | 6249* | 
| -------- | Generic Routing Encapsulation (GRE) Key Extension for Mobile IPv4 | 6245* | 
| -------- | With-defaults Capability for NETCONF | 6243* | 
| -------- | Using the NETCONF Protocol over Secure Shell (SSH) | 6242* | 
| -------- | Network Configuration Protocol (NETCONF) | 6241* | 
| -------- | Synchronous Optical Network/Synchronous Digital Hierarchy (SONET/SDH) Circuit Emulation over Packet (CEP) MIB Using SMIv2 | 6240* | 
| -------- | Negotiation of Generic Image Attributes in the Session Description Protocol (SDP) | 6236* | 
| -------- | IS-IS Registry Extension for Purges | 6233* | 
| -------- | Purge Originator Identification TLV for IS-IS | 6232* | 
| -------- | An Interactive Voice Response (IVR) Control Package for the Media Control Channel Framework | 6231* | 
| -------- | Media Control Channel Framework | 6230* | 
| -------- | Session Initiation Protocol (SIP) Response Code for Indication of Terminated Dialog | 6228* | 
| -------- | PIM Group-to-Rendezvous-Point Mapping | 6226* | 
| -------- | Dynamic Host Configuration Protocol Options for Coordinate-Based Location Configuration Information | 6225* | 
| -------- | Indication of Support for Keep-Alive | 6223* | 
| -------- | Guidelines for Choosing RTP Control Protocol (RTCP) Canonical Names (CNAMEs) | 6222* | 
| -------- | Lightweight DHCPv6 Relay Agent | 6221* | 
| -------- | IS-IS BFD-Enabled TLV | 6213* | 
| -------- | Authentication-Results Registration for Vouch by Reference Results | 6212* | 
| -------- | Cryptographic Message Syntax (CMS) Algorithm Identifier Protection Attribute | 6211* | 
| -------- | The Trickle Algorithm | 6206* | 
| -------- | Generalized Labels for Lambda-Switch-Capable (LSC) Label Switching Routers | 6205* | 
| -------- | IMAP4 Extension for Fuzzy Search | 6203* | 
| -------- | Moving mailserver: URI Scheme to Historic | 6196* | 
| -------- | RTP Payload Format for Scalable Video Coding | 6190* | 
| -------- | The Use of AES-192 and AES-256 in Secure RTP | 6188* | 
| -------- | X.509v3 Certificates for Secure Shell Authentication | 6187* | 
| -------- | Use of SRV Records for Locating Email Submission/Access Services | 6186* | 
| -------- | RTP Payload Format for H.264 Reduced-Complexity Decoding Operation (RCDO) Video | 6185* | 
| -------- | RTP Payload Format for H.264 Video | 6184* | 
| -------- | Label Edge Router Forwarding of IPv4 Option Packets | 6178* | 
| -------- | Prohibiting Secure Sockets Layer (SSL) Version 2.0 | 6176* | 
| -------- | Definitions of Managed Objects for the Internet Fibre Channel Protocol (iFCP) | 6173* | 
| -------- | Deprecation of the Internet Fibre Channel Protocol (iFCP) Address Translation Mode | 6172* | 
| -------- | The Lightweight Directory Access Protocol (LDAP) Don't Use Copy Control | 6171* | 
| -------- | Internet X.509 Public Key Infrastructure -- Certificate Image | 6170* | 
| -------- | A Registry for PIM Message Types | 6166* | 
| -------- | Extensions to IS-IS for Layer-2 Systems | 6165* | 
| -------- | Using 127-Bit IPv6 Prefixes on Inter-Router Links | 6164* | 
| -------- | Elliptic Curve Algorithms for Cryptographic Message Syntax (CMS) Asymmetric Key Package Content Type | 6162* | 
| -------- | Elliptic Curve Algorithms for Cryptographic Message Syntax (CMS) Encrypted Key Package Content Type | 6161* | 
| -------- | Algorithms for Cryptographic Message Syntax (CMS) Protection of Symmetric Key Package Content Types | 6160* | 
| -------- | IPv6 Transition in the Session Initiation Protocol (SIP) | 6157* | 
| -------- | Traversal Using Relays around NAT (TURN) Extension for IPv6 | 6156* | 
| -------- | Use of Device Identity in HTTP-Enabled Location Delivery (HELD) | 6155* | 
| -------- | IMAP LIST Extension for Special-Use Mailboxes | 6154* | 
| -------- | DHCPv4 and DHCPv6 Options for Access Network Discovery and Selection Function (ANDSF) Discovery | 6153* | 
| -------- | DHCPv4 Lease Query by Relay Agent Remote ID | 6148* | 
| -------- | DNS64: DNS Extensions for Network Address Translation from IPv6 Clients to IPv4 Servers | 6147* | 
| -------- | Stateful NAT64: Network Address and Protocol Translation from IPv6 Clients to IPv4 Servers | 6146* | 
| SIIT | IP/ICMP Translation Algorithm | 6145* | 
| -------- | Re-INVITE and Target-Refresh Request Handling in the Session Initiation Protocol (SIP) | 6141* | 
| -------- | Registration for Multiple Phone Numbers in the Session Initiation Protocol (SIP) | 6140* | 
| -------- | An Alternative Connection Model for the Message Session Relay Protocol (MSRP) | 6135* | 
| -------- | Sieve Extension: Externally Stored Lists | 6134* | 
| -------- | Sieve Notification Using Presence Information | 6132* | 
| -------- | Sieve Vacation Extension: "Seconds" Parameter | 6131* | 
| -------- | Mobile Ad Hoc Network (MANET) Neighborhood Discovery Protocol (NHDP) | 6130* | 
| -------- | RTP Control Protocol (RTCP) Port for Source-Specific Multicast (SSM) Sessions | 6128* | 
| -------- | Representation and Verification of Domain-Based Application Service Identity within Internet Public Key Infrastructure Using X.509 (PKIX) Certificates in the Context of Transport Layer Security (TLS) | 6125* | 
| -------- | Extensible Messaging and Presence Protocol (XMPP): Address Format | 6122* | 
| -------- | Extensible Messaging and Presence Protocol (XMPP): Instant Messaging and Presence | 6121* | 
| -------- | Extensible Messaging and Presence Protocol (XMPP): Core | 6120* | 
| -------- | IPv6 Traffic Engineering in IS-IS | 6119* | 
| -------- | Update of Legacy IANA Registrations of Enumservices | 6118* | 
| -------- | IANA Registration of Enumservices: Guide, Template, and IANA Considerations | 6117* | 
| -------- | The E.164 to Uniform Resource Identifiers (URI) Dynamic Delegation Discovery System (DDDS) Application (ENUM) | 6116* | 
| -------- | A Generalized Framework for Kerberos Pre-Authentication | 6113* | 
| -------- | Anonymity Support for Kerberos | 6112* | 
| -------- | Additional Kerberos Naming Constraints | 6111* | 
| -------- | Mapping YANG to Document Schema Definition Languages and Validating NETCONF Content | 6110* | 
| -------- | Procedures for Dynamically Signaled Hierarchical Label Switched Paths | 6107* | 
| -------- | IPv6 Router Advertisement Options for DNS Configuration | 6106* | 
| -------- | Stream Control Transmission Protocol (SCTP) Chunk Flags Registration | 6096* | 
| -------- | On the Implementation of the TCP Urgent Mechanism | 6093* | 
| -------- | Flow Bindings in Mobile IPv6 and Network Mobility (NEMO) Basic Support | 6089* | 
| -------- | Traffic Selectors for Flow Bindings | 6088* | 
| -------- | Session Initiation Protocol (SIP) INFO Method and Package Framework | 6086* | 
| -------- | Address Mapping of IPv6 Multicast Packets on Ethernet | 6085* | 
| -------- | Datagram Transport Layer Security (DTLS) for Stream Control Transmission Protocol (SCTP) | 6083* | 
| -------- | Teredo Extensions | 6081* | 
| -------- | A Framework for Session Initiation Protocol User Agent Profile Delivery | 6080* | 
| -------- | Basic Telephony SIP End-to-End Performance Metrics | 6076* | 
| -------- | The Internet Assigned Number Authority (IANA) Application Configuration Access Protocol (ACAP) Vendor Subtrees Registry | 6075* | 
| -------- | Provisioning, Auto-Discovery, and Signaling in Layer 2 Virtual Private Networks (L2VPNs) | 6074* | 
| -------- | Segmented Pseudowire | 6073* | 
| -------- | Certificate Management Service for the Session Initiation Protocol (SIP) | 6072* | 
| -------- | The 'mailto' URI Scheme | 6068* | 
| -------- | Transport Layer Security (TLS) Extensions: Extension Definitions | 6066* | 
| -------- | Using Authentication, Authorization, and Accounting Services to Dynamically Provision View-Based Access Control Model User-to-Group Mappings | 6065* | 
| -------- | Dynamic Symmetric Key Provisioning Protocol (DSKPP) | 6063* | 
| -------- | Traversal Using Relays around NAT (TURN) Extensions for TCP Allocations | 6062* | 
| -------- | Generalized Multiprotocol Label Switching (GMPLS) Control of Ethernet Provider Backbone Traffic Engineering (PBB-TE) | 6060* | 
| -------- | Simple Procedures for Detecting Network Attachment in IPv6 | 6059* | 
| -------- | Using Counter Modes with Encapsulating Security Payload (ESP) and Authentication Header (AH) to Protect Group Traffic | 6054* | 
| -------- | IPv6 Addressing of IPv4/IPv6 Translators | 6052* | 
| -------- | Rapid Synchronisation of RTP Flows | 6051* | 
| -------- | Spatial Composition of Metrics | 6049* | 
| -------- | Network News Transfer Protocol (NNTP) Additions to LIST Command | 6048* | 
| IMIP | iCalendar Message-Based Interoperability Protocol (iMIP) | 6047* | 
| -------- | Tunnelling of Explicit Congestion Notification | 6040* | 
| -------- | Two-Way Active Measurement Protocol (TWAMP) Reflect Octets and Symmetrical Size Features | 6038* | 
| -------- | Session Initiation Protocol Event Package for Voice Quality Reporting | 6035* | 
| -------- | Unicast-Prefix-Based IPv4 Multicast Addresses | 6034* | 
| -------- | Algorithms for Cryptographic Message Syntax (CMS) Encrypted Key Package Content Type | 6033* | 
| -------- | Cryptographic Message Syntax (CMS) Encrypted Key Package Content Type | 6032* | 
| -------- | Cryptographic Message Syntax (CMS) Symmetric Key Package Content Type | 6031* | 
| -------- | Portable Symmetric Key Container (PSKC) | 6030* | 
| -------- | Correct Transaction Handling for 2xx Responses to Session Initiation Protocol (SIP) INVITE Requests | 6026* | 
| -------- | YANG Module for NETCONF Monitoring | 6022* | 
| -------- | Common YANG Data Types | 6021* | 
| -------- | YANG - A Data Modeling Language for the Network Configuration Protocol (NETCONF) | 6020* | 
| -------- | BinaryTime: An Alternate Format for Representing Date and Time in ASN.1 | 6019* | 
| -------- | Support for the Resource Reservation Protocol (RSVP) in Layer 3 VPNs | 6016* | 
| -------- | RTP Payload Format for 1-D Interleaved Parity Forward Error Correction (FEC) | 6015* | 
| -------- | Cryptographic Algorithm Identifier Allocation for DNSSEC | 6014* | 
| -------- | Datagram Transport Layer Security (DTLS) Transport Mapping for Syslog | 6012* | 
| -------- | Cryptographic Message Syntax (CMS) Content Constraints Extension | 6010* | 
| -------- | Sieve Email Filtering: Delivery Status Notifications and Deliver-By Extensions | 6009* | 
| -------- | Authentication-Results Registration for Differentiating among Cryptographic Results | 6008* | 
| -------- | Extensions to the Path Computation Element Communication Protocol (PCEP) for Point-to-Multipoint Traffic Engineering Label Switched Paths | 6006* | 
| -------- | Generalized MPLS (GMPLS) Support for Metro Ethernet Forum and G.8011 User Network Interface (UNI) | 6005* | 
| -------- | Generalized MPLS (GMPLS) Support for Metro Ethernet Forum and G.8011 Ethernet Service Switching | 6004* | 
| -------- | Ethernet Traffic Parameters | 6003* | 
| -------- | Generalized MPLS (GMPLS) Data Channel Switching Capable (DCSC) and Channel Set Label Extensions | 6002* | 
| -------- | Generalized MPLS (GMPLS) Protocol Extensions for Multi-Layer and Multi-Region Networks (MLN/MRN) | 6001* | 
| -------- | An Extension for EAP-Only Authentication in IKEv2 | 5998* | 
| -------- | Internet Key Exchange Protocol Version 2 (IKEv2) | 5996* | 
| -------- | Using POST to Add Members to Web Distributed Authoring and Versioning (WebDAV) Collections | 5995* | 
| -------- | RTP Payload Format for Global System for Mobile Communications Half Rate (GSM-HR) | 5993* | 
| -------- | Teredo Security Updates | 5991* | 
| -------- | Use of the RSA-KEM Key Transport Algorithm in the Cryptographic Message Syntax (CMS) | 5990* | 
| -------- | A SIP Event Package for Subscribing to Changes to an HTTP Resource | 5989* | 
| -------- | Web Linking | 5988* | 
| -------- | Character Set and Language Encoding for Hypertext Transfer Protocol (HTTP) Header Field Parameters | 5987* | 
| -------- | Discovering the Local Location Information Server (LIS) | 5986* | 
| -------- | HTTP-Enabled Location Delivery (HELD) | 5985* | 
| -------- | DHCPv6 Options for Network Boot | 5970* | 
| -------- | IPv6 Rapid Deployment on IPv4 Infrastructures (6rd) -- Protocol Specification | 5969* | 
| -------- | DNS Transport over TCP - Implementation Requirements | 5966* | 
| -------- | An Extensible Format for Email Feedback Reports | 5965* | 
| -------- | Specifying Holes in Location-to-Service Translation (LoST) Service Boundaries | 5964* | 
| -------- | Dynamic Extensions to the Presence Information Data Format Location Object (PIDF-LO) | 5962* | 
| -------- | Improving TCP's Robustness to Blind In-Window Attacks | 5961* | 
| -------- | MPLS Transport Profile Data Plane Architecture | 5960* | 
| -------- | Algorithms for Asymmetric Key Package Content Type | 5959* | 
| -------- | Asymmetric Key Packages | 5958* | 
| -------- | Display-Based Address Sorting for the IMAP4 SORT Extension | 5957* | 
| -------- | Forward Error Correction Grouping Semantics in the Session Description Protocol | 5956* | 
| -------- | Essential Correction for IPv6 ABNF and URI Comparison in RFC 3261 | 5954* | 
| -------- | A Recommendation for IPv6 Address Text Representation | 5952* | 
| -------- | Network Management Requirements for MPLS-based Transport Networks | 5951* | 
| -------- | Fast Handovers for Proxy Mobile IPv6 | 5949* | 
| -------- | Transmission of IPv4 Packets over the IP Convergence Sublayer of IEEE 802.16 | 5948* | 
| -------- | Resource Reservation Protocol (RSVP) Extensions for Path-Triggered RSVP Receiver Proxy | 5946* | 
| MOBILEIPSUPIP | IP Mobility Support for IPv4, Revised | 5944* | 
| -------- | A Dedicated Routing Policy Specification Language Interface Identifier for Operational Testing | 5943* | 
| -------- | IPv6 Subnet Model: The Relationship between Links and Subnet Prefixes | 5942* | 
| -------- | Additional Cryptographic Message Syntax (CMS) Revocation Information Choices | 5940* | 
| -------- | Session Description Protocol (SDP) Capability Negotiation | 5939* | 
| -------- | Individual Session Control Feature for the Two-Way Active Measurement Protocol (TWAMP) | 5938* | 
| -------- | DNS Zone Transfer Protocol (AXFR) | 5936* | 
| -------- | Expressing SNMP SMI Datatypes in XML Schema Definition Language | 5935* | 
| -------- | Trust Anchor Management Protocol (TAMP) | 5934* | 
| -------- | Use of GOST Signature Algorithms in DNSKEY and RRSIG Resource Records for DNSSEC | 5933* | 
| -------- | Camellia Cipher Suites for TLS | 5932* | 
| -------- | Channel Bindings for TLS | 5929* | 
| -------- | Traversal Using Relays around NAT (TURN) Resolution Mechanism | 5928* | 
| -------- | Cryptographic Algorithms for the TCP Authentication Option (TCP-AO) | 5926* | 
| -------- | The TCP Authentication Option | 5925* | 
| -------- | Connection Reuse in the Session Initiation Protocol (SIP) | 5923* | 
| -------- | Domain Certificates in the Session Initiation Protocol (SIP) | 5922* | 
| -------- | Signaling LDP Label Advertisement Completion | 5919* | 
| -------- | Label Distribution Protocol (LDP) 'Typed Wildcard' Forward Equivalence Class (FEC) | 5918* | 
| -------- | Trust Anchor Format | 5914* | 
| -------- | Clearance Attribute and Authority Clearance Constraints Certificate Extension | 5913* | 
| -------- | Domain Name System (DNS) Security Extensions Mapping for the Extensible Provisioning Protocol (EPP) | 5910* | 
| -------- | Network Time Protocol (NTP) Server Option for DHCPv6 | 5908* | 
| -------- | Definitions of Managed Objects for Network Time Protocol Version 4 (NTPv4) | 5907* | 
| -------- | Network Time Protocol Version 4: Protocol and Algorithms Specification | 5905* | 
| -------- | Extensions to the IODEF-Document Class for Reporting Phishing | 5901* | 
| -------- | Connectivity Preconditions for Session Description Protocol (SDP) Media Streams | 5898* | 
| -------- | Generic Security Service Application Program Interface (GSS-API): Delegate if Approved by Policy | 5896* | 
| -------- | Right-to-Left Scripts for Internationalized Domain Names for Applications (IDNA) | 5893* | 
| -------- | The Unicode Code Points and Internationalized Domain Names for Applications (IDNA) | 5892* | 
| -------- | Internationalized Domain Names in Applications (IDNA): Protocol | 5891* | 
| -------- | Internationalized Domain Names for Applications (IDNA): Definitions and Document Framework | 5890* | 
| -------- | The Session Description Protocol (SDP) Grouping Framework | 5888* | 
| -------- | A Set of Monitoring Tools for Path Computation Element (PCE)-Based Architecture | 5886* | 
| -------- | Bidirectional Forwarding Detection (BFD) for the Pseudowire Virtual Circuit Connectivity Verification (VCCV) | 5885* | 
| -------- | Bidirectional Forwarding Detection (BFD) for MPLS Label Switched Paths (LSPs) | 5884* | 
| -------- | Bidirectional Forwarding Detection (BFD) for Multihop Paths | 5883* | 
| -------- | Generic Application of Bidirectional Forwarding Detection (BFD) | 5882* | 
| -------- | Bidirectional Forwarding Detection (BFD) for IPv4 and IPv6 (Single Hop) | 5881* | 
| -------- | Bidirectional Forwarding Detection (BFD) | 5880* | 
| -------- | An Extensible Markup Language (XML) Configuration Access Protocol (XCAP) Diff Event Package | 5875* | 
| -------- | An Extensible Markup Language (XML) Document Format for Indicating a Change in XML Configuration Access Protocol (XCAP) Resources | 5874* | 
| -------- | IANA Rules for the Protocol for Carrying Authentication for Network Access (PANA) | 5872* | 
| -------- | IANA Allocation Guidelines for the IPv6 Routing Header | 5871* | 
| -------- | A Uniform Resource Identifier for Geographic Locations ('geo' URI) | 5870* | 
| -------- | Diameter Quality-of-Service Application | 5866* | 
| -------- | A Differentiated Services Code Point (DSCP) for Capacity-Admitted Traffic | 5865* | 
| -------- | DNS SRV Resource Records for AFS | 5864* | 
| -------- | Requirements for Operations, Administration, and Maintenance (OAM) in MPLS Transport Networks | 5860* | 
| -------- | IPsec Extensions to Support Robust Header Compression over IPsec | 5858* | 
| -------- | IKEv2 Extensions to Support Robust Header Compression over IPsec | 5857* | 
| -------- | The Metalink Download Description Format | 5854* | 
| -------- | RSVP-TE Signaling Extension for LSP Handover from the Management Plane to the Control Plane in a GMPLS-Enabled Transport Network | 5852* | 
| -------- | Signed Syslog Messages | 5848* | 
| -------- | Heartbeat Mechanism for Proxy Mobile IPv6 | 5847* | 
| -------- | Binding Revocation for IPv6 Mobility | 5846* | 
| -------- | Generic Routing Encapsulation (GRE) Key Option for Proxy Mobile IPv6 | 5845* | 
| -------- | IPv4 Support for Proxy Mobile IPv6 | 5844* | 
| -------- | Wrapped Encapsulating Security Payload (ESP) for Traffic Visibility | 5840* | 
| -------- | An Extension to Session Initiation Protocol (SIP) Events for Conditional Event Notification | 5839* | 
| -------- | Support of Address Families in OSPFv3 | 5838* | 
| -------- | Extending ICMP for Interface and Next-Hop Identification | 5837* | 
| -------- | IMAP4 Extension for Returning STATUS Information in Extended LIST | 5819* | 
| -------- | Data Channel Status Confirmation Extensions for the Link Management Protocol | 5818* | 
| -------- | ESSCertIDv2 Update for RFC 3161 | 5816* | 
| -------- | Definitions of Managed Objects for IP Flow Information Export | 5815* | 
| -------- | Label Switched Path (LSP) Dynamic Provisioning Performance Metrics in Generalized MPLS Networks | 5814* | 
| -------- | Forwarding and Control Element Separation (ForCES) MIB | 5813* | 
| -------- | Forwarding and Control Element Separation (ForCES) Forwarding Element Model | 5812* | 
| -------- | SCTP-Based Transport Mapping Layer (TML) for the Forwarding and Control Element Separation (ForCES) Protocol | 5811* | 
| -------- | Forwarding and Control Element Separation (ForCES) Protocol Specification | 5810* | 
| -------- | Definition of Master Key between PANA Client and Enforcement Point | 5807* | 
| -------- | A Protocol for Remotely Managing Sieve Scripts | 5804* | 
| -------- | Salted Challenge Response Authentication Mechanism (SCRAM) SASL and GSS-API Mechanisms | 5802* | 
| -------- | Using Generic Security Service Application Program Interface (GSS-API) Mechanisms in Simple Authentication and Security Layer (SASL): The GS2 Mechanism Family | 5801* | 
| -------- | Virtual Router Redundancy Protocol (VRRP) Version 3 for IPv4 and IPv6 | 5798* | 
| -------- | FTP Command and Extension Registry | 5797* | 
| -------- | Authentication and Confidentiality in Protocol Independent Multicast Sparse Mode (PIM-SM) Link-Local Messages | 5796* | 
| -------- | The RObust Header Compression (ROHC) Framework | 5795* | 
| -------- | PB-TNC: A Posture Broker (PB) Protocol Compatible with Trusted Network Connect (TNC) | 5793* | 
| -------- | PA-TNC: A Posture Attribute (PA) Protocol Compatible with Trusted Network Connect (TNC) | 5792* | 
| -------- | Lightweight Internet Group Management Protocol Version 3 (IGMPv3) and Multicast Listener Discovery Version 2 (MLDv2) Protocols | 5790* | 
| -------- | PATCH Method for HTTP | 5789* | 
| -------- | IMAP4 Keyword Registry | 5788* | 
| -------- | Advertising a Router's Local Addresses in OSPF Traffic Engineering (TE) Extensions | 5786* | 
| -------- | Defining Well-Known Uniform Resource Identifiers (URIs) | 5785* | 
| -------- | Sieve Email Filtering:  Sieves and Display Directives in XML | 5784* | 
| -------- | Diameter Proxy Mobile IPv6: Mobile Access Gateway and Local Mobility Anchor Interaction with Diameter Server | 5779* | 
| -------- | Diameter Mobile IPv6: Support for Home Agent to Diameter Server Interaction | 5778* | 
| -------- | Traffic Classification and Quality of Service (QoS) Attributes for Diameter | 5777* | 
| -------- | Asynchronous Layered Coding (ALC) Protocol Instantiation | 5775* | 
| -------- | Indicating Support for Interactive Connectivity Establishment (ICE) in the Session Initiation Protocol (SIP) | 5768* | 
| -------- | Traversal Using Relays around NAT (TURN): Relay Extensions to Session Traversal Utilities for NAT (STUN) | 5766* | 
| -------- | Datagram Transport Layer Security (DTLS) Extension to Establish Keys for the Secure Real-time Transport Protocol (SRTP) | 5764* | 
| -------- | Framework for Establishing a Secure Real-time Transport Protocol (SRTP) Security Context Using Datagram Transport Layer Security (DTLS) | 5763* | 
| -------- | RTP and the Datagram Congestion Control Protocol (DCCP) | 5762* | 
| -------- | Multiplexing RTP Data and Control Packets on a Single Port | 5761* | 
| -------- | RTP Control Protocol (RTCP) Extensions for Single-Source Multicast Sessions with Unicast Feedback | 5760* | 
| -------- | Internet X.509 Public Key Infrastructure: Additional Algorithms and Identifiers for DSA and ECDSA | 5758* | 
| -------- | Updates for RSAES-OAEP and RSASSA-PSS Algorithm Parameters | 5756* | 
| -------- | An Internet Attribute Certificate Profile for Authorization | 5755* | 
| -------- | Using SHA2 Algorithms with Cryptographic Message Syntax | 5754* | 
| -------- | Multiple Signatures in Cryptographic Message Syntax (CMS) | 5752* | 
| -------- | Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 3.2 Message Specification | 5751* | 
| -------- | Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 3.2 Certificate Handling | 5750* | 
| -------- | Distribution of EAP-Based Keys for Handover and Re-Authentication | 5749* | 
| -------- | Transport Layer Security (TLS) Renegotiation Indication Extension | 5746* | 
| -------- | NACK-Oriented Reliable Multicast (NORM) Transport Protocol | 5740* | 
| -------- | Clarifications on the Routing of Diameter Requests Based on the Username and the Realm | 5729* | 
| -------- | Post-Repair Loss RLE Report Block Type for RTP Control Protocol (RTCP) Extended Reports (XRs) | 5725* | 
| -------- | URI Scheme for Global System for Mobile Communications (GSM) Short Message Service (SMS) | 5724* | 
| -------- | Internet Key Exchange Protocol Version 2 (IKEv2) Session Resumption | 5723* | 
| -------- | Handling of Overlapping IPv6 Fragments | 5722* | 
| -------- | Updated IANA Considerations for Diameter Command Code Allocations | 5719* | 
| -------- | An In-Band Data Communication Network For the MPLS Transport Profile | 5718* | 
| -------- | Partial Lock Remote Procedure Call (RPC) for NETCONF | 5717* | 
| -------- | MPLS Traffic Engineering Soft Preemption | 5712* | 
| -------- | Node Behavior upon Originating and Receiving Resource Reservation Protocol (RSVP) Path Error Messages | 5711* | 
| -------- | PathErr Message Triggered MPLS and GMPLS LSP Reroutes | 5710* | 
| -------- | OSPFv2 HMAC-SHA Cryptographic Authentication | 5709* | 
| -------- | Keying Material Exporters for Transport Layer Security (TLS) | 5705* | 
| -------- | Sieve Email Filtering: MIME Part Tests, Iteration, Extraction, Replacement, and Enclosure | 5703* | 
| -------- | Use of SHA-2 Algorithms with RSA in DNSKEY and RRSIG Resource Records for DNSSEC | 5702* | 
| -------- | IPv6 Address Specific BGP Extended Community Attribute | 5701* | 
| -------- | Data Structure for the Security Suitability of Cryptographic Algorithms (DSSC) | 5698* | 
| -------- | Baseline Encoding and Transport of Pre-Congestion Information | 5696* | 
| -------- | Transmission of IP over Ethernet over IEEE 802.16 Networks | 5692* | 
| -------- | RTP Payload Format for Elementary Streams with MPEG Surround Multi-Channel Audio | 5691* | 
| -------- | Extended MKCOL for Web Distributed Authoring and Versioning (WebDAV) | 5689* | 
| -------- | A Session Initiation Protocol (SIP) Media Feature Tag for MIME Application Subtypes | 5688* | 
| -------- | RTP Payload Format for mU-law EMbedded Codec for Low-delay IP Communication (UEMCLIP) Speech Codec | 5686* | 
| -------- | Redirect Mechanism for the Internet Key Exchange Protocol Version 2 (IKEv2) | 5685* | 
| -------- | Forward RTO-Recovery (F-RTO): An Algorithm for Detecting Spurious Retransmission Timeouts with TCP | 5682* | 
| -------- | Locating IEEE 802.21 Mobility Services Using DNS | 5679* | 
| -------- | Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) Options for IEEE 802.21 Mobility Services (MoS) Discovery | 5678* | 
| -------- | IEEE 802.21 Mobility Services Framework Design (MSFD) | 5677* | 
| -------- | Definitions of Managed Objects for Mapping SYSLOG Messages to Simple Network Management Protocol (SNMP) Notifications | 5676* | 
| -------- | Mapping Simple Network Management Protocol (SNMP) Notifications to SYSLOG Messages | 5675* | 
| -------- | Alarms in Syslog | 5674* | 
| -------- | Metering and Marking Behaviour of PCN-Nodes | 5670* | 
| -------- | The SEED Cipher Algorithm and Its Use with the Secure Real-Time Transport Protocol (SRTP) | 5669* | 
| -------- | 4-Octet AS Specific BGP Extended Community | 5668* | 
| -------- | Network File System (NFS) Direct Data Placement | 5667* | 
| -------- | Remote Direct Memory Access Transport for Remote Procedure Call | 5666* | 
| -------- | IANA Considerations for Remote Procedure Call (RPC) Network Identifiers and Universal Address Formats | 5665* | 
| -------- | Object-Based Parallel NFS (pNFS) Operations | 5664* | 
| -------- | Parallel NFS (pNFS) Block/Volume Layout | 5663* | 
| -------- | Network File System (NFS) Version 4 Minor Version 1 External Data Representation Standard (XDR) Description | 5662* | 
| -------- | Network File System (NFS) Version 4 Minor Version 1 Protocol | 5661* | 
| -------- | IPsec Channels: Connection Latching | 5660* | 
| -------- | Addressing Record-Route Issues in the Session Initiation Protocol (SIP) | 5658* | 
| -------- | Elliptic Curve Algorithm Integration in the Secure Shell Transport Layer | 5656* | 
| -------- | Specification of the IP Flow Information Export (IPFIX) File Format | 5655* | 
| -------- | Requirements of an MPLS Transport Profile | 5654* | 
| -------- | Generic Security Service API Version 2: Java Bindings Update | 5653* | 
| -------- | Layered Coding Transport (LCT) Building Block | 5651* | 
| -------- | Definitions of Managed Objects for Very High Speed Digital Subscriber Line 2 (VDSL2) | 5650* | 
| -------- | Multiple Care-of Addresses Registration | 5648* | 
| -------- | IP Performance Metrics (IPPM): Spatial and Multicast | 5644* | 
| -------- | Management Information Base for OSPFv3 | 5643* | 
| -------- | Dynamic Hostname Exchange Mechanism for OSPF | 5642* | 
| -------- | Layer 2 Tunneling Protocol Version 3 (L2TPv3) Extended Circuit Status Values | 5641* | 
| -------- | Load-Balancing for Mesh Softwires | 5640* | 
| -------- | The Use of the SIPS URI Scheme in the Session Initiation Protocol (SIP) | 5630* | 
| -------- | A Framework for Application Interaction in the Session Initiation Protocol (SIP) | 5629* | 
| -------- | Registration Event Package Extension for Session Initiation Protocol (SIP) Globally Routable User Agent URIs (GRUUs) | 5628* | 
| -------- | Obtaining and Using Globally Routable User Agent URIs (GRUUs) in the Session Initiation Protocol (SIP) | 5627* | 
| -------- | Managing Client-Initiated Connections in the Session Initiation Protocol (SIP) | 5626* | 
| -------- | Quality of Service Parameters for Usage with Diameter | 5624* | 
| -------- | Message Body Handling in the Session Initiation Protocol (SIP) | 5621* | 
| -------- | Softwire Security Analysis and Requirements | 5619* | 
| -------- | Mixed Security Mode for the Two-Way Active Measurement Protocol (TWAMP) | 5618* | 
| -------- | DomainKeys Identified Mail (DKIM) Author Domain Signing Practices (ADSP) | 5617* | 
| -------- | OSPF Link-Local Signaling | 5613* | 
| -------- | Layer Two Tunneling Protocol version 3 - Setup of Time-Division Multiplexing (TDM) Pseudowires | 5611* | 
| -------- | Exporting Type Information for IP Flow Information Export (IPFIX) Information Elements | 5610* | 
| -------- | Remote Authentication Dial-In User Service (RADIUS) Usage for Simple Network Management Protocol (SNMP) Transport Models | 5608* | 
| -------- | Remote Authentication Dial-In User Service (RADIUS) Authorization for Network Access Server (NAS) Management | 5607* | 
| -------- | Managed Objects for ATM over Packet Switched Networks (PSNs) | 5605* | 
| -------- | Managed Objects for Time Division Multiplexing (TDM) over Packet Switched Networks (PSNs) | 5604* | 
| -------- | Ethernet Pseudowire (PW) Management Information Base (MIB) | 5603* | 
| -------- | Pseudowire (PW) over MPLS PSN Management Information Base (MIB) | 5602* | 
| -------- | Pseudowire (PW) Management Information Base (MIB) | 5601* | 
| -------- | Datagram Congestion Control Protocol (DCCP) Simultaneous-Open Technique to Facilitate NAT/Middlebox Traversal | 5596* | 
| -------- | The Datagram Congestion Control Protocol (DCCP) Service Codes | 5595* | 
| -------- | Internet Message Access Protocol (IMAP) - URL Access Identifier Extension | 5593* | 
| -------- | Secure Shell Transport Model for the Simple Network Management Protocol (SNMP) | 5592* | 
| -------- | Generic Security Service Application Program Interface (GSS-API) Extension for Storing Delegated Credentials | 5588* | 
| -------- | Extended Generic Security Service Mechanism Inquiry APIs | 5587* | 
| -------- | MPLS Generic Associated Channel | 5586* | 
| -------- | RTP Payload Format for the Adaptive TRansform Acoustic Coding (ATRAC) Family | 5584* | 
| -------- | Signaling Media Decoding Dependency in the Session Description Protocol (SDP) | 5583* | 
| -------- | Carrying Location Objects in RADIUS and Diameter | 5580* | 
| -------- | RTP Payload Format for ITU-T Recommendation G.722.1 | 5577* | 
| -------- | Source-Specific Media Attributes in the Session Description Protocol (SDP) | 5576* | 
| -------- | Dissemination of Flow Specification Rules | 5575* | 
| -------- | RTP Payload Format for the Speex Codec | 5574* | 
| -------- | Softwire Hub and Spoke Deployment Framework with Layer Two Tunneling Protocol Version 2 (L2TPv2) | 5571* | 
| -------- | Mobile IPv6 Fast Handovers | 5568* | 
| -------- | BGP IPsec Tunnel Encapsulation Attribute | 5566* | 
| -------- | Softwire Mesh Framework | 5565* | 
| -------- | LDP Capabilities | 5561* | 
| -------- | A One-Way Packet Duplication Metric | 5560* | 
| -------- | Path Computation Element Communication Protocol (PCEP) Requirements and Protocol Extensions in Support of Global Concurrent Optimization | 5557* | 
| -------- | Mobile IPv6 Support for Dual Stack Hosts and Routers | 5555* | 
| -------- | Clarifications and Extensions to the Generic Security Service Application Program Interface (GSS-API) for the Use of Channel Bindings | 5554* | 
| -------- | Resource Reservation Protocol (RSVP) Extensions for Path Key Support | 5553* | 
| -------- | SIP Interface to VoiceXML Media Services | 5552* | 
| -------- | The Internet Email to Support Diverse Service Environments (Lemonade) Profile | 5550* | 
| -------- | Advertising IPv4 Network Layer Reachability Information with an IPv6 Next Hop | 5549* | 
| -------- | A Session Description Protocol (SDP) Offer/Answer Mechanism to Enable File Transfer | 5547* | 
| -------- | iCalendar Transport-Independent Interoperability Protocol (iTIP) | 5546* | 
| -------- | Internet Calendaring and Scheduling Core Object Specification (iCalendar) | 5545* | 
| -------- | BGP Traffic Engineering Attribute | 5543* | 
| -------- | Definitions of Textual Conventions for Pseudowire (PW) Management | 5542* | 
| -------- | Encoding of Objective Functions in the Path Computation Element Communication Protocol (PCEP) | 5541* | 
| -------- | NETCONF over Transport Layer Security (TLS) | 5539* | 
| -------- | The 'news' and 'nntp' URI Schemes | 5538* | 
| -------- | Netnews Architecture and Protocols | 5537* | 
| -------- | Netnews Article Format | 5536* | 
| -------- | Hash-Based Addresses (HBA) | 5535* | 
| -------- | Failure Detection and Locator Pair Exploration Protocol for IPv6 Multihoming | 5534* | 
| -------- | Shim6: Level 3 Multihoming Shim Protocol for IPv6 | 5533* | 
| -------- | IMAP Response Codes | 5530* | 
| -------- | Modes of Operation for Camellia for Use with IPsec | 5529* | 
| -------- | Extended URLFETCH for Binary and Converted Parts | 5524* | 
| -------- | Extensions to the Path Computation Element Communication Protocol (PCEP) for Route Exclusions | 5521* | 
| -------- | Preserving Topology Confidentiality in Inter-Domain Path Computation Using a Path-Key-Based Mechanism | 5520* | 
| -------- | Multicast Group Membership Discovery MIB | 5519* | 
| -------- | Vouch By Reference | 5518* | 
| -------- | The BGP Encapsulation Subsequent Address Family Identifier (SAFI) and the BGP Tunnel Encapsulation Attribute | 5512* | 
| -------- | Routing Backus-Naur Form (RBNF): A Syntax Used to Form Encoding Rules in Various Routing Protocol Specifications | 5511* | 
| -------- | Reed-Solomon Forward Error Correction (FEC) Schemes | 5510* | 
| -------- | Internet Assigned Numbers Authority (IANA) Registration of Instant Messaging and Presence DNS SRV RRs for the Session Initiation Protocol (SIP) | 5509* | 
| -------- | Support for Reduced-Size Real-Time Transport Control Protocol (RTCP): Opportunities and Consequences | 5506* | 
| -------- | IANA Allocations for Mobile Ad Hoc Network (MANET) Protocols | 5498* | 
| -------- | Representing Multi-Value Time in Mobile Ad Hoc Networks (MANETs) | 5497* | 
| -------- | The Reverse Path Forwarding (RPF) Vector TLV | 5496* | 
| -------- | IANA Allocation Guidelines for the Address Resolution Protocol (ARP) | 5494* | 
| -------- | GEOPRIV Presence Information Data Format Location Object (PIDF-LO) Usage Clarification, Considerations, and Recommendations | 5491* | 
| -------- | The Sieve Mail-Filtering Language -- Extensions for Checking Mailbox Status and Accessing Mailbox Metadata | 5490* | 
| -------- | Network Mobility (NEMO) Management Information Base | 5488* | 
| -------- | Pre-Shared Key Cipher Suites for TLS with SHA-256/384 and AES Galois Counter Mode | 5487* | 
| -------- | Associating Time-Codes with RTP Streams | 5484* | 
| -------- | TCP User Timeout Option | 5482* | 
| -------- | Elliptic Curve Cryptography Subject Public Key Information | 5480* | 
| -------- | IANA Registration of New Session Initiation Protocol (SIP) Resource-Priority Namespaces | 5478* | 
| -------- | Information Model for Packet Sampling Exports | 5477* | 
| -------- | Packet Sampling (PSAMP) Protocol Specifications | 5476* | 
| -------- | Sampling and Filtering Techniques for IP Packet Selection | 5475* | 
| -------- | IMAP4 Extension for Named Searches (Filters) | 5466* | 
| -------- | The IMAP NOTIFY Extension | 5465* | 
| -------- | The IMAP METADATA Extension | 5464* | 
| -------- | Sieve Email Filtering:  Ihave Extension | 5463* | 
| -------- | Multiprotocol Label Switching (MPLS) Label Stack Entry: "EXP" Field Renamed to "Traffic Class" Field | 5462* | 
| -------- | DHCPv6 Bulk Leasequery | 5460* | 
| -------- | G.729.1 RTP Payload Format Update: Discontinuous Transmission (DTX) Support | 5459* | 
| -------- | Diffserv-Aware Class-Type Object for the Path Computation Element Communication Protocol | 5455* | 
| -------- | Dual-Stack Mobile IPv4 | 5454* | 
| -------- | Reserved IPv6 Interface Identifiers | 5453* | 
| -------- | Measures for Making DNS More Resilient against Forged Answers | 5452* | 
| -------- | Message Header Field for Indicating Message Authentication Status | 5451* | 
| -------- | Transmission Time Offsets in RTP Streams | 5450* | 
| -------- | Diameter Mobile IPv6: Support for Network Access Server to Diameter Server Interaction | 5447* | 
| -------- | Basic Forward Error Correction (FEC) Schemes | 5445* | 
| -------- | Generalized Mobile Ad Hoc Network (MANET) Packet/Message Format | 5444* | 
| -------- | A Backward-Recursive PCE-Based Computation (BRPC) Procedure to Compute Shortest Constrained Inter-Domain Traffic Engineering Label Switched Paths | 5441* | 
| -------- | Path Computation Element (PCE) Communication Protocol (PCEP) | 5440* | 
| -------- | Instant Message Disposition Notification (IMDN) | 5438* | 
| -------- | Sieve Notification Mechanism: Extensible Messaging and Presence Protocol (XMPP) | 5437* | 
| -------- | Sieve Notification Mechanism: mailto | 5436* | 
| -------- | Sieve Email Filtering: Extension for Notifications | 5435* | 
| -------- | Extensible Authentication Protocol - Generalized Pre-Shared Key (EAP-GPSK) Method | 5433* | 
| -------- | Quality of Service (QoS) Mechanism Selection in the Session Description Protocol (SDP) | 5432* | 
| -------- | Sieve Email Filtering: Reject and Extended Reject Extensions | 5429* | 
| -------- | Management Event Management Information Base (MIB) for PacketCable- and IPCablecom-Compliant Devices | 5428* | 
| -------- | Textual Conventions for Syslog Management | 5427* | 
| -------- | Transmission of Syslog Messages over UDP | 5426* | 
| -------- | Transport Layer Security (TLS) Transport Mapping for Syslog | 5425* | 
| -------- | The Syslog Protocol | 5424* | 
| -------- | Internet Message Store Events | 5423* | 
| -------- | Encoding of Attributes for MPLS LSP Establishment Using Resource Reservation Protocol Traffic Engineering (RSVP-TE) | 5420* | 
| -------- | Control And Provisioning of Wireless Access Points (CAPWAP) Access Controller DHCP Option | 5417* | 
| -------- | Control and Provisioning of Wireless Access Points (CAPWAP) Protocol Binding for IEEE 802.11 | 5416* | 
| -------- | Control And Provisioning of Wireless Access Points (CAPWAP) Protocol Specification | 5415* | 
| -------- | RTP Payload Format for G.719 | 5404* | 
| -------- | RPCSEC_GSS Version 2 | 5403* | 
| -------- | Multicast Negative-Acknowledgment (NACK) Building Blocks | 5401* | 
| -------- | WebDAV Current Principal Extension | 5397* | 
| -------- | Textual Representation of Autonomous System (AS) Numbers | 5396* | 
| -------- | Addressing an Amplification Vulnerability in Session Initiation Protocol (SIP) Forking Proxies | 5393* | 
| -------- | OSPF Extensions in Support of Inter-Autonomous System (AS) MPLS and GMPLS Traffic Engineering | 5392* | 
| -------- | RTP Payload Format for ITU-T Recommendation G.711.1 | 5391* | 
| -------- | Session Traversal Utilities for NAT (STUN) | 5389* | 
| -------- | Information Model and XML Data Model for Traceroute Measurements | 5388* | 
| -------- | Better-Than-Nothing Security: An Unauthenticated Mode of IPsec | 5386* | 
| -------- | The Protocol Independent Multicast (PIM) Join Attribute Format | 5384* | 
| -------- | Hierarchical Mobile IPv6 (HMIPv6) Mobility Management | 5380* | 
| -------- | Multicast Extensions to the Security Architecture for the Internet Protocol | 5374* | 
| -------- | Requesting Answering Modes for the Session Initiation Protocol (SIP) | 5373* | 
| -------- | Payload Format for JPEG 2000 Video: Extensions for Scalability and Main Header Recovery | 5372* | 
| -------- | RTP Payload Format for JPEG 2000 Video Streams | 5371* | 
| -------- | The Session Initiation Protocol (SIP) Conference Bridge Transcoding Model | 5370* | 
| -------- | Referring to Multiple Resources in the Session Initiation Protocol (SIP) | 5368* | 
| -------- | Subscriptions to Request-Contained Resource Lists in the Session Initiation Protocol (SIP) | 5367* | 
| -------- | Conference Establishment Using Request-Contained Lists in the Session Initiation Protocol (SIP) | 5366* | 
| -------- | Multiple-Recipient MESSAGE Requests in the Session Initiation Protocol (SIP) | 5365* | 
| -------- | Extensible Markup Language (XML) Format Extension for Representing Copy Control Attributes in Resource Lists | 5364* | 
| -------- | Framework and Security Considerations for Session Initiation Protocol (SIP) URI-List Services | 5363* | 
| -------- | The Session Initiation Protocol (SIP) Pending Additions Event Package | 5362* | 
| -------- | A Document Format for Requesting Consent | 5361* | 
| -------- | A Framework for Consent-Based Communications in the Session Initiation Protocol (SIP) | 5360* | 
| -------- | A Two-Way Active Measurement Protocol (TWAMP) | 5357* | 
| -------- | IANA Considerations for the IPv4 and IPv6 Router Alert Options | 5350* | 
| -------- | TCP Friendly Rate Control (TFRC): Protocol Specification | 5348* | 
| -------- | The Internet Assigned Number Authority (IANA) tel Uniform Resource Identifier (URI) Parameter Registry | 5341* | 
| -------- | OSPF for IPv6 | 5340* | 
| -------- | Ogg Media Types | 5334* | 
| -------- | IANA Registration of Enumservices for Internet Calendaring | 5333* | 
| -------- | MPLS Multicast Encapsulations | 5332* | 
| -------- | MPLS Upstream Label Assignment and Context-Specific Label Space | 5331* | 
| -------- | A Link-Type sub-TLV to Convey the Number of Traffic Engineering Label Switched Paths Signalled with Zero Reserved Bandwidth across a Link | 5330* | 
| -------- | Traffic Engineering Extensions to OSPF Version 3 | 5329* | 
| -------- | MIB for Fibre-Channel Security Protocols (FC-SP) | 5324* | 
| -------- | Web Distributed Authoring and Versioning (WebDAV) SEARCH | 5323* | 
| -------- | ISIS Extensions in Support of Inter-Autonomous System (AS) MPLS and GMPLS Traffic Engineering | 5316* | 
| -------- | Simplified Extension of Link State PDU (LSP) Space for IS-IS | 5311* | 
| -------- | IS-IS Generic Cryptographic Authentication | 5310* | 
| -------- | Routing IPv6 with IS-IS | 5308* | 
| -------- | IS-IS Extensions in Support of Generalized Multi-Protocol Label Switching (GMPLS) | 5307* | 
| -------- | Restart Signaling for IS-IS | 5306* | 
| -------- | IS-IS Extensions for Traffic Engineering | 5305* | 
| -------- | IS-IS Cryptographic Authentication | 5304* | 
| -------- | Three-Way Handshake for IS-IS Point-to-Point Adjacencies | 5303* | 
| -------- | Domain-Wide Prefix Distribution with Two-Level IS-IS | 5302* | 
| -------- | Dynamic Hostname Exchange Mechanism for IS-IS | 5301* | 
| -------- | EAP Extensions for EAP Re-authentication Protocol (ERP) | 5296* | 
| -------- | Specification for the Derivation of Root Keys from an Extended Master Session Key (EMSK) | 5295* | 
| -------- | Sieve Email Filtering: Editheader Extension | 5293* | 
| -------- | Address-Prefix-Based Outbound Route Filter for BGP-4 | 5292* | 
| -------- | Outbound Route Filtering Capability for BGP-4 | 5291* | 
| -------- | AES Galois Counter Mode (GCM) Cipher Suites for TLS | 5288* | 
| -------- | Control Protocol Extensions for the Setup of Time-Division Multiplexing (TDM) Pseudowires in MPLS Networks | 5287* | 
| -------- | Basic Specification for IP Fast Reroute: Loop-Free Alternates | 5286* | 
| -------- | A General Mechanism for RTP Header Extensions | 5285* | 
| -------- | User-Defined Errors for RSVP | 5284* | 
| -------- | LDP Extension for Inter-Area Label Switched Paths (LSPs) | 5283* | 
| -------- | Using Authenticated Encryption Algorithms with the Encrypted Payload of the Internet Key Exchange version 2 (IKEv2) Protocol | 5282* | 
| -------- | Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile | 5280* | 
| -------- | IANA Registration of Enumservices for Voice and Video Messaging | 5278* | 
| -------- | NETCONF Event Notifications | 5277* | 
| -------- | Using the Server-Based Certificate Validation Protocol (SCVP) to Convey Long-Term Evidence Records | 5276* | 
| -------- | CMS Symmetric Key Management and Distribution | 5275* | 
| -------- | Certificate Management Messages over CMS (CMC): Compliance Requirements | 5274* | 
| -------- | Certificate Management over CMS (CMC): Transport Protocols | 5273* | 
| -------- | Certificate Management over CMS (CMC) | 5272* | 
| -------- | Distributing a Symmetric Fast Mobile IPv6 (FMIPv6) Handover Key Using SEcure Neighbor Discovery (SEND) | 5269* | 
| -------- | Contexts for IMAP4 | 5267* | 
| -------- | Mobile IPv4 Traversal across IPsec-Based VPN Gateways | 5265* | 
| -------- | Publication of Partial Presence Information | 5264* | 
| -------- | Session Initiation Protocol (SIP) Extension for Partial Notification of Presence Information | 5263* | 
| -------- | Presence Information Data Format (PIDF) Extension for Partial Presence | 5262* | 
| -------- | An Extensible Markup Language (XML) Patch Operations Framework Utilizing XML Path Language (XPath) Selectors | 5261* | 
| -------- | Sieve Email Filtering: Date and Index Extensions | 5260* | 
| -------- | Internet Message Access Protocol - CONVERT Extension | 5259* | 
| -------- | Internet Message Access Protocol version 4 - LIST Command Extensions | 5258* | 
| -------- | Internet Message Access Protocol - SORT and THREAD Extensions | 5256* | 
| -------- | Internet Message Access Protocol Internationalization | 5255* | 
| -------- | OSPF-Based Layer 1 VPN Auto-Discovery | 5252* | 
| -------- | Layer 1 VPN Basic Mode | 5251* | 
| OSPF-LSA | The OSPF Opaque LSA Option | 5250* | 
| -------- | Extensible Authentication Protocol (EAP) Key Management Framework | 5247* | 
| -------- | The Transport Layer Security (TLS) Protocol Version 1.2 | 5246* | 
| -------- | Interactive Connectivity Establishment (ICE): A Protocol for Network Address Translator (NAT) Traversal for Offer/Answer Protocols | 5245* | 
| -------- | Definition of Events for Channel-Oriented Telephony Signalling | 5244* | 
| -------- | Protocol Independent Multicast (PIM) Bootstrap Router MIB | 5240* | 
| -------- | A Framework for Centralized Conferencing | 5239* | 
| -------- | Datagram Transport Layer Security (DTLS) over the Datagram Congestion Control Protocol (DCCP) | 5238* | 
| -------- | Sieve Email Filtering: Spamtest and Virustest Extensions | 5235* | 
| -------- | Sieve Email Filtering: Subaddress Extension | 5233* | 
| -------- | Sieve Email Filtering: Imap4flags Extension | 5232* | 
| -------- | Sieve Email Filtering: Relational Extension | 5231* | 
| -------- | Sieve Email Filtering: Vacation Extension | 5230* | 
| -------- | Sieve Email Filtering: Variables Extension | 5229* | 
| -------- | Sieve: An Email Filtering Language | 5228* | 
| -------- | IPv4 Address Conflict Detection | 5227* | 
| -------- | RObust Header Compression Version 2 (ROHCv2): Profiles for RTP, UDP, IP, ESP and UDP-Lite | 5225* | 
| -------- | Discovering Location-to-Service Translation (LoST) Servers Using the Dynamic Host Configuration Protocol (DHCP) | 5223* | 
| -------- | LoST: A Location-to-Service Translation Protocol | 5222* | 
| -------- | A More Loss-Tolerant RTP Payload Format for MP3 Audio | 5219* | 
| -------- | The EAP-TLS Authentication Protocol | 5216* | 
| -------- | RTP Payload Format for Vorbis Encoded Audio | 5215* | 
| -------- | Proxy Mobile IPv6 | 5213* | 
| -------- | Unicode Format for Network Interchange | 5198* | 
| -------- | Session Initiation Protocol (SIP) User Agent Capability Extension to Presence Information Data Format (PIDF) | 5196* | 
| -------- | BGP-Based Auto-Discovery for Layer-1 VPNs | 5195* | 
| -------- | DHCP Options for Protocol for Carrying Authentication for Network Access (PANA) Authentication Agents | 5192* | 
| -------- | Protocol for Carrying Authentication for Network Access (PANA) | 5191* | 
| -------- | Definitions of Managed Objects for Middlebox Communication | 5190* | 
| -------- | Middlebox Communication (MIDCOM) Protocol Semantics | 5189* | 
| -------- | RTP Payload Format for the Enhanced Variable Rate Wideband Codec (EVRC-WB) and the Media Subtype Updates for EVRC-B Codec | 5188* | 
| -------- | OSPFv3 Graceful Restart | 5187* | 
| -------- | OSPF Multi-Area Adjacency | 5185* | 
| -------- | Sieve Email Filtering: Environment Extension | 5183* | 
| -------- | IMAP Extension for Referencing the Last SEARCH Result | 5182* | 
| -------- | Generic Security Service Application Program Interface (GSS-API) Domain-Based Service Names Mapping for the Kerberos V GSS Mechanism | 5179* | 
| -------- | Generic Security Service Application Program Interface (GSS-API) Internationalization and Domain-Based Service Names and Name Type | 5178* | 
| -------- | Network Mobility (NEMO) Extensions for Mobile IPv4 | 5177* | 
| -------- | IPv6 Router Advertisement Flags Option | 5175* | 
| -------- | Sieve Email Filtering: Body Extension | 5173* | 
| -------- | Negotiation for IPv6 Datagram Compression Using IPv6 Control Protocol | 5172* | 
| -------- | Low Density Parity Check (LDPC) Staircase and Triangle Forward Error Correction (FEC) Schemes | 5170* | 
| -------- | Extension Formats for Unidirectional Lightweight Encapsulation (ULE) and the Generic Stream Encapsulation (GSE) | 5163* | 
| -------- | IMAP4 Extensions for Quick Mailbox Resynchronization | 5162* | 
| -------- | The IMAP ENABLE Extension | 5161* | 
| -------- | DNS Security (DNSSEC) Hashed Authenticated Denial of Existence | 5155* | 
| -------- | A Per-Domain Path Computation Method for Establishing Inter-Domain Traffic Engineering (TE) Label Switched Paths (LSPs) | 5152* | 
| -------- | Inter-Domain MPLS and GMPLS Traffic Engineering -- Resource Reservation Protocol-Traffic Engineering (RSVP-TE) Extensions | 5151* | 
| -------- | Label Switched Path Stitching with Generalized Multiprotocol Label Switching Traffic Engineering (GMPLS TE) | 5150* | 
| -------- | URI Fragment Identifiers for the text/plain Media Type | 5147* | 
| -------- | A Domain Availability Check (DCHK) Registry Type for the Internet Registry Information Service (IRIS) | 5144* | 
| -------- | Mobility Header Home Agent Switch Message | 5142* | 
| -------- | A Telephony Gateway REgistration Protocol (TGREP) | 5140* | 
| -------- | Revised Civic Location Format for Presence Information Data Format Location Object (PIDF-LO) | 5139* | 
| -------- | Terminal Endpoint Identifier (TEI) Query Request Number Change | 5133* | 
| -------- | IP Multicast MIB | 5132* | 
| -------- | A MIB Textual Convention for Language Tags | 5131* | 
| -------- | A Policy Control Mechanism in IS-IS Using Administrative Tags | 5130* | 
| -------- | Explicit Congestion Marking in MPLS | 5129* | 
| -------- | Extended Secure RTP Profile for Real-time Transport Control Protocol (RTCP)-Based Feedback (RTP/SAVPF) | 5124* | 
| -------- | Internationalized Resource Identifiers (IRIs) and Uniform Resource Identifiers (URIs) for the Extensible Messaging and Presence Protocol (XMPP) | 5122* | 
| -------- | Transmission of IPv6 via the IPv6 Convergence Sublayer over IEEE 802.16 Networks | 5121* | 
| -------- | M-ISIS: Multi Topology (MT) Routing in Intermediate System to Intermediate Systems (IS-ISs) | 5120* | 
| -------- | An Interface and Algorithms for Authenticated Encryption | 5116* | 
| -------- | Telephony Routing over IP (TRIP) Attribute for Resource Priority | 5115* | 
| -------- | The Presence-Specific Static Dictionary for Signaling Compression (Sigcomp) | 5112* | 
| -------- | RTP Payload Format for Generic Forward Error Correction | 5109* | 
| -------- | DHCP Server Identifier Override Suboption | 5107* | 
| -------- | ENUM Validation Token Format Definition | 5105* | 
| -------- | Codec Control Messages in the RTP Audio-Visual Profile with Feedback (AVPF) | 5104* | 
| -------- | Bidirectional Flow Export Using IP Flow Information Export (IPFIX) | 5103* | 
| -------- | Information Model for IP Flow Information Export | 5102* | 
| -------- | Specification of the IP Flow Information Export (IPFIX) Protocol for the Exchange of IP Traffic Flow Information | 5101* | 
| -------- | Signaling MIB for PacketCable and IPCablecom Multimedia Terminal Adapters (MTAs) | 5098* | 
| -------- | MIB for the UDP-Lite protocol | 5097* | 
| -------- | Mobile IPv6 Experimental Messages | 5096* | 
| -------- | Deprecation of Type 0 Routing Headers in IPv6 | 5095* | 
| -------- | Mobile IPv6 Vendor Specific Option | 5094* | 
| IMAP-URL | IMAP URL Scheme | 5092 | 
| -------- | RADIUS Extension for Digest Authentication | 5090* | 
| -------- | IS-IS Protocol Extensions for Path Computation Element (PCE) Discovery | 5089* | 
| -------- | OSPF Protocol Extensions for Path Computation Element (PCE) Discovery | 5088* | 
| -------- | Pseudowire Virtual Circuit Connectivity Verification (VCCV): A Control Channel for Pseudowires | 5085* | 
| -------- | Using AES-CCM and AES-GCM Authenticated Encryption in the Cryptographic Message Syntax (CMS) | 5084 | 
| -------- | Cryptographic Message Syntax (CMS) Authenticated-Enveloped-Data Content Type | 5083 | 
| -------- | The Generalized TTL Security Mechanism (GTSM) | 5082 | 
| -------- | Common Remote Authentication Dial In User Service (RADIUS) Implementation Issues and Suggested Fixes | 5080* | 
| -------- | Rejecting Anonymous Requests in the Session Initiation Protocol (SIP) | 5079* | 
| -------- | Transport Layer Security (TLS) Session Resumption without Server-Side State | 5077* | 
| -------- | ENUM Validation Information Mapping for the Extensible Provisioning Protocol | 5076* | 
| -------- | IGP Routing Protocol Extensions for Discovery of Traffic Engineering Node Capabilities | 5073* | 
| -------- | The Incident Object Description Exchange Format | 5070* | 
| -------- | Ethernet in the First Mile Copper (EFMCu) Interfaces MIB | 5066 | 
| -------- | The Archived-At Message Header Field | 5064* | 
| -------- | Extensions to GMPLS Resource Reservation Protocol (RSVP) Graceful Restart | 5063 | 
| -------- | Stream Control Transmission Protocol (SCTP) Dynamic Address Reconfiguration | 5061 | 
| -------- | Protocol Independent Multicast MIB | 5060* | 
| -------- | Bootstrap Router (BSR) Mechanism for Protocol Independent Multicast (PIM) | 5059* | 
| -------- | On the Use of Channel Bindings to Secure Channels | 5056 | 
| -------- | Server-Based Certificate Validation Protocol (SCVP) | 5055* | 
| -------- | Raptor Forward Error Correction Scheme for Object Delivery | 5053 | 
| -------- | Forward Error Correction (FEC) Building Block | 5052 | 
| -------- | i;unicode-casemap - Simple Unicode Collation Algorithm | 5051 | 
| -------- | Applying Signaling Compression (SigComp) to the Session Initiation Protocol (SIP) | 5049* | 
| -------- | Internet Small Computer System Interface (iSCSI) Corrections and Clarifications | 5048 | 
| -------- | Internet Small Computer System Interface (iSCSI) Extensions for Remote Direct Memory Access (RDMA) | 5046 | 
| -------- | Marker PDU Aligned Framing for TCP Specification | 5044 | 
| -------- | Stream Control Transmission Protocol (SCTP) Direct Data Placement (DDP) Adaptation | 5043 | 
| -------- | Direct Data Placement Protocol (DDP) / Remote Direct Memory Access Protocol (RDMAP) Security | 5042 | 
| -------- | Direct Data Placement over Reliable Transports | 5041 | 
| -------- | A Remote Direct Memory Access Protocol Specification | 5040 | 
| -------- | Enhanced Security Services (ESS) Update: Adding CertID Algorithm Agility | 5035 | 
| POP3-AUTH | The Post Office Protocol (POP3) Simple Authentication and Security Layer (SASL) Authentication Mechanism | 5034 | 
| -------- | WITHIN Search Extension to the IMAP Protocol | 5032 | 
| -------- | A Uniform Resource Name (URN) for Emergency and Other Well-Known Services | 5031* | 
| -------- | Definition of an IS-IS Link Attribute Sub-TLV | 5029 | 
| -------- | A Telephone Number Mapping (ENUM) Service Registration for Instant Messaging (IM) Services | 5028 | 
| -------- | Security Preconditions for Session Description Protocol (SDP) Media Streams | 5027 | 
| -------- | Mobile IPv6 Bootstrapping in Split Scenario | 5026 | 
| -------- | Presence Authorization Rules | 5025* | 
| -------- | The Atom Publishing Protocol | 5023 | 
| -------- | Extended Kerberos Version 5 Key Distribution Center (KDC) Exchanges over TCP | 5021 | 
| -------- | The Lightweight Directory Access Protocol (LDAP) entryDN Operational Attribute | 5020 | 
| -------- | The Lightweight Online Certificate Status Protocol (OCSP) Profile for High-Volume Environments | 5019 | 
| -------- | Connection Establishment in the Binary Floor Control Protocol (BFCP) | 5018 | 
| -------- | MIB Textual Conventions for Uniform Resource Identifiers (URIs) | 5017 | 
| -------- | Bidirectional Protocol Independent Multicast (BIDIR-PIM) | 5015 | 
| -------- | Automated Updates of DNS Security (DNSSEC) Trust Anchors | 5011 | 
| -------- | The Dynamic Host Configuration Protocol Version 4 (DHCPv4) Relay Agent Flags Suboption | 5010 | 
| -------- | DHCPv6 Leasequery | 5007 | 
| -------- | Feed Paging and Archiving | 5005 | 
| -------- | Avoid BGP Best Path Transitions from One External to Another | 5004 | 
| -------- | Attachment Individual Identifier (AII) Types for Aggregation | 5003 | 
| -------- | DNS Name Server Identifier (NSID) Option | 5001 | 
| -------- | Evidence Record Syntax (ERS) | 4998 | 
| -------- | Formal Notation for RObust Header Compression (ROHC-FN) | 4997 | 
| -------- | RObust Header Compression (ROHC): A Profile for TCP/IP (ROHC-TCP) | 4996 | 
| -------- | DHCPv6 Relay Agent Echo Request Option | 4994 | 
| -------- | A Lightweight UDP Transfer Protocol for the Internet Registry Information Service | 4993 | 
| -------- | XML Pipelining with Chunks for the Internet Registry Information Service | 4992 | 
| -------- | A Common Schema for Internet Registry Information Service Transfer Protocols | 4991 | 
| -------- | Internet X.509 Public Key Infrastructure Subject Alternative Name for Expression of Service Name | 4985 | 
| -------- | Fibre Channel Registered State Change Notification (RSCN) MIB | 4983 | 
| -------- | Support for Multiple Hash Algorithms in Cryptographically Generated Addresses (CGAs) | 4982 | 
| -------- | IANA Registration for Enumservice 'XMPP' | 4979 | 
| -------- | The IMAP COMPRESS Extension | 4978 | 
| -------- | Relay Extensions for the Message Sessions Relay Protocol (MSRP) | 4976 | 
| -------- | The Message Session Relay Protocol (MSRP) | 4975 | 
| -------- | Generalized MPLS (GMPLS) RSVP-TE Signaling Extensions in Support of Calls | 4974 | 
| -------- | Routing Extensions for Discovery of Multiprotocol (MPLS) Label Switch Router (LSR) Traffic Engineering (TE) Mesh Membership | 4972 | 
| -------- | Intermediate System to Intermediate System (IS-IS) Extensions for Advertising Router Information | 4971 | 
| -------- | Extensions to OSPF for Advertising Optional Router Capabilities | 4970 | 
| -------- | IANA Registration for vCard Enumservice | 4969 | 
| -------- | Dial String Parameter for the Session Initiation Protocol Uniform Resource Identifier | 4967 | 
| -------- | Stream Control Transmission Protocol | 4960 | 
| -------- | IMAP Extension for Simple Authentication and Security Layer (SASL) Initial Client Response | 4959 | 
| -------- | DNS Security (DNSSEC) Experiments | 4955 | 
| -------- | SMTP Service Extension for Authentication | 4954 | 
| -------- | Fail Over Extensions for Layer 2 Tunneling Protocol (L2TP) "failover" | 4951 | 
| -------- | ICMP Extensions for Multiprotocol Label Switching | 4950 | 
| -------- | The Internet IP Security PKI Profile of IKEv1/ISAKMP, IKEv2, and PKIX | 4945 | 
| -------- | Transmission of IPv6 Packets over IEEE 802.15.4 Networks | 4944 | 
| -------- | Definitions of Managed Objects for iSNS (Internet Storage Name Service) | 4939 | 
| -------- | Fibre Channel Zone Server MIB | 4936 | 
| -------- | Fibre Channel Fabric Configuration Server MIB | 4935 | 
| -------- | Crankback Signaling Extensions for MPLS and GMPLS RSVP-TE | 4920 | 
| WEBDAV | HTTP Extensions for Web Distributed Authoring and Versioning (WebDAV) | 4918 | 
| -------- | Mobile IPv4 Message String Extension | 4917 | 
| -------- | Connected Identity in the Session Initiation Protocol (SIP) | 4916 | 
| -------- | Multi-Topology (MT) Routing in OSPF | 4915 | 
| -------- | Representing Trunk Groups in tel/sip Uniform Resource Identifiers (URIs) | 4904 | 
| -------- | Protocol Extensions for Header Compression over MPLS | 4901 | 
| -------- | TCP Extended Statistics MIB | 4898 | 
| -------- | Signaling Compression (SigComp) Corrections and Clarifications | 4896 | 
| -------- | Authenticated Chunks for the Stream Control Transmission Protocol (SCTP) | 4895 | 
| -------- | BGP Support for Four-octet AS Number Space | 4893 | 
| -------- | Extended ICMP to Support Multi-Part Messages | 4884 | 
| -------- | OpenPGP Message Format | 4880 | 
| -------- | Definitions and Managed Objects for Operations, Administration, and Maintenance (OAM) Functions on Ethernet-Like Interfaces | 4878 | 
| -------- | Mobile IPv6 Operation with IKEv2 and the Revised IPsec Architecture | 4877 | 
| -------- | Extensions to Resource Reservation Protocol - Traffic Engineering (RSVP-TE) for Point-to-Multipoint TE Label Switched Paths (LSPs) | 4875 | 
| -------- | Exclude Routes - Extension to Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) | 4874 | 
| -------- | GMPLS Segment Recovery | 4873 | 
| -------- | RSVP-TE Extensions in Support of End-to-End Generalized Multi-Protocol Label Switching (GMPLS) Recovery | 4872 | 
| -------- | Using HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512 with IPsec | 4868 | 
| -------- | RTP Payload Format and File Storage Format for the Adaptive Multi-Rate (AMR) and Adaptive Multi-Rate Wideband (AMR-WB) Audio Codecs | 4867 | 
| -------- | Enhanced Route Optimization for Mobile IPv6 | 4866 | 
| -------- | SMTP Submission Service Extension for Future Message Release | 4865 | 
| -------- | Wildcard Pseudowire Type | 4863 | 
| -------- | Generic Aggregate Resource ReSerVation Protocol (RSVP) Reservations | 4860 | 
| -------- | Media Type Registration of Payload Formats in the RTP Profile for Audio and Video Conferences | 4856 | 
| -------- | Media Type Registration of RTP Payload Formats | 4855 | 
| -------- | Cryptographic Message Syntax (CMS) Multiple Signer Clarification | 4853 | 
| -------- | Declarative Public Extension Key for Internet Small Computer Systems Interface (iSCSI) Node Architecture | 4850 | 
| -------- | RADIUS Filter Rule Attribute | 4849 | 
| -------- | Domain-Based Application Service Location Using URIs and the Dynamic Delegation Discovery Service (DDDS) | 4848 | 
| -------- | Synchronous Optical Network/Synchronous Digital Hierarchy (SONET/SDH) Circuit Emulation over Packet (CEP) | 4842 | 
| -------- | Managed Objects of Ethernet Passive Optical Networks (EPON) | 4837 | 
| MAU-MIB | Definitions of Managed Objects for IEEE 802.3 Medium Attachment Units (MAUs) | 4836 | 
| ESP | Cryptographic Algorithm Implementation Requirements for Encapsulating Security Payload (ESP) and Authentication Header (AH) | 4835 | 
| -------- | Timezone Options for DHCP | 4833 | 
| -------- | An Extensible Markup Language (XML) Configuration Access Protocol (XCAP) Usage for Manipulating Presence Document Contents | 4827 | 
| -------- | Extensible Markup Language (XML) Formats for Representing Resource Lists | 4826 | 
| -------- | The Extensible Markup Language (XML) Configuration Access Protocol (XCAP) | 4825 | 
| RIP2-MD5 | RIPv2 Cryptographic Authentication | 4822 | 
| -------- | Packetization Layer Path MTU Discovery | 4821 | 
| -------- | Padding Chunk and Parameter for the Stream Control Transmission Protocol (SCTP) | 4820 | 
| -------- | Secure Shell Public Key Subsystem | 4819 | 
| -------- | RADIUS Delegated-IPv6-Prefix Attribute | 4818 | 
| -------- | Encapsulation of MPLS over Layer 2 Tunneling Protocol Version 3 | 4817 | 
| -------- | Pseudowire Emulation Edge-to-Edge (PWE3) Asynchronous Transfer Mode (ATM) Transparent Cell Transport Service | 4816 | 
| -------- | RObust Header Compression (ROHC): Corrections and Clarifications to RFC 3095 | 4815 | 
| -------- | IPsec Security Policy Database Configuration MIB | 4807 | 
| -------- | Online Certificate Status Protocol (OCSP) Extensions to IKEv2 | 4806 | 
| -------- | Definitions of Managed Objects for the DS1, J1, E1, DS2, and E2 Interface Types | 4805 | 
| -------- | Aggregation of Resource ReSerVation Protocol (RSVP) Reservations over MPLS TE/DS-TE Tunnels | 4804 | 
| -------- | Generalized Multiprotocol Label Switching (GMPLS) Label Switching Router (LSR) Management Information Base | 4803 | 
| -------- | Generalized Multiprotocol Label Switching (GMPLS) Traffic Engineering Management Information Base | 4802 | 
| -------- | Definitions of Textual Conventions for Generalized Multiprotocol Label Switching (GMPLS) Management | 4801 | 
| -------- | Connecting IPv6 Islands over IPv4 MPLS Using IPv6 Provider Edge Routers (6PE) | 4798 | 
| -------- | The Session Description Protocol (SDP) Content Attribute | 4796 | 
| -------- | Encoding Instructions for the Generic String Encoding Rules (GSER) | 4792 | 
| -------- | Calendaring Extensions to WebDAV (CalDAV) | 4791 | 
| -------- | Internet Application Protocol Collation Registry | 4790 | 
| -------- | Simple Network Management Protocol (SNMP) over IEEE 802 Networks | 4789 | 
| -------- | Enhancements to RTP Payload Formats for EVRC Family Codecs | 4788 | 
| -------- | Pre-Shared Key (PSK) Ciphersuites with NULL Encryption for Transport Layer Security (TLS) | 4785 | 
| -------- | GMPLS - Communication of Alarm Information | 4783 | 
| -------- | Graceful Restart Mechanism for BGP with MPLS | 4781 | 
| -------- | Management Information Base for the Session Initiation Protocol (SIP) | 4780 | 
| -------- | Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) Option for Civic Addresses Configuration Information | 4776 | 
| -------- | Integrity Transform Carrying Roll-Over Counter for the Secure Real-time Transport Protocol (SRTP) | 4771 | 
| -------- | IANA Registration for an Enumservice Containing Public Switched Telephone Network (PSTN) Signaling Information | 4769 | 
| -------- | Virtual Private LAN Service (VPLS) Using Label Distribution Protocol (LDP) Signaling | 4762 | 
| -------- | Virtual Private LAN Service (VPLS) Using BGP for Auto-Discovery and Signaling | 4761 | 
| -------- | The ENUM Dip Indicator Parameter for the "tel" URI | 4759 | 
| -------- | IP over InfiniBand: Connected Mode | 4755 | 
| -------- | IKE and IKEv2 Authentication Using the Elliptic Curve Digital Signature Algorithm (ECDSA) | 4754 | 
| SASL | The Kerberos V5 ("GSSAPI") Simple Authentication and Security Layer (SASL) Mechanism | 4752 | 
| OSPF-MIB | OSPF Version 2 Management Information Base | 4750 | 
| -------- | RTP Payload Format for the G.729.1 Audio Codec | 4749 | 
| -------- | The Virtual Fabrics MIB | 4747 | 
| -------- | Common Policy: A Document Format for Expressing Privacy Preferences | 4745 | 
| -------- | Using the NETCONF Protocol over the Blocks Extensible Exchange Protocol (BEEP) | 4744 | 
| -------- | Using NETCONF over the Simple Object Access Protocol (SOAP) | 4743 | 
| -------- | Diameter Session Initiation Protocol (SIP) Application | 4740 | 
| -------- | MIKEY-RSA-R: An Additional Mode of Key Distribution in Multimedia Internet KEYing (MIKEY) | 4738 | 
| -------- | Packet Reordering Metrics | 4737 | 
| -------- | Example Media Types for Use in Documentation | 4735 | 
| -------- | Definition of Events for Modem, Fax, and Text Telephony Signals | 4734 | 
| -------- | RTP Payload for DTMF Digits, Telephony Tones, and Telephony Signals | 4733 | 
| -------- | IMAP4 Extension to SEARCH Command for Controlling What Kind of Information Is Returned | 4731 | 
| -------- | A Session Initiation Protocol (SIP) Event Package for Key Press Stimulus (KPML) | 4730 | 
| -------- | Experimental Values In IPv4, IPv6, ICMPv4, ICMPv6, UDP, and TCP Headers | 4727 | 
| -------- | Graceful Restart Mechanism for BGP | 4724 | 
| -------- | Mobile IPv4 Challenge/Response Extensions (Revised) | 4721 | 
| -------- | Pseudowire Emulation Edge-to-Edge (PWE3) Frame Check Sequence Retention | 4720 | 
| -------- | Transport of Ethernet Frames over Layer 2 Tunneling Protocol Version 3 (L2TPv3) | 4719 | 
| -------- | Encapsulation Methods for Transport of Asynchronous Transfer Mode (ATM) over MPLS Networks | 4717 | 
| -------- | Transport Mappings for Real-time Application Quality-of-Service Monitoring (RAQMON) Protocol Data Unit (PDU) | 4712 | 
| -------- | Real-time Application Quality-of-Service Monitoring (RAQMON) MIB | 4711 | 
| -------- | Real-time Application Quality-of-Service Monitoring (RAQMON) Framework | 4710 | 
| -------- | Definitions of Managed Objects for Asymmetric Digital Subscriber Line 2 (ADSL2) | 4706 | 
| -------- | The Dynamic Host Configuration Protocol for IPv6 (DHCPv6) Client Fully Qualified Domain Name (FQDN) Option | 4704 | 
| -------- | Resolution of Fully Qualified Domain Name (FQDN) Conflicts among Dynamic Host Configuration Protocol (DHCP) Clients | 4703 | 
| -------- | The Dynamic Host Configuration Protocol (DHCP) Client Fully Qualified Domain Name (FQDN) Option | 4702 | 
| -------- | A DNS Resource Record (RR) for Encoding Dynamic Host Configuration Protocol (DHCP) Information (DHCID RR) | 4701 | 
| -------- | IRIS: An Address Registry (areg) Type for the Internet Registry Information Service | 4698 | 
| -------- | Number Portability Parameters for the "tel" URI | 4694 | 
| -------- | Atom Threading Extensions | 4685 | 
| -------- | Constrained Route Distribution for Border Gateway Protocol/MultiProtocol Label Switching (BGP/MPLS) Internet Protocol (IP) Virtual Private Networks (VPNs) | 4684 | 
| -------- | Internet X.509 Public Key Infrastructure Subject Identification Method (SIM) | 4683 | 
| -------- | Multimedia Terminal Adapter (MTA) Management Information Base for PacketCable- and IPCablecom-Compliant Devices | 4682 | 
| -------- | TLS User Mapping Extension | 4681 | 
| -------- | TLS Handshake Message for Supplemental Data | 4680 | 
| -------- | RADIUS Attributes for Virtual LAN and Priority Support | 4675 | 
| -------- | RADIUS Authentication Server MIB for IPv6 | 4669 | 
| -------- | RADIUS Authentication Client MIB for IPv6 | 4668 | 
| -------- | Layer 2 Virtual Private Network (L2VPN) Extensions for Layer 2 Tunneling Protocol (L2TP) | 4667 | 
| -------- | Signaling System 7 (SS7) Message Transfer Part 3 (MTP3) - User Adaptation Layer (M3UA) | 4666 | 
| -------- | A Session Initiation Protocol (SIP) Event Notification Extension for Resource Lists | 4662 | 
| -------- | An Extensible Markup Language (XML)-Based Format for Event Notification Filtering | 4661 | 
| -------- | Functional Description of Event Notification Filtering | 4660 | 
| -------- | BGP-MPLS IP Virtual Private Network (VPN) Extension for IPv6 VPN | 4659 | 
| -------- | A One-way Active Measurement Protocol (OWAMP) | 4656 | 
| -------- | HMAC-Authenticated Diffie-Hellman for Multimedia Internet KEYing (MIKEY) | 4650 | 
| -------- | Dynamic Host Configuration Protocol for IPv6 (DHCPv6) Relay Agent Remote-ID Option | 4649 | 
| -------- | The Base16, Base32, and Base64 Data Encodings | 4648 | 
| -------- | Network News Transfer Protocol (NNTP) Extension for Streaming Feeds | 4644 | 
| -------- | Network News Transfer Protocol (NNTP) Extension for Authentication | 4643 | 
| -------- | Using Transport Layer Security (TLS) with Network News Transfer Protocol (NNTP) | 4642 | 
| -------- | Cable Device Management Information Base for Data-Over-Cable Service Interface Specification (DOCSIS) Compliant Cable Modems and Cable Modem Termination Systems | 4639 | 
| -------- | Foreign Agent Error Extension for Mobile IPv4 | 4636 | 
| -------- | HMAC SHA (Hashed Message Authentication Code, Secure Hash Algorithm) TSIG Algorithm Identifiers | 4635 | 
| -------- | Link Management Protocol (LMP) Management Information Base (MIB) | 4631 | 
| -------- | RTP Payload Format for ITU-T Rec. H.263 Video | 4629 | 
| -------- | MIB for Fibre Channel's Fabric Shortest Path First (FSPF) Protocol | 4626 | 
| -------- | Fibre Channel Routing Information MIB | 4625 | 
| -------- | Pseudowire Emulation Edge-to-Edge (PWE3) Fragmentation and Reassembly | 4623 | 
| -------- | Encapsulation Methods for Transport of Frame Relay over Multiprotocol Label Switching (MPLS) Networks | 4619 | 
| -------- | Encapsulation Methods for Transport of PPP/High-Level Data Link Control (HDLC) over MPLS Networks | 4618 | 
| -------- | The PLAIN Simple Authentication and Security Layer (SASL) Mechanism | 4616 | 
| -------- | The Advanced Encryption Standard-Cipher-based Message Authentication Code-Pseudo-Random Function-128 (AES-CMAC-PRF-128) Algorithm for the Internet Key Exchange Protocol (IKE) | 4615 | 
| -------- | Anycast-RP Using Protocol Independent Multicast (PIM) | 4610 | 
| -------- | Source-Specific Multicast for IP | 4607 | 
| -------- | Generalized Multi-Protocol Label Switching (GMPLS) Extensions for Synchronous Optical Network (SONET) and Synchronous Digital Hierarchy (SDH) Control | 4606 | 
| -------- | Internet Group Management Protocol (IGMP) / Multicast Listener Discovery (MLD)-Based Multicast Forwarding ("IGMP/MLD Proxying") | 4605 | 
| -------- | Using Internet Group Management Protocol Version 3 (IGMPv3) and Multicast Listener Discovery Protocol Version 2 (MLDv2) for Source-Specific Multicast | 4604 | 
| PIM-SM | Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised) | 4601 | 
| -------- | Real-time Transport Protocol (RTP) Payload Format for Enhanced AC-3 (E-AC-3) Audio | 4598 | 
| -------- | The Role of Wildcards in the Domain Name System | 4592 | 
| -------- | Frame Relay over Layer 2 Tunneling Protocol Version 3 (L2TPv3) | 4591 | 
| -------- | Location Types Registry | 4589 | 
| -------- | RTP Retransmission Payload Format | 4588 | 
| RTP-H.261 | RTP Payload Format for H.261 Video Streams | 4587 | 
| -------- | Extended RTP Profile for Real-time Transport Control Protocol (RTCP)-Based Feedback (RTP/AVPF) | 4585 | 
| -------- | Session Description Protocol (SDP) Format for Binary Floor Control Protocol (BFCP) Streams | 4583 | 
| -------- | The Binary Floor Control Protocol (BFCP) | 4582 | 
| -------- | Cryptographically Generated Addresses (CGA) Extension Field Format | 4581 | 
| -------- | Dynamic Host Configuration Protocol for IPv6 (DHCPv6) Relay Agent Subscriber-ID Option | 4580 | 
| -------- | OSPF as the Provider/Customer Edge Protocol for BGP/MPLS IP Virtual Private Networks (VPNs) | 4577 | 
| -------- | Using a Link State Advertisement (LSA) Options Bit to Prevent Looping in BGP/MPLS IP Virtual Private Networks (VPNs) | 4576 | 
| -------- | A Session Initiation Protocol (SIP) Event Package for Conference State | 4575 | 
| -------- | The Session Description Protocol (SDP) Label Attribute | 4574 | 
| -------- | MIME Type Registration for RTP Payload Format for H.224 | 4573 | 
| -------- | Connection-Oriented Media Transport over the Transport Layer Security (TLS) Protocol in the Session Description Protocol (SDP) | 4572 | 
| -------- | Framing Real-time Transport Protocol (RTP) and RTP Control Protocol (RTCP) Packets over Connection-Oriented Transport | 4571 | 
| -------- | Session Description Protocol (SDP) Source Filters | 4570 | 
| -------- | Session Description Protocol (SDP) Security Descriptions for Media Streams | 4568 | 
| -------- | Key Management Extensions for Session Description Protocol (SDP) and Real Time Streaming Protocol (RTSP) | 4567 | 
| SDP | SDP: Session Description Protocol | 4566 | 
| -------- | The Key ID Information Type for the General Extension Payload in Multimedia Internet KEYing (MIKEY) | 4563 | 
| -------- | Definition of a Record Route Object (RRO) Node-Id Sub-Object | 4561 | 
| -------- | Definitions of Managed Objects for Remote Ping, Traceroute, and Lookup Operations | 4560 | 
| -------- | Node-ID Based Resource Reservation Protocol (RSVP) Hello: A Clarification Statement | 4558 | 
| -------- | Online Certificate Status Protocol (OCSP) Support for Public Key Cryptography for Initial Authentication in Kerberos (PKINIT) | 4557 | 
| -------- | Public Key Cryptography for Initial Authentication in Kerberos (PKINIT) | 4556 | 
| -------- | IKEv2 Mobility and Multihoming Protocol (MOBIKE) | 4555 | 
| SAToP | Structure-Agnostic Time Division Multiplexing (TDM) over Packet (SAToP) | 4553 | 
| -------- | Authentication/Confidentiality for OSPFv3 | 4552 | 
| -------- | IMAP Extension for Conditional STORE Operation or Quick Flag Changes Resynchronization | 4551 | 
| -------- | Internet Code Point (ICP) Assignments for NSAP Addresses | 4548 | 
| -------- | Event Notification Management Information Base for Data over Cable Service Interface Specifications (DOCSIS)-Compliant Cable Modems and Cable Modem Termination Systems | 4547 | 
| -------- | Radio Frequency (RF) Interface Management Information Base for Data over Cable Service Interface Specifications (DOCSIS) 2.0 Compliant RF Interfaces | 4546 | 
| -------- | Definitions of Managed Objects for IP Storage User Identity Authorization | 4545 | 
| -------- | Definitions of Managed Objects for Internet Small Computer System Interface (iSCSI) | 4544 | 
| -------- | The Use of Galois Message Authentication Code (GMAC) in IPsec ESP and AH | 4543 | 
| -------- | Request Authorization through Dialog Identification in the Session Initiation Protocol (SIP) | 4538 | 
| -------- | Kerberos Cryptosystem Negotiation Extension | 4537 | 
| -------- | GSAKMP: Group Secure Association Key Management Protocol | 4535 | 
| -------- | Group Security Policy Token v1 | 4534 | 
| -------- | Lightweight Directory Access Protocol (LDAP) "Who am I?" Operation | 4532 | 
| -------- | Lightweight Directory Access Protocol (LDAP) entryUUID Operational Attribute | 4530 | 
| -------- | Lightweight Directory Access Protocol (LDAP) Assertion Control | 4528 | 
| -------- | Lightweight Directory Access Protocol (LDAP) Read Entry Controls | 4527 | 
| -------- | Lightweight Directory Access Protocol (LDAP) Absolute True and False Filters | 4526 | 
| -------- | COSINE LDAP/X.500 Schema | 4524 | 
| -------- | Lightweight Directory Access Protocol (LDAP) Schema Definitions for X.509 Certificates | 4523 | 
| -------- | Lightweight Directory Access Protocol (LDAP): The Binary Encoding Option | 4522 | 
| -------- | Lightweight Directory Access Protocol (LDAP): Schema for User Applications | 4519 | 
| -------- | Lightweight Directory Access Protocol (LDAP): Internationalized String Preparation | 4518 | 
| LDAP3-ATD | Lightweight Directory Access Protocol (LDAP): Syntaxes and Matching Rules | 4517 | 
| LDAP-URL | Lightweight Directory Access Protocol (LDAP): Uniform Resource Locator | 4516 | 
| STR-LDAP | Lightweight Directory Access Protocol (LDAP): String Representation of Search Filters | 4515 | 
| LDAP3-UTF8 | Lightweight Directory Access Protocol (LDAP): String Representation of Distinguished Names | 4514 | 
| LDAP | Lightweight Directory Access Protocol (LDAP): Authentication Methods and Security Mechanisms | 4513 | 
| -------- | Lightweight Directory Access Protocol (LDAP): Directory Information Models | 4512 | 
| LDAP | Lightweight Directory Access Protocol (LDAP): The Protocol | 4511 | 
| LDAPV3 | Lightweight Directory Access Protocol (LDAP): Technical Specification Road Map | 4510 | 
| -------- | Use of SHA-256 in DNSSEC Delegation Signer (DS) Resource Records (RRs) | 4509 | 
| -------- | Conveying Feature Tags with the Session Initiation Protocol (SIP) REFER Method | 4508 | 
| SASL-ANON | Anonymous Simple Authentication and Security Layer (SASL) Mechanism | 4505 | 
| -------- | Domain Name System Uniform Resource Identifiers | 4501 | 
| -------- | A Resource Reservation Protocol (RSVP) Extension for the Reduction of Bandwidth of a Reservation Flow | 4495 | 
| -------- | The AES-CMAC-96 Algorithm and Its Use with IPsec | 4494 | 
| -------- | Using the GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms with the Internet X.509 Public Key Infrastructure Certificate and CRL Profile | 4491 | 
| -------- | Using the GOST 28147-89, GOST R 34.11-94, GOST R 34.10-94, and GOST R 34.10-2001 Algorithms with Cryptographic Message Syntax (CMS) | 4490 | 
| -------- | A Method for Generating Link-Scoped IPv6 Multicast Addresses | 4489 | 
| -------- | Suppression of Session Initiation Protocol (SIP) REFER Method Implicit Subscription | 4488 | 
| -------- | Subcodes for BGP Cease Notification Message | 4486 | 
| -------- | A Mechanism for Content Indirection in Session Initiation Protocol (SIP) Messages | 4483 | 
| -------- | CIPID: Contact Information for the Presence Information Data Format | 4482 | 
| -------- | Timed Presence Extensions to the Presence Information Data Format (PIDF) to Indicate Status Information for Past and Future Time Intervals | 4481 | 
| -------- | RPID: Rich Presence Extensions to the Presence Information Data Format (PIDF) | 4480 | 
| -------- | A Data Model for Presence | 4479 | 
| -------- | Attribute Certificate (AC) Policies Extension | 4476 | 
| -------- | Enhancements for Authenticated Identity Management in the Session Initiation Protocol (SIP) | 4474 | 
| -------- | Minimally Covering NSEC Records and DNSSEC On-line Signing | 4470 | 
| -------- | Internet Message Access Protocol (IMAP) CATENATE Extension | 4469 | 
| URLAUTH | Message Submission BURL Extension | 4468 | 
| -------- | Internet Message Access Protocol (IMAP) - URLAUTH Extension | 4467 | 
| -------- | Collected Extensions to IMAP4 ABNF | 4466 | 
| -------- | Generic Security Service Application Program Interface (GSS-API) Authentication and Key Exchange for the Secure Shell (SSH) Protocol | 4462 | 
| -------- | Definition of Managed Objects for Small Computer System Interface (SCSI) Entities | 4455 | 
| -------- | Asynchronous Transfer Mode (ATM) over Layer 2 Tunneling Protocol Version 3 (L2TPv3) | 4454 | 
| -------- | Securing Mobile IPv6 Route Optimization Using a Static Shared Key | 4449 | 
| -------- | Encapsulation Methods for Transport of Ethernet over MPLS Networks | 4448 | 
| -------- | Pseudowire Setup and Maintenance Using the Label Distribution Protocol (LDP) | 4447 | 
| -------- | Management Information Base for Intermediate System to Intermediate System (IS-IS) | 4444 | 
| -------- | Bootstrapping Timed Efficient Stream Loss-Tolerant Authentication (TESLA) | 4442 | 
| -------- | Fibre Channel Fabric Address Manager MIB | 4439 | 
| -------- | Fibre-Channel Name Server MIB | 4438 | 
| -------- | Detecting Network Attachment in IPv4 (DNAv4) | 4436 | 
| -------- | The AES-XCBC-PRF-128 Algorithm for the Internet Key Exchange Protocol (IKE) | 4434 | 
| -------- | Mobile IPv4 Dynamic Home Agent (HA) Assignment | 4433 | 
| -------- | RSA Key Exchange for the Secure Shell (SSH) Transport Layer Protocol | 4432 | 
| -------- | Kerberized Internet Negotiation of Keys (KINK) | 4430 | 
| -------- | Optimistic Duplicate Address Detection (DAD) for IPv6 | 4429 | 
| -------- | Generalized Multi-Protocol Label Switching (GMPLS) Recovery Functional Specification | 4426 | 
| -------- | RTP Payload Format for Video Codec 1 (VC-1) | 4425 | 
| -------- | Real-Time Transport Protocol (RTP) Payload Format for the Variable-Rate Multimode Wideband (VMR-WB) Extension Audio Codec | 4424 | 
| SASL | Simple Authentication and Security Layer (SASL) | 4422 | 
| -------- | RTP Payload Format for Uncompressed Video: Additional Colour Sampling Modes | 4421 | 
| -------- | Diffie-Hellman Group Exchange for the Secure Shell (SSH) Transport Layer Protocol | 4419 | 
| -------- | IANA Registration for Enumservice Voice | 4415 | 
| -------- | An ENUM Registry Type for the Internet Registry Information Service (IRIS) | 4414 | 
| -------- | Communications Resource Priority for the Session Initiation Protocol (SIP) | 4412 | 
| -------- | Extending the Session Initiation Protocol (SIP) Reason Header for Preemption Events | 4411 | 
| -------- | Definitions of Managed Objects for Fibre Channel Over TCP/IP (FCIP) | 4404 | 
| -------- | A Pseudo-Random Function (PRF) for the Kerberos V Generic Security Service Application Program Interface (GSS-API) Mechanism | 4402 | 
| -------- | A Pseudo-Random Function (PRF) API Extension for the Generic Security Service Application Program Interface (GSS-API) | 4401 | 
| SC-DNS | Storing Certificates in the Domain Name System (DNS) | 4398 | 
| -------- | RTP Payload Format for 3rd Generation Partnership Project (3GPP) Timed Text | 4396 | 
| -------- | MIME Type Registrations for 3GPP2 Multimedia Files | 4393 | 
| -------- | Transmission of IP over InfiniBand (IPoIB) | 4391 | 
| -------- | Dynamic Host Configuration Protocol (DHCP) over InfiniBand | 4390 | 
| -------- | Dynamic Host Configuration Protocol (DHCP) Leasequery | 4388 | 
| -------- | Internet X.509 Public Key Infrastructure Operational Protocols: Certificate Store Access via HTTP | 4387 | 
| -------- | Pseudowire Emulation Edge-to-Edge (PWE3) Control Word for Use over an MPLS PSN | 4385 | 
| -------- | The Use of Timed Efficient Stream Loss-Tolerant Authentication (TESLA) in the Secure Real-time Transport Protocol (SRTP) | 4383 | 
| -------- | MPLS/BGP Layer 3 Virtual Private Network (VPN) Management Information Base | 4382 | 
| -------- | Teredo: Tunneling IPv6 over UDP through Network Address Translations (NATs) | 4380 | 
| -------- | Detecting Multi-Protocol Label Switched (MPLS) Data Plane Failures | 4379 | 
| -------- | Chargeable User Identity | 4372 | 
| -------- | Lightweight Directory Access Protocol (LDAP) Proxied Authorization Control | 4370 | 
| -------- | Multiprotocol Label Switching (MPLS) Label-Controlled Asynchronous Transfer Mode (ATM) and Frame-Relay Management Interface Definition | 4368 | 
| -------- | BGP/MPLS IP Virtual Private Networks (VPNs) | 4364 | 
| -------- | Definitions of Managed Objects for Bridges with Traffic Classes, Multicast Filtering, and Virtual LAN Extensions | 4363 | 
| -------- | RObust Header Compression (ROHC): A Link-Layer Assisted Profile for IP/UDP/RTP | 4362 | 
| -------- | Node-specific Client Identifiers for Dynamic Host Configuration Protocol Version Four (DHCPv4) | 4361 | 
| -------- | BGP Extended Communities Attribute | 4360 | 
| -------- | The Use of RSA/SHA-1 Signatures within Encapsulating Security Payload (ESP) and Authentication Header (AH) | 4359 | 
| -------- | Mapping Between the Multimedia Messaging Service (MMS) and Internet Mail | 4356 | 
| -------- | IANA Registration for Enumservices email, fax, mms, ems, and sms | 4355 | 
| -------- | RTP Payload Format for the Extended Adaptive Multi-Rate Wideband (AMR-WB+) Audio Codec | 4352 | 
| -------- | High-Level Data Link Control (HDLC) Frames over Layer 2 Tunneling Protocol, Version 3 (L2TPv3) | 4349 | 
| -------- | Real-Time Transport Protocol (RTP) Payload Format for the Variable-Rate Multimode Wideband (VMR-WB) Audio Codec | 4348 | 
| -------- | Improved Arcfour Modes for the Secure Shell (SSH) Transport Layer Protocol | 4345 | 
| -------- | The Secure Shell (SSH) Transport Layer Encryption Modes | 4344 | 
| -------- | Domain Name System (DNS) Case Insensitivity Clarification | 4343 | 
| -------- | Profile for Datagram Congestion Control Protocol (DCCP) Congestion Control ID 3: TCP-Friendly Rate Control (TFRC) | 4342 | 
| -------- | Profile for Datagram Congestion Control Protocol (DCCP) Congestion Control ID 2: TCP-like Congestion Control | 4341 | 
| -------- | Datagram Congestion Control Protocol (DCCP) | 4340 | 
| -------- | Transmission of IPv6, IPv4, and Address Resolution Protocol (ARP) Packets over Fibre Channel | 4338 | 
| -------- | MIME Type Registration for MPEG-4 | 4337 | 
| -------- | The Secure Shell (SSH) Session Channel Break Extension | 4335 | 
| -------- | Certificate Extensions and Attributes Supporting Authentication in Point-to-Point Protocol (PPP) and Wireless Local Area Networks (WLAN) | 4334 | 
| -------- | Quota and Size Properties for Distributed Authoring and Versioning (DAV) Collections | 4331 | 
| -------- | Generalized Multi-Protocol Label Switching (GMPLS) Signaling Extensions for G.709 Optical Transport Networks Control | 4328 | 
| -------- | Unidirectional Lightweight Encapsulation (ULE) for Transmission of IP Datagrams over an MPEG-2 Transport Stream (TS) | 4326 | 
| -------- | Data Over Cable System Interface Specification Quality of Service Management Information Base (DOCSIS-QoS MIB) | 4323 | 
| -------- | Actions Addressing Identified Issues with the Session Initiation Protocol's (SIP) Non-INVITE Transaction | 4320 | 
| -------- | Definitions of Managed Objects for High Bit-Rate DSL - 2nd generation (HDSL2) and Single-Pair High-Speed Digital Subscriber Line (SHDSL) Lines | 4319 | 
| -------- | Definitions of Managed Objects for Bridges with Rapid Spanning Tree Protocol | 4318 | 
| IMAP4UIDPL | Internet Message Access Protocol (IMAP) - UIDPLUS extension | 4315 | 
| IMAP4-ACL | IMAP4 Access Control List (ACL) Extension | 4314 | 
| -------- | The Camellia Cipher Algorithm and Its Use With IPsec | 4312 | 
| -------- | IPv6 Host-to-Router Load Sharing | 4311 | 
| -------- | Using Advanced Encryption Standard (AES) CCM Mode with IPsec Encapsulating Security Payload (ESP) | 4309 | 
| -------- | Cryptographic Suites for IPsec | 4308 | 
| -------- | Cryptographic Algorithms for Use in the Internet Key Exchange Version 2 (IKEv2) | 4307 | 
| -------- | Extended Sequence Number (ESN) Addendum to IPsec Domain of Interpretation (DOI) for Internet Security Association and Key Management Protocol (ISAKMP) | 4304 | 
| ESP | IP Encapsulating Security Payload (ESP) | 4303 | 
| IP-AUTH | IP Authentication Header | 4302 | 
| IPSEC | Security Architecture for the Internet Protocol | 4301 | 
| -------- | RTP Payload Format for BroadVoice Speech Codecs | 4298 | 
| -------- | Mobile IPv6 Management Information Base | 4295 | 
| -------- | Management Information Base for the Internet Protocol (IP) | 4293 | 
| TABLE-MIB | IP Forwarding Table MIB | 4292 | 
| -------- | The Atom Syndication Format | 4287 | 
| -------- | Multicast Router Discovery | 4286 | 
| -------- | Mobile Node Identifier Option for Mobile IPv6 (MIPv6) | 4283 | 
| NAI | The Network Access Identifier | 4282 | 
| -------- | Dynamic Host Configuration Protocol (DHCP) Options for Broadcast and Multicast Control Servers | 4280 | 
| -------- | Pre-Shared Key Ciphersuites for Transport Layer Security (TLS) | 4279 | 
| BGP-4-MIB | Definitions of Managed Objects for BGP-4 | 4273 | 
| -------- | Entity State MIB | 4268 | 
| -------- | The gopher URI Scheme | 4266 | 
| -------- | Definition of Textual Conventions for Virtual Private Network (VPN) Management | 4265 | 
| -------- | X.509 Certificate Extension for Secure/Multipurpose Internet Mail Extensions (S/MIME) Capabilities | 4262 | 
| -------- | Common Open Policy Service (COPS) Over Transport Layer Security (TLS) | 4261 | 
| -------- | Generic Message Exchange Authentication for the Secure Shell Protocol (SSH) | 4256 | 
| -------- | Using DNS to Securely Publish Secure Shell (SSH) Key Fingerprints | 4255 | 
| -------- | The Secure Shell (SSH) Connection Protocol | 4254 | 
| -------- | The Secure Shell (SSH) Transport Layer Protocol | 4253 | 
| -------- | The Secure Shell (SSH) Authentication Protocol | 4252 | 
| -------- | The Secure Shell (SSH) Protocol Architecture | 4251 | 
| -------- | The Secure Shell (SSH) Protocol Assigned Numbers | 4250 | 
| -------- | The telnet URI Scheme | 4248 | 
| -------- | An Extension to the Session Initiation Protocol (SIP) for Request History Information | 4244 | 
| -------- | Vendor-Specific Information Suboption for the Dynamic Host Configuration Protocol (DHCP) Relay Agent Option | 4243 | 
| -------- | Information Refresh Time Option for Dynamic Host Configuration Protocol for IPv6 (DHCPv6) | 4242 | 
| -------- | Internet Voice Messaging (IVM) | 4239 | 
| -------- | Voice Message Routing Service | 4238 | 
| -------- | Voice Messaging Directory Service | 4237 | 
| -------- | HTTP Adaptation with Open Pluggable Edge Services (OPES) | 4236 | 
| -------- | An INVITE-Initiated Dialog Event Package for the Session Initiation Protocol (SIP) | 4235 | 
| -------- | Integrated Services Digital Network (ISDN) Q.921-User Adaptation Layer | 4233 | 
| -------- | Identifiers and Test Vectors for HMAC-SHA-224, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512 | 4231 | 
| -------- | Using the Simple Object Access Protocol (SOAP) in Blocks Extensible Exchange Protocol (BEEP) | 4227 | 
| -------- | Traffic Engineering Link Management Information Base | 4220 | 
| -------- | Securing FTP with TLS | 4217 | 
| TRANS-IPV6 | Basic Transition Mechanisms for IPv6 Hosts and Routers | 4213 | 
| X.509-CRMF | Internet X.509 Public Key Infrastructure Certificate Request Message Format (CRMF) | 4211 | 
| PKICMP | Internet X.509 Public Key Infrastructure Certificate Management Protocol (CMP) | 4210 | 
| -------- | Link Management Protocol (LMP) for Dense Wavelength Division Multiplexing (DWDM) Optical Line Systems | 4209 | 
| -------- | Generalized Multiprotocol Label Switching (GMPLS) User-Network Interface (UNI): Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) Support for the Overlay Model | 4208 | 
| -------- | Synchronous Optical Network (SONET)/Synchronous Digital Hierarchy (SDH) Encoding for Link Management Protocol (LMP) Test Messages | 4207 | 
| -------- | Label Switched Paths (LSP) Hierarchy with Generalized Multi-Protocol Label Switching (GMPLS) Traffic Engineering (TE) | 4206 | 
| -------- | Link Management Protocol (LMP) | 4204 | 
| -------- | OSPF Extensions in Support of Generalized Multi-Protocol Label Switching (GMPLS) | 4203 | 
| -------- | Routing Extensions in Support of Generalized Multi-Protocol Label Switching (GMPLS) | 4202 | 
| -------- | Link Bundling in MPLS Traffic Engineering (TE) | 4201 | 
| -------- | The SEED Cipher Algorithm and Its Use with IPsec | 4196 | 
| -------- | The S Hexdump Format | 4194 | 
| -------- | Unique Local IPv6 Unicast Addresses | 4193 | 
| -------- | Default Router Preferences and More-Specific Routes | 4191 | 
| BRIDGE-MIB | Definitions of Managed Objects for Bridges | 4188 | 
| -------- | RTP Payload Format for AC-3 Audio | 4184 | 
| -------- | Removing a Restriction on the use of MPLS Explicit NULL | 4182 | 
| -------- | The Simple and Protected Generic Security Service Application Program Interface (GSS-API) Negotiation Mechanism | 4178 | 
| -------- | RTP Payload Format for Uncompressed Video | 4175 | 
| -------- | The IPv4 Dynamic Host Configuration Protocol (DHCP) Option for the Internet Storage Name Service | 4174 | 
| -------- | Bootstrapping Clients using the Internet Small Computer System Interface (iSCSI) Protocol | 4173 | 
| -------- | iFCP - A Protocol for Internet Fibre Channel Storage Networking | 4172 | 
| -------- | Internet Storage Name Service (iSNS) | 4171 | 
| -------- | The Stream Control Transmission Protocol (SCTP) as a Transport for the Session Initiation Protocol (SIP) | 4168 | 
| -------- | Signaling System 7 (SS7) Message Transfer Part 2 (MTP2) - User Peer-to-Peer Adaptation Layer (M2PA) | 4165 | 
| -------- | RObust Header Compression (ROHC): Context Replication for ROHC Profiles | 4164 | 
| -------- | Addition of SEED Cipher Suites to Transport Layer Security (TLS) | 4162 | 
| -------- | Transport Performance Metrics MIB | 4150 | 
| -------- | Definition of Managed Objects for Synthetic Sources for Performance Monitoring Algorithms | 4149 | 
| -------- | TCP-Based Media Transport in the Session Description Protocol (SDP) | 4145 | 
| -------- | Facsimile Using Internet Mail (IFAX) Service of ENUM | 4143 | 
| -------- | Full-mode Fax Profile for Internet Mail (FFPIM) | 4142 | 
| -------- | SMTP and MIME Extensions for Content Conversion | 4141 | 
| -------- | Entity MIB (Version 3) | 4133 | 
| -------- | Management Information Base for Data Over Cable Service Interface Specification (DOCSIS) Cable Modems and Cable Modem Termination Systems for Baseline Privacy Plus | 4131 | 
| -------- | MIME-Based Secure Peer-to-Peer Business Data Interchange Using HTTP, Applicability Statement 2 (AS2) | 4130 | 
| -------- | Digital Private Network Signaling System (DPNSS)/Digital Access Signaling System 2 (DASS 2) Extensions to the IUA Protocol | 4129 | 
| -------- | Protocol Extensions for Support of Diffserv-aware MPLS Traffic Engineering | 4124 | 
| -------- | A Universally Unique IDentifier (UUID) URN Namespace | 4122 | 
| -------- | The Kerberos Version 5 Generic Security Service Application Program Interface (GSS-API) Mechanism: Version 2 | 4121 | 
| KERBEROS | The Kerberos Network Authentication Service (V5) | 4120 | 
| -------- | A Presence-based GEOPRIV Location Object Format | 4119 | 
| -------- | E.164 Number Mapping for the Extensible Provisioning Protocol (EPP) | 4114 | 
| MIB-UDP | Management Information Base for the User Datagram Protocol (UDP) | 4113 | 
| -------- | Electronic Commerce Modeling Language (ECML) Version 2 Specification | 4112 | 
| -------- | Algorithms for Internet Key Exchange version 1 (IKEv1) | 4109 | 
| -------- | Using Cryptographic Message Syntax (CMS) to Protect Firmware Packages | 4108 | 
| -------- | The Use of Galois/Counter Mode (GCM) in IPsec Encapsulating Security Payload (ESP) | 4106 | 
| -------- | Policy Core Extension Lightweight Directory Access Protocol Schema (PCELS) | 4104 | 
| -------- | RTP Payload for Text Conversation | 4103 | 
| -------- | Registration of the text/red MIME Sub-Type | 4102 | 
| -------- | Attaching Meaning to Solicitation Class Keywords | 4095 | 
| -------- | Fast Reroute Extensions to RSVP-TE for LSP Tunnels | 4090 | 
| -------- | Uniform Resource Identifier (URI) Scheme for the Simple Network Management Protocol (SNMP) | 4088 | 
| -------- | IP Tunnel MIB | 4087 | 
| -------- | A Negative Acknowledgement Mechanism for Signaling Compression | 4077 | 
| -------- | Simple Network Time Protocol (SNTP) Configuration Option for DHCPv6 | 4075 | 
| -------- | Protecting Multiple Contents with the Cryptographic Message Syntax (CMS) | 4073 | 
| -------- | Diameter Extensible Authentication Protocol (EAP) Application | 4072 | 
| -------- | Definitions of Managed Object Extensions for Very High Speed Digital Subscriber Lines (VDSL) Using Multiple Carrier Modulation (MCM) Line Coding | 4070 | 
| -------- | Definitions of Managed Object Extensions for Very High Speed Digital Subscriber Lines (VDSL) Using Single Carrier Modulation (SCM) Line Coding | 4069 | 
| -------- | Experimental Message, Extensions, and Error Codes for Mobile IPv4 | 4064 | 
| -------- | RTP Payload Formats for European Telecommunications Standards Institute (ETSI) European Standard ES 202 050, ES 202 211, and ES 202 212 Distributed Speech Recognition Encoding | 4060 | 
| -------- | Use of the RSASSA-PSS Signature Algorithm in Cryptographic Message Syntax (CMS) | 4056 | 
| -------- | Additional Algorithms and Identifiers for RSA Cryptography for use in the Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile | 4055 | 
| -------- | Additional XML Security Uniform Resource Identifiers (URIs) | 4051 | 
| -------- | Fibre Channel Management MIB | 4044 | 
| -------- | Internet X.509 Public Key Infrastructure Permanent Identifier | 4043 | 
| -------- | RTP Payload Format for a 64 kbit/s Transparent Call | 4040 | 
| -------- | Rapid Commit Option for the Dynamic Host Configuration Protocol version 4 (DHCPv4) | 4039 | 
| -------- | Open Pluggable Edge Services (OPES) Callout Protocol (OCP) Core | 4037 | 
| -------- | Management Information Base for Data Over Cable Service Interface Specification (DOCSIS) Cable Modem Termination Systems for Subscriber Management | 4036 | 
| -------- | Protocol Modifications for the DNS Security Extensions | 4035 | 
| -------- | Resource Records for the DNS Security Extensions | 4034 | 
| -------- | DNS Security Introduction and Requirements | 4033 | 
| -------- | Update to the Session Initiation Protocol (SIP) Preconditions Framework | 4032 | 
| -------- | The Authentication Suboption for the Dynamic Host Configuration Protocol (DHCP) Relay Agent Option | 4030 | 
| -------- | Session Timers in the Session Initiation Protocol (SIP) | 4028 | 
| -------- | A Method for Storing IPsec Keying Material in DNS | 4025 | 
| -------- | Encapsulating MPLS in IP or Generic Routing Encapsulation (GRE) | 4023 | 
| MIB-TCP | Management Information Base for the Transmission Control Protocol (TCP) | 4022 | 
| -------- | Registration of Mail and MIME Header Fields | 4021 | 
| -------- | RObust Header Compression (ROHC): Profiles for User Datagram Protocol (UDP) Lite | 4019 | 
| -------- | Finding Internet Small Computer Systems Interface (iSCSI) Targets and Name Servers by Using Service Location Protocol version 2 (SLPv2) | 4018 | 
| -------- | The Eifel Response Algorithm for TCP | 4015 | 
| -------- | Remote Authentication Dial-In User Service (RADIUS) Attributes Suboption for the Dynamic Host Configuration Protocol (DHCP) Relay Agent Information Option | 4014 | 
| -------- | SASLprep: Stringprep Profile for User Names and Passwords | 4013 | 
| -------- | Routing Policy Specification Language next generation (RPSLng) | 4012 | 
| -------- | Policy Based Management MIB | 4011 | 
| -------- | Use of the SEED Encryption Algorithm in Cryptographic Message Syntax (CMS) | 4010 | 
| -------- | Definitions of Managed Objects for Network Address Translators (NAT) | 4008 | 
| -------- | IPv6 Scoped Address Architecture | 4007 | 
| -------- | Diameter Credit-Control Application | 4006 | 
| -------- | Diameter Network Access Server Application | 4005 | 
| -------- | Diameter Mobile IPv4 Application | 4004 | 
| -------- | GMPLS Signaling Procedure for Egress Control | 4003 | 
| -------- | IANA Registration for Enumservice 'web' and 'ft' | 4002 | 
| -------- | Textual Conventions for Internet Network Addresses | 4001 | 
| -------- | Internet Printing Protocol (IPP): Job and Printer Administrative Operations | 3998 | 
| -------- | Internet Printing Protocol (IPP): The 'ippget' Delivery Method for Event Notifications | 3996 | 
| -------- | Internet Printing Protocol (IPP): Event Notifications and Subscriptions | 3995 | 
| -------- | Indication of Message Composition for Instant Messaging | 3994 | 
| -------- | Subscriber-ID Suboption for the Dynamic Host Configuration Protocol (DHCP) Relay Agent Option | 3993 | 
| -------- | Internationalized Resource Identifiers (IRIs) | 3987 | 
| -------- | Using the Internet Registry Information Service (IRIS) over the Blocks Extensible Exchange Protocol (BEEP) | 3983 | 
| -------- | IRIS:  A Domain Registry (dreg) Type for the Internet Registry Information Service (IRIS) | 3982 | 
| -------- | IRIS: The Internet Registry Information Service (IRIS) Core Protocol | 3981 | 
| -------- | T11 Network Address Authority (NAA) Naming Format for iSCSI Node Names | 3980 | 
| -------- | Network News Transfer Protocol (NNTP) | 3977 | 
| -------- | Cryptographically Generated Addresses (CGA) | 3972 | 
| -------- | SEcure Neighbor Discovery (SEND) | 3971 | 
| -------- | A Traffic Engineering (TE) MIB | 3970 | 
| -------- | The tel URI for Telephone Numbers | 3966 | 
| -------- | Network Mobility (NEMO) Basic Support Protocol | 3963 | 
| -------- | Advanced Encryption Standard (AES) Encryption for Kerberos 5 | 3962 | 
| -------- | Encryption and Checksum Specifications for Kerberos 5 | 3961 | 
| -------- | The Early Session Disposition Type for the Session Initiation Protocol (SIP) | 3959 | 
| -------- | Domain-Based Application Service Location Using SRV RRs and the Dynamic Delegation Discovery Service (DDDS) | 3958 | 
| -------- | Authentication, Authorization, and Accounting (AAA) Registration Keys for Mobile IPv4 | 3957 | 
| -------- | Embedding the Rendezvous Point (RP) Address in an IPv6 Multicast Address | 3956 | 
| -------- | Telephone Number Mapping (ENUM) Service Registration for Presence Services | 3953 | 
| -------- | UDP Encapsulation of IPsec ESP Packets | 3948 | 
| -------- | Negotiation of NAT-Traversal in the IKE | 3947 | 
| -------- | Generalized Multi-Protocol Label Switching (GMPLS) Architecture | 3945 | 
| -------- | Reclassifying Dynamic Host Configuration Protocol version 4 (DHCPv4) Options | 3942 | 
| -------- | Calling Line Identification for Voice Mail Messages | 3939 | 
| -------- | Video-Message Message-Context | 3938 | 
| -------- | Layer Two Tunneling Protocol - Version 3 (L2TPv3) | 3931 | 
| -------- | Lightweight Directory Access Protocol (LDAP) Client Update Protocol (LCUP) | 3928 | 
| -------- | Dynamic Configuration of IPv4 Link-Local Addresses | 3927 | 
| -------- | Vendor-Identifying Vendor Options for Dynamic Host Configuration Protocol version 4 (DHCPv4) | 3925 | 
| -------- | End-to-End Signing and Object Encryption for the Extensible Messaging and Presence Protocol (XMPP) | 3923 | 
| -------- | Mapping the Extensible Messaging and Presence Protocol (XMPP) to Common Presence and Instant Messaging (CPIM) | 3922 | 
| -------- | Domain Registry Grace Period Mapping for the Extensible Provisioning Protocol (EPP) | 3915 | 
| -------- | The Session Initiation Protocol (SIP) "Join" Header | 3911 | 
| -------- | The SPIRITS (Services in PSTN requesting Internet Services) Protocol | 3910 | 
| -------- | Lightweight Directory Access Protocol (LDAP) Cancel Operation | 3909 | 
| -------- | Session Initiation Protocol (SIP) Extension for Event State Publication | 3903 | 
| -------- | Network Information Service (NIS) Configuration Options for Dynamic Host Configuration Protocol for IPv6 (DHCPv6) | 3898 | 
| DS3-E3-MIB | Definitions of Managed Objects for the DS3/E3 Interface Type | 3896 | 
| -------- | Sieve Extension: Copying Without Side Effects | 3894 | 
| -------- | Session Initiation Protocol (SIP) Authenticated Identity Body (AIB) Format | 3893 | 
| -------- | The Session Initiation Protocol (SIP) Referred-By Mechanism | 3892 | 
| -------- | The Session Initiation Protocol (SIP) "Replaces" Header | 3891 | 
| -------- | A Transport Independent Bandwidth Modifier for the Session Description Protocol (SDP) | 3890 | 
| -------- | Message Tracking Query Protocol | 3887 | 
| -------- | An Extensible Message Format for Message Tracking Responses | 3886 | 
| -------- | SMTP Service Extension for Message Tracking | 3885 | 
| -------- | Detecting Inactive Neighbors over OSPF Demand Circuits (DC) | 3883 | 
| -------- | Call Processing Language (CPL): A Language for User Control of Internet Telephony Services | 3880 | 
| -------- | Deprecating Site Local Addresses | 3879 | 
| -------- | Alarm Reporting Control Management Information Base (MIB) | 3878 | 
| -------- | Alarm Management Information Base (MIB) | 3877 | 
| -------- | Returning Matched Values with the Lightweight Directory Access Protocol version 3 (LDAPv3) | 3876 | 
| -------- | Stream Control Transmission Protocol (SCTP) Management Information Base (MIB) | 3873 | 
| -------- | Management Information Base for Telephony Routing over IP (TRIP) | 3872 | 
| -------- | Signalling Connection Control Part User Adaptation Layer (SUA) | 3868 | 
| -------- | Language Tags and Ranges in the Lightweight Directory Access Protocol (LDAP) | 3866 | 
| -------- | A No Soliciting Simple Mail Transfer Protocol (SMTP) Service Extension | 3865 | 
| -------- | Presence Information Data Format (PIDF) | 3863 | 
| -------- | Common Presence and Instant Messaging (CPIM): Message Format | 3862 | 
| -------- | Address Resolution for Instant Messaging and Presence | 3861 | 
| -------- | Common Profile for Instant Messaging (CPIM) | 3860 | 
| -------- | Common Profile for Presence (CPP) | 3859 | 
| -------- | An Extensible Markup Language (XML) Based Format for Watcher Information | 3858 | 
| -------- | A Watcher Information Event Template-Package for the Session Initiation Protocol (SIP) | 3857 | 
| -------- | A Presence Event Package for the Session Initiation Protocol (SIP) | 3856 | 
| -------- | Transporting Secure/Multipurpose Internet Mail Extensions (S/MIME) Objects in X.400 | 3855 | 
| -------- | Securing X.400 Content with Secure/Multipurpose Internet Mail Extensions (S/MIME) | 3854 | 
| SIP | S/MIME Advanced Encryption Standard (AES) Requirement for the Session Initiation Protocol (SIP) | 3853 | 
| -------- | Mobile IPv4 Extension for Carrying Network Access Identifiers | 3846 | 
| -------- | RObust Header Compression (ROHC): A Compression Profile for IP | 3843 | 
| -------- | A Message Summary and Message Waiting Indication Event Package for the Session Initiation Protocol (SIP) | 3842 | 
| -------- | Caller Preferences for the Session Initiation Protocol (SIP) | 3841 | 
| -------- | Indicating User Agent Capabilities in the Session Initiation Protocol (SIP) | 3840 | 
| -------- | MIME Type Registrations for 3rd Generation Partnership Project (3GPP) Multimedia files | 3839 | 
| -------- | Recommendations for Automatic Responses to Electronic Mail | 3834 | 
| -------- | MIKEY: Multimedia Internet KEYing | 3830 | 
| -------- | The Lightweight User Datagram Protocol (UDP-Lite) | 3828 | 
| -------- | The Advanced Encryption Standard (AES) Cipher Algorithm in the SNMP User-based Security Model | 3826 | 
| -------- | Finding Fibre Channel over TCP/IP (FCIP) Entities Using Service Location Protocol version 2 (SLPv2) | 3822 | 
| -------- | Fibre Channel Over TCP/IP (FCIP) | 3821 | 
| -------- | Internet X.509 Public Key Infrastructure (PKI) Proxy Certificate Profile | 3820 | 
| -------- | Definitions of Managed Objects for RObust Header Compression (ROHC) | 3816 | 
| -------- | Definitions of Managed Objects for the Multiprotocol Label Switching (MPLS), Label Distribution Protocol (LDP) | 3815 | 
| -------- | Multiprotocol Label Switching (MPLS) Forwarding Equivalence Class To Next Hop Label Forwarding Entry (FEC-To-NHLFE) Management Information Base (MIB) | 3814 | 
| -------- | Multiprotocol Label Switching (MPLS) Label Switching Router (LSR) Management Information Base (MIB) | 3813 | 
| -------- | Multiprotocol Label Switching (MPLS) Traffic Engineering (TE) Management Information Base (MIB) | 3812 | 
| -------- | Definitions of Textual Conventions (TCs) for Multiprotocol Label Switching (MPLS) Management | 3811 | 
| -------- | Multicast Listener Discovery Version 2 (MLDv2) for IPv6 | 3810 | 
| -------- | V5.2-User Adaptation Layer (V5UA) | 3807 | 
| Print-MIB | Printer MIB v2 | 3805 | 
| -------- | Voice Profile for Internet Mail (VPIM) Addressing | 3804 | 
| -------- | Security Considerations for Signaling Transport (SIGTRAN) Protocols | 3788 | 
| -------- | The NewReno Modification to TCP's Fast Recovery Algorithm | 3782 | 
| -------- | X.509 Extensions for IP Addresses and AS Identifiers | 3779 | 
| -------- | Using IPsec to Protect Mobile IPv6 Signaling Between Mobile Nodes and Home Agents | 3776 | 
| -------- | Point-to-Point Protocol (PPP) Vendor Protocol | 3772 | 
| -------- | Securely Available Credentials Protocol | 3767 | 
| -------- | enumservice registration for Session Initiation Protocol (SIP) Addresses-of-Record | 3764 | 
| -------- | Telephone Number Mapping (ENUM) Service Registration for H.323 | 3762 | 
| -------- | Stream Control Transmission Protocol (SCTP) Partial Reliability Extension | 3758 | 
| -------- | Transport Layer Security Protocol Compression Methods | 3749 | 
| PPP-EAP | Extensible Authentication Protocol (EAP) | 3748 | 
| -------- | The Differentiated Services Configuration MIB | 3747 | 
| -------- | MIME Type Registrations for JPEG 2000 (ISO/IEC 15444) | 3745 | 
| -------- | Web Distributed Authoring and Versioning (WebDAV) Access Control Protocol | 3744 | 
| -------- | Internet X.509 Public Key Infrastructure: Qualified Certificates Profile | 3739 | 
| -------- | IANA Guidelines for the Registry of Remote Monitoring (RMON) MIB modules | 3737 | 
| -------- | Stateless Dynamic Host Configuration Protocol (DHCP) Service for IPv6 | 3736 | 
| -------- | Application Performance Measurement MIB | 3729 | 
| -------- | Definitions of Managed Objects for Very High Speed Digital Subscriber Lines (VDSL) | 3728 | 
| -------- | ASN.1 Module Definition for the LDAP and X.500 Component Matching Rules | 3727 | 
| -------- | Securing Block Storage Protocols over IP | 3723 | 
| -------- | String Profile for Internet Small Computer Systems Interface (iSCSI) Names | 3722 | 
| -------- | Internet Small Computer Systems Interface (iSCSI) | 3720 | 
| -------- | The Secure Real-time Transport Protocol (SRTP) | 3711 | 
| -------- | Internet X.509 Public Key Infrastructure: Logotypes in X.509 Certificates | 3709 | 
| -------- | High Capacity Textual Conventions for MIB Modules Using Performance History Based on 15 Minute Intervals | 3705 | 
| -------- | Policy Core Lightweight Directory Access Protocol (LDAP) Schema | 3703 | 
| -------- | Lightweight Directory Access Protocol (LDAP): Additional Matching Rules | 3698 | 
| -------- | Internet Message Access Protocol (IMAP) UNSELECT command | 3691 | 
| -------- | Lightweight Directory Access Protocol (LDAP) and X.500 Component Matching Rules | 3687 | 
| -------- | Using Advanced Encryption Standard (AES) Counter Mode With IPsec Encapsulating Security Payload (ESP) | 3686 | 
| -------- | A Session Initiation Protocol (SIP) Event Package for Registrations | 3680 | 
| -------- | The Text/Plain Format and DelSp Parameters | 3676 | 
| -------- | Lightweight Directory Access Protocol version 3 (LDAPv3): All Operational Attributes | 3673 | 
| -------- | Subentries in the Lightweight Directory Access Protocol (LDAP) | 3672 | 
| -------- | Collective Attributes in the Lightweight Directory Access Protocol (LDAP) | 3671 | 
| -------- | Information Model for Describing Network Device QoS Datapath Mechanisms | 3670 | 
| FTP | Extensions to FTP | 3659 | 
| -------- | Use of the Camellia Encryption Algorithm in Cryptographic Message Syntax (CMS) | 3657 | 
| -------- | Web Distributed Authoring and Versioning (WebDAV) Ordered Collections Protocol | 3648 | 
| -------- | DNS Configuration options for Dynamic Host Configuration Protocol for IPv6 (DHCPv6) | 3646 | 
| -------- | Generic Security Service Algorithm for Secret Key Transaction Authentication for DNS (GSS-TSIG) | 3645 | 
| -------- | Policy Quality of Service (QoS) Information Model | 3644 | 
| -------- | Fibre Channel (FC) Frame Encapsulation | 3643 | 
| -------- | Common Elements of Generic String Encoding Rules (GSER) Encodings | 3642 | 
| -------- | Generic String Encoding Rules (GSER) for ASN.1 Types | 3641 | 
| -------- | RTP Payload Format for Transport of MPEG-4 Elementary Streams | 3640 | 
| -------- | Definitions of Managed Objects for the Ethernet WAN Interface Sublayer | 3637 | 
| -------- | Definitions of Managed Objects for the Ethernet-like Interface Types | 3635 | 
| -------- | Key Distribution Center (KDC) Server Address Sub-option for the Dynamic Host Configuration Protocol (DHCP) CableLabs Client Configuration (CCC) Option | 3634 | 
| -------- | IPv6 Prefix Options for Dynamic Host Configuration Protocol (DHCP) version 6 | 3633 | 
| -------- | Traffic Engineering (TE) Extensions to OSPF Version 2 | 3630 | 
| -------- | Graceful OSPF Restart | 3623 | 
| -------- | Power Ethernet MIB | 3621 | 
| -------- | The TUNNEL Profile | 3620 | 
| -------- | RTP Control Protocol Extended Reports (RTCP XR) | 3611 | 
| -------- | Session Initiation Protocol (SIP) Extension Header Field for Service Route Discovery During Registration | 3608 | 
| -------- | Definitions of Supplemental Managed Objects for ATM Interface | 3606 | 
| -------- | Real Time Control Protocol (RTCP) attribute in Session Description Protocol (SDP) | 3605 | 
| -------- | The AES-CBC Cipher Algorithm and Its Use with IPsec | 3602 | 
| -------- | Text String Notation for Dial Sequences and Global Switched Telephone Network (GSTN) / E.164 Addresses | 3601 | 
| -------- | Handling of Unknown DNS Resource Record (RR) Types | 3597 | 
| -------- | Textual Conventions for IPv6 Flow Label | 3595 | 
| -------- | PacketCable Security Ticket Control Sub-Option for the DHCP CableLabs Client Configuration (CCC) Option | 3594 | 
| -------- | Definitions of Managed Objects for the Optical Interface Type | 3591 | 
| -------- | Source Address Selection for the Multicast Listener Discovery (MLD) Protocol | 3590 | 
| -------- | Diameter Base Protocol | 3588 | 
| -------- | IP Security Policy (IPSP) Requirements | 3586 | 
| -------- | IPsec Configuration Policy Information Model | 3585 | 
| -------- | An Extension to the Session Initiation Protocol (SIP) for Symmetric Response Routing | 3581 | 
| -------- | Mapping of Integrated Services Digital Network (ISDN) User Part (ISUP) Overlap Signalling to the Session Initiation Protocol (SIP) | 3578 | 
| -------- | IANA Considerations for RADIUS (Remote Authentication Dial In User Service) | 3575 | 
| -------- | Signalling of Modem-On-Hold status in Layer 2 Tunneling Protocol (L2TP) | 3573 | 
| -------- | The AES-XCBC-MAC-96 Algorithm and Its Use With IPsec | 3566 | 
| -------- | Use of the Advanced Encryption Standard (AES) Encryption Algorithm in Cryptographic Message Syntax (CMS) | 3565 | 
| -------- | Use of the RSAES-OAEP Key Transport Algorithm in Cryptographic Message Syntax (CMS) | 3560 | 
| -------- | Multicast Address Allocation MIB | 3559 | 
| -------- | RTP Payload Format for Enhanced Variable Rate Codecs (EVRC) and Selectable Mode Vocoders (SMV) | 3558 | 
| -------- | RTP Payload Format for European Telecommunications Standards Institute (ETSI) European Standard ES 201 108 Distributed Speech Recognition Encoding | 3557 | 
| -------- | Session Description Protocol (SDP) Bandwidth Modifiers for RTP Control Protocol (RTCP) Bandwidth | 3556 | 
| -------- | On the Use of Stream Control Transmission Protocol (SCTP) with IPsec | 3554 | 
| -------- | Enhanced Compressed RTP (CRTP) for Links with High Delay, Packet Loss and Reordering | 3545 | 
| IPCOM-PPP | IP Header Compression over PPP | 3544 | 
| -------- | Registration Revocation in Mobile IPv4 | 3543 | 
| -------- | Authentication, Authorization and Accounting (AAA) Transport Profile | 3539 | 
| -------- | Wrapping a Hashed Message Authentication Code (HMAC) key with a Triple-Data Encryption Standard (DES) Key or an Advanced Encryption Standard (AES) Key | 3537 | 
| NFSv4 | Network File System (NFS) version 4 Protocol | 3530 | 
| -------- | Link Selection sub-option for the Relay Agent Information Option for DHCPv4 | 3527 | 
| -------- | More Modular Exponential (MODP) Diffie-Hellman groups for Internet Key Exchange (IKE) | 3526 | 
| -------- | Mapping of Media Streams to Resource Reservation Flows | 3524 | 
| -------- | Session Authorization Policy Element | 3520 | 
| -------- | Mobile IP Traversal of Network Address Translation (NAT) Devices | 3519 | 
| PPP-BCP | Point-to-Point Protocol (PPP) Bridging Control Protocol (BCP) | 3518 | 
| -------- | A Conservative Selective Acknowledgment (SACK)-based Loss Recovery Algorithm for TCP | 3517 | 
| -------- | IMAP4 Binary Content Extension | 3516 | 
| -------- | The Session Initiation Protocol (SIP) Refer Method | 3515 | 
| IPP-E-T | Internet Printing Protocol/1.1: IPP URL Scheme | 3510 | 
| -------- | Message Disposition Notification (MDN) profile for Internet Message Access Protocol (IMAP) | 3503 | 
| -------- | Internet Message Access Protocol (IMAP) - MULTIAPPEND Extension | 3502 | 
| IMAPv4 | INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1 | 3501 | 
| -------- | Definitions of Managed Objects for Synchronous Optical Network (SONET) Linear Automatic Protection Switching (APS) Architectures | 3498 | 
| -------- | RTP Payload Format for Society of Motion Picture and Television Engineers (SMPTE) 292M Video | 3497 | 
| -------- | Dynamic Host Configuration Protocol (DHCP) Option for CableLabs Client Configuration | 3495 | 
| -------- | Punycode: A Bootstring encoding of Unicode for Internationalized Domain Names in Applications (IDNA) | 3492 | 
| -------- | Compressing the Session Initiation Protocol (SIP) | 3486 | 
| -------- | The Session Initiation Protocol (SIP) and Session Description Protocol (SDP) Static Dictionary for Signaling Compression (SigComp) | 3485 | 
| -------- | Default Address Selection for Internet Protocol version 6 (IPv6) | 3484 | 
| -------- | Signalling Unnumbered Links in CR-LDP (Constraint-Routing Label Distribution Protocol) | 3480 | 
| -------- | Fault Tolerance for the Label Distribution Protocol (LDP) | 3479 | 
| -------- | Graceful Restart Mechanism for Label Distribution Protocol | 3478 | 
| -------- | Signalling Unnumbered Links in Resource ReSerVation Protocol - Traffic Engineering (RSVP-TE) | 3477 | 
| -------- | Generalized Multi-Protocol Label Switching (GMPLS) Signaling Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) Extensions | 3473 | 
| -------- | Generalized Multi-Protocol Label Switching (GMPLS) Signaling Constraint-based Routed Label Distribution Protocol (CR-LDP) Extensions | 3472 | 
| -------- | Generalized Multi-Protocol Label Switching (GMPLS) Signaling Functional Description | 3471 | 
| CIM | Policy Core Information Model (PCIM) Extensions | 3460 | 
| -------- | Critical Content Multi-purpose Internet Mail Extensions (MIME) Parameter | 3459 | 
| -------- | Message Context for Internet Mail | 3458 | 
| -------- | Dynamic Host Configuration Protocol (DHCPv4) Configuration of IPsec Tunnel Mode | 3456 | 
| -------- | Preparation of Internationalized Strings ("stringprep") | 3454 | 
| -------- | Time To Live (TTL) Processing in Multi-Protocol Label Switching (MPLS) Networks | 3443 | 
| -------- | The Classless Static Route Option for Dynamic Host Configuration Protocol (DHCP) version 4 | 3442 | 
| -------- | Definitions of Extension Managed Objects for Asymmetric Digital Subscriber Lines | 3440 | 
| -------- | Layer-Two Tunneling Protocol Extensions for PPP Link Control Protocol Negotiation | 3437 | 
| -------- | Transport Layer Security over Stream Control Transmission Protocol | 3436 | 
| -------- | Remote Monitoring MIB Extensions for High Capacity Alarms | 3434 | 
| -------- | Entity Sensor Management Information Base | 3433 | 
| -------- | Network performance measurement with periodic streams | 3432 | 
| -------- | Session Initiation Protocol (SIP) Extension for Instant Messaging | 3428 | 
| -------- | Obsoleting IQUERY | 3425 | 
| -------- | Internet Media Type message/sipfrag | 3420 | 
| -------- | Textual Conventions for Transport Addresses | 3419 | 
| -------- | Zero-byte Support for Bidirectional Reliable Mode (R-mode) in Extended Link-Layer Assisted RObust Header Compression (ROHC) Profile | 3408 | 
| -------- | Session Description Protocol (SDP) Simple Capability Declaration | 3407 | 
| NAPTR | Dynamic Delegation Discovery System (DDDS) Part Four: The Uniform Resource Identifiers (URI) | 3404 | 
| NAPTR | Dynamic Delegation Discovery System (DDDS) Part Three: The Domain Name System (DNS) Database | 3403 | 
| NAPTR | Dynamic Delegation Discovery System (DDDS) Part Two: The Algorithm | 3402 | 
| -------- | Integrated Services Digital Network (ISDN) User Part (ISUP) to Session Initiation Protocol (SIP) Mapping | 3398 | 
| -------- | Dynamic Host Configuration Protocol (DHCP) Domain Search Option | 3397 | 
| -------- | Encoding Long Options in the Dynamic Host Configuration Protocol (DHCPv4) | 3396 | 
| RMON-MIB | Remote Network Monitoring MIB Protocol Identifier Reference Extensions | 3395 | 
| -------- | IP Packet Delay Variation Metric for IP Performance Metrics (IPPM) | 3393 | 
| -------- | Increasing TCP's Initial Window | 3390 | 
| -------- | Real-time Transport Protocol (RTP) Payload for Comfort Noise (CN) | 3389 | 
| IPP-E-T | Internet Printing Protocol (IPP): The 'collection' attribute syntax | 3382 | 
| IPP-E-T | Internet Printing Protocol (IPP): Job Progress Attributes | 3381 | 
| IPP-E-T | Internet Printing Protocol (IPP): Job and Printer Set Operations | 3380 | 
| IGMP | Internet Group Management Protocol, Version 3 | 3376 | 
| -------- | Layer Two Tunneling Protocol "L2TP" Management Information Base | 3371 | 
| -------- | Cryptographic Message Syntax (CMS) Algorithms | 3370 | 
| -------- | The 'go' URI Scheme for the Common Name Resolution Protocol | 3368 | 
| -------- | Common Name Resolution Protocol (CNRP) | 3367 | 
| -------- | Real-time Facsimile (T.38) - image/t38 MIME Sub-type Registration | 3362 | 
| -------- | Dynamic Host Configuration Protocol (DHCP-for-IPv4) Option for Session Initiation Protocol (SIP) Servers | 3361 | 
| -------- | Layer Two Tunnelling Protocol (L2TP) Over ATM Adaptation Layer 5 (AAL5) | 3355 | 
| -------- | Small Computer Systems Interface protocol over the Internet (iSCSI) Requirements and Design Considerations | 3347 | 
| -------- | The Application Exchange (APEX) Option Party Pack, Part Deux! | 3342 | 
| -------- | The Application Exchange (APEX) Access Service | 3341 | 
| -------- | The Application Exchange Core | 3340 | 
| -------- | Date and Time on the Internet: Timestamps | 3339 | 
| -------- | Class Extensions for PPP over Asynchronous Transfer Mode Adaptation Layer 2 | 3337 | 
| -------- | PPP Over Asynchronous Transfer Mode Adaptation Layer 2 (AAL2) | 3336 | 
| -------- | MIME-based Secure Peer-to-Peer Business Data Interchange over the Internet | 3335 | 
| -------- | Signaling System 7 (SS7) Message Transfer Part 2 (MTP2) - User Adaptation Layer | 3331 | 
| -------- | Security Mechanism Agreement for the Session Initiation Protocol (SIP) | 3329 | 
| -------- | Session Initiation Protocol (SIP) Extension Header Field for Registering Non-Adjacent Contacts | 3327 | 
| -------- | The Reason Header Field for the Session Initiation Protocol (SIP) | 3326 | 
| -------- | A Privacy Mechanism for the Session Initiation Protocol (SIP) | 3323 | 
| -------- | Signaling Compression (SigComp) - Extended Operations | 3321 | 
| -------- | Signaling Compression (SigComp) | 3320 | 
| -------- | Dynamic Host Configuration Protocol (DHCPv6) Options for Session Initiation Protocol (SIP) Servers | 3319 | 
| -------- | Dynamic Host Configuration Protocol for IPv6 (DHCPv6) | 3315 | 
| -------- | Integration of Resource Management and Session Initiation Protocol (SIP) | 3312 | 
| -------- | The Session Initiation Protocol (SIP) UPDATE Method | 3311 | 
| -------- | Layer Two Tunneling Protocol (L2TP) Differentiated Services Extension | 3308 | 
| -------- | Allocation Guidelines for IPv6 Multicast Addresses | 3307 | 
| -------- | Unicast-Prefix-based IPv6 Multicast Addresses | 3306 | 
| -------- | Layer Two Tunnelling Protocol (L2TP): ATM access network extensions | 3301 | 
| -------- | Content Negotiation for Messaging Services based on Email | 3297 | 
| -------- | Named Subordinate References in Lightweight Directory Access Protocol (LDAP) Directories | 3296 | 
| -------- | Definitions of Managed Objects for the General Switch Management Protocol (GSMP) | 3295 | 
| -------- | General Switch Management Protocol (GSMP) Packet Encapsulations for Asynchronous Transfer Mode (ATM), Ethernet and Transmission Control Protocol (TCP) | 3293 | 
| -------- | General Switch Management Protocol (GSMP) V3 | 3292 | 
| -------- | Management Information Base for the Differentiated Services Architecture | 3289 | 
| -------- | Remote Monitoring MIB Extensions for Differentiated Services | 3287 | 
| -------- | The VCDIFF Generic Differencing and Compression Data Format | 3284 | 
| -------- | Algorithms and Identifiers for the Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile | 3279 | 
| -------- | Compressed Data Content Type for Cryptographic Message Syntax (CMS) | 3274 | 
| -------- | Remote Network Monitoring Management Information Base for High Capacity Networks | 3273 | 
| -------- | Multi-Protocol Label Switching (MPLS) Support of Differentiated Services | 3270 | 
| SIP | Session Initiation Protocol (SIP)-Specific Event Notification | 3265 | 
| SIP | An Offer/Answer Model with Session Description Protocol (SDP) | 3264 | 
| SIP | Session Initiation Protocol (SIP): Locating SIP Servers | 3263 | 
| SIP | Reliability of Provisional Responses in Session Initiation Protocol (SIP) | 3262 | 
| SIP | SIP: Session Initiation Protocol | 3261 | 
| -------- | The DOCSIS (Data-Over-Cable Service Interface Specifications) Device Class DHCP (Dynamic Host Configuration Protocol) Relay Agent Information Sub-option | 3256 | 
| -------- | Extending Point-to-Point Protocol (PPP) over Synchronous Optical NETwork/Synchronous Digital Hierarchy (SONET/SDH) with virtual concatenation, high order and low order payloads | 3255 | 
| -------- | Versioning Extensions to WebDAV (Web Distributed Authoring and Versioning) | 3253 | 
| -------- | An Expedited Forwarding PHB (Per-Hop Behavior) | 3246 | 
| -------- | Robust Header Compression (ROHC) over PPP | 3241 | 
| -------- | Definitions of Managed Objects for Scheduling Management Operations | 3231 | 
| -------- | Instance Digests in HTTP | 3230 | 
| -------- | Delta encoding in HTTP | 3229 | 
| -------- | DNSSEC and IPv6 A6 aware server/resolver message size requirements | 3226 | 
| -------- | Indicating Resolver Support of DNSSEC | 3225 | 
| SLP | Vendor Extensions for Service Location Protocol, Version 2 | 3224 | 
| -------- | Telephony Routing over IP (TRIP) | 3219 | 
| -------- | LSP Modification Using CR-LDP | 3214 | 
| -------- | Constraint-Based LSP Setup using LDP | 3212 | 
| -------- | RSVP-TE: Extensions to RSVP for LSP Tunnels | 3209 | 
| -------- | SMTP Service Extension for Secure SMTP over Transport Layer Security | 3207 | 
| -------- | The SYS and AUTH POP Response Codes | 3206 | 
| -------- | MIME media types for ISUP and QSIG Objects | 3204 | 
| -------- | DHCP reconfigure extension | 3203 | 
| -------- | Definitions of Managed Objects for Frame Relay Service Level Definitions | 3202 | 
| -------- | Definitions of Managed Objects for Circuit to Interface Translation | 3201 | 
| -------- | Reliable Delivery for syslog | 3195 | 
| -------- | Securing L2TP using IPsec | 3193 | 
| -------- | RTP Payload Format for 12-bit DAT Audio and 20- and 24-bit Linear Sampled Audio | 3190 | 
| -------- | Reuse of CMS Content Encryption Keys | 3185 | 
| -------- | Identity Representation for RSVP | 3182 | 
| -------- | Signaled Preemption Priority Policy Element | 3181 | 
| -------- | Aggregation of RSVP for IPv4 and IPv6 Reservations | 3175 | 
| IPCOMP | IP Payload Compression Protocol (IPComp) | 3173 | 
| -------- | The Addition of Explicit Congestion Notification (ECN) to IP | 3168 | 
| -------- | Definitions of Managed Objects for the Delegation of Management Scripts | 3165 | 
| -------- | RADIUS and IPv6 | 3162 | 
| TSA | Internet X.509 Public Key Infrastructure Time-Stamp Protocol (TSP) | 3161 | 
| PIB | Structure of Policy Provisioning Information (SPPI) | 3159 | 
| MIME-PGP | MIME Security with OpenPGP | 3156 | 
| -------- | PPP Multiplexing | 3153 | 
| -------- | Transmission of IPv6 Packets over IEEE 1394 Networks | 3146 | 
| -------- | L2TP Disconnect Cause Information | 3145 | 
| -------- | Remote Monitoring MIB Extensions for Interface Parameters Monitoring | 3144 | 
| -------- | Per Hop Behavior Identification Codes | 3140 | 
| -------- | The Congestion Manager | 3124 | 
| -------- | Extensions to IPv6 Neighbor Discovery for Inverse Discovery Specification | 3122 | 
| -------- | Authentication for DHCP Messages | 3118 | 
| -------- | Mobile IP Vendor/Organization-Specific Extensions | 3115 | 
| -------- | Service Location Protocol Modifications for IPv6 | 3111 | 
| -------- | RSA/SHA-1 SIGs and RSA KEYs in the Domain Name System (DNS) | 3110 | 
| -------- | Conventions for the use of the Session Description Protocol (SDP) for ATM Bearer Connections | 3108 | 
| SDP | Carrying Label Information in BGP-4 | 3107 | 
| OSPF-NSSA | The OSPF Not-So-Stubby Area (NSSA) Option | 3101 | 
| RSVP | RSVP Cryptographic Authentication -- Updated Message Type Value | 3097 | 
| -------- | RObust Header Compression (ROHC): Framework and four profiles | 3095 | 
| COPS-PR | COPS Usage for Policy Provisioning (COPS-PR) | 3084 | 
| -------- | Mapping the BEEP Core onto TCP | 3081 | 
| BEEP | The Blocks Extensible Exchange Protocol Core | 3080 | 
| -------- | A Link-Layer Tunneling Mechanism for Unidirectional Links | 3077 | 
| -------- | DHC Load Balancing Algorithm | 3074 | 
| L2TP-FR | Layer Two Tunneling Protocol (L2TP) over Frame Relay | 3070 | 
| -------- | An Anycast Prefix for 6to4 Relay Routers | 3068 | 
| -------- | LDAP Password Modify Extended Operation | 3062 | 
| CIM | Policy Core Information Model -- Version 1 Specification | 3060 | 
| SLPv2 | Attribute List Extension for the Service Location Protocol | 3059 | 
| -------- | Connection of IPv6 Domains via IPv4 Clouds | 3056 | 
| -------- | Management Information Base for the PINT Services Architecture | 3055 | 
| -------- | TN3270E Service Location and Session Balancing | 3049 | 
| -------- | DHCP Relay Agent Information Option | 3046 | 
| -------- | Enhancing TCP's Loss Recovery Using Limited Transmit | 3042 | 
| -------- | VCID Notification over ATM link for LDP | 3038 | 
| -------- | MPLS using LDP and ATM VC Switching | 3035 | 
| -------- | Use of Label Switching on Frame Relay Networks Specification | 3034 | 
| -------- | The Assignment of the Information Field and Protocol Identifier in the Q.2941 Generic Identifier and Q.2957 User-to-user Signaling for the Internet Protocol | 3033 | 
| -------- | MPLS Label Stack Encoding | 3032 | 
| MPLS | Multiprotocol Label Switching Architecture | 3031 | 
| -------- | SMTP Service Extensions for Transmission of Large and Binary MIME Messages | 3030 | 
| -------- | Reverse Tunneling for Mobile IP, revised | 3024 | 
| -------- | XML Media Types | 3023 | 
| -------- | Using 31-Bit Prefixes on IPv4 Point-to-Point Links | 3021 | 
| -------- | Definitions of Managed Objects for Monitoring and Controlling the UNI/NNI Multilink Frame Relay Function | 3020 | 
| -------- | XML DTD for Roaming Access Phone Book | 3017 | 
| -------- | Notification Log MIB | 3014 | 
| -------- | The IPv4 Subnet Selection Option for DHCP | 3011 | 
| -------- | Secure Domain Name System (DNS) Dynamic Update | 3007 | 
| -------- | Integrated Services in the Presence of Compressible Flows | 3006 | 
| -------- | The User Class Option for DHCP | 3004 | 
| -------- | The audio/mpeg Media Type | 3003 | 
| -------- | Specification of the Null Service Type | 2997 | 
| -------- | Format of the RSVP DCLASS Object | 2996 | 
| -------- | Registration of Charset and Languages Media Features Tags | 2987 | 
| -------- | Use of the CAST-128 Encryption Algorithm in CMS | 2984 | 
| -------- | Distributed Management Expression MIB | 2982 | 
| -------- | Event MIB | 2981 | 
| -------- | IMAP4 ID extension | 2971 | 
| -------- | RSVP Refresh Overhead Reduction Extensions | 2961 | 
| -------- | Real-Time Transport Protocol Management Information Base | 2959 | 
| -------- | Definitions of Managed Objects for Monitoring and Controlling the Frame Relay/ATM PVC Service Interworking Function | 2955 | 
| FR-MIB | Definitions of Managed Objects for Frame Relay Service | 2954 | 
| -------- | Telnet Encryption: CAST-128 64 bit Cipher Feedback | 2950 | 
| -------- | Telnet Encryption: CAST-128 64 bit Output Feedback | 2949 | 
| -------- | Telnet Encryption: DES3 64 bit Output Feedback | 2948 | 
| -------- | Telnet Encryption: DES3 64 bit Cipher Feedback | 2947 | 
| -------- | Telnet Data Encryption Option | 2946 | 
| -------- | The SRP Authentication and Key Exchange System | 2945 | 
| -------- | Telnet Authentication: SRP | 2944 | 
| -------- | TELNET Authentication Using DSA | 2943 | 
| -------- | Telnet Authentication: Kerberos Version 5 | 2942 | 
| TOPT-AUTH | Telnet Authentication Option | 2941 | 
| -------- | Definitions of Managed Objects for Common Open Policy Service (COPS) Protocol Clients | 2940 | 
| -------- | Identifying Composite Media Features | 2938 | 
| -------- | The Name Service Search Option for DHCP | 2937 | 
| IOTP-HTTP | Internet Open Trading Protocol (IOTP) HTTP Supplement | 2935 | 
| -------- | DNS Request and Transaction Signatures ( SIG(0)s ) | 2931 | 
| TKEY-RR | Secret Key Establishment for DNS (TKEY RR) | 2930 | 
| -------- | List-Id: A Structured Field and Namespace for the Identification of Mailing Lists | 2919 | 
| -------- | Route Refresh Capability for BGP-4 | 2918 | 
| -------- | MIME Content Types in Media Feature Expressions | 2913 | 
| -------- | Indicating Media Features for MIME Content | 2912 | 
| IPP-M-S | Internet Printing Protocol/1.1: Model and Semantics | 2911 | 
| IPP-E-T | Internet Printing Protocol/1.1: Encoding and Transport | 2910 | 
| -------- | MADCAP Multicast Scope Nesting State Option | 2907 | 
| -------- | Router Renumbering for IPv6 | 2894 | 
| -------- | LDAP Control Extension for Server Side Sorting of Search Results | 2891 | 
| -------- | Key and Sequence Number Extensions to GRE | 2890 | 
| SACK | An Extension to the Selective Acknowledgement (SACK) Option for TCP | 2883 | 
| -------- | Content Feature Schema for Internet Fax (V2) | 2879 | 
| -------- | Diffie-Hellman Proof-of-Possession Algorithms | 2875 | 
| -------- | TCP Processing of the IPv4 Precedence Field | 2873 | 
| -------- | Application and Sub Application Identity Policy Element for Use with RSVP | 2872 | 
| -------- | The Inverted Stack Table Extension to the Interfaces Group MIB | 2864 | 
| -------- | RTP Payload Format for Real-Time Pointers | 2862 | 
| -------- | The Use of HMAC-RIPEMD-160-96 within ESP and AH | 2857 | 
| -------- | Textual Conventions for Additional High Capacity Data Types | 2856 | 
| -------- | DHCP for IEEE 1394 | 2855 | 
| -------- | Deliver By SMTP Service Extension | 2852 | 
| LDIF | The LDAP Data Interchange Format (LDIF) - Technical Specification | 2849 | 
| -------- | The PINT Service Protocol: Extensions to SIP and SDP for IP Access to Telephone Call Services | 2848 | 
| LIPKEY | LIPKEY - A Low Infrastructure Public Key Mechanism Using SPKM | 2847 | 
| -------- | GSTN Address Element Extensions in E-mail Services | 2846 | 
| TSIG | Secret Key Transaction Authentication for DNS (TSIG) | 2845 | 
| GSN | IP and ARP over HIPPI-6400 (GSN) | 2835 | 
| -------- | ARP and IP Broadcast over HIPPI-800 | 2834 | 
| -------- | Upgrading to TLS Within HTTP/1.1 | 2817 | 
| -------- | Integrated Service Mappings on IEEE 802 Networks | 2815 | 
| -------- | SBM (Subnet Bandwidth Manager): A Protocol for RSVP-based Admission Control over IEEE 802-style networks | 2814 | 
| -------- | Mobile IP Network Access Identifier Extension for IPv4 | 2794 | 
| -------- | Mail Monitoring MIB | 2789 | 
| -------- | Network Services Monitoring MIB | 2788 | 
| -------- | Definitions of Managed Objects for the Virtual Router Redundancy Protocol | 2787 | 
| GRE | Generic Routing Encapsulation (GRE) | 2784 | 
| DNS-SRV | A DNS RR for specifying the location of services (DNS SRV) | 2782 | 
| RPSL | Routing Policy System Replication | 2769 | 
| -------- | RSVP Extensions for Policy Control | 2750 | 
| -------- | COPS usage for RSVP | 2749 | 
| COPS | The COPS (Common Open Policy Service) Protocol | 2748 | 
| -------- | RSVP Cryptographic Authentication | 2747 | 
| -------- | RSVP Operation Over IP Tunnels | 2746 | 
| -------- | RSVP Diagnostic Messages | 2745 | 
| -------- | Generic Security Service API Version 2 : C-bindings | 2744 | 
| -------- | Generic Security Service Application Program Interface Version 2, Update 1 | 2743 | 
| -------- | Calendar Attributes for vCard and LDAP | 2739 | 
| -------- | Corrections to "A Syntax for Describing Media Feature Sets" | 2738 | 
| -------- | NHRP Support for Virtual Private Networks | 2735 | 
| -------- | IPv4 over IEEE 1394 | 2734 | 
| MADCAP | Multicast Address Dynamic Client Allocation Protocol (MADCAP) | 2730 | 
| -------- | The Transmission of IP Over the Vertical Blanking Interval of a Television Signal | 2728 | 
| -------- | PGP Authentication for RIPE Database Updates | 2726 | 
| -------- | Routing Policy System Security | 2725 | 
| -------- | Traffic Flow Measurement: Meter MIB | 2720 | 
| TLS | Addition of Kerberos Cipher Suites to Transport Layer Security (TLS) | 2712 | 
| -------- | IPv6 Router Alert Option | 2711 | 
| MLD-IPv6 | Multicast Listener Discovery (MLD) for IPv6 | 2710 | 
| -------- | Integrated Services Mappings for Low Speed Networks | 2688 | 
| -------- | PPP in a Real-time Oriented HDLC-like Framing | 2687 | 
| -------- | The Multi-Class Extension to Multi-Link PPP | 2686 | 
| VPNI | Virtual Private Networks Identifier | 2685 | 
| -------- | Multiprotocol Encapsulation over ATM Adaptation Layer 5 | 2684 | 
| -------- | A Round-trip Delay Metric for IPPM | 2681 | 
| -------- | A One-way Packet Loss Metric for IPPM | 2680 | 
| -------- | A One-way Delay Metric for IPPM | 2679 | 
| IPPM-MET | IPPM Metrics for Measuring Connectivity | 2678 | 
| NHRP-MIB | Definitions of Managed Objects for the NBMA Next Hop Resolution Protocol (NHRP) | 2677 | 
| -------- | IPv6 Jumbograms | 2675 | 
| -------- | Non-Terminal DNS Name Redirection | 2672 | 
| EDNS0 | Extension Mechanisms for DNS (EDNS0) | 2671 | 
| -------- | Definitions of Managed Objects for the ADSL Lines | 2662 | 
| L2TP | Layer Two Tunneling Protocol "L2TP" | 2661 | 
| -------- | RTP Payload Format for PureVoice(tm) Audio | 2658 | 
| -------- | CIP Transport Protocols | 2653 | 
| -------- | MIME Object Definitions for the Common Indexing Protocol (CIP) | 2652 | 
| CIP | The Architecture of the Common Indexing Protocol (CIP) | 2651 | 
| ODMR-SMTP | ON-DEMAND MAIL RELAY (ODMR) SMTP with Dynamic IP Addresses | 2645 | 
| -------- | Internationalization of the File Transfer Protocol | 2640 | 
| -------- | Enhanced Security Services for S/MIME | 2634 | 
| -------- | Diffie-Hellman Key Agreement Method | 2631 | 
| -------- | NFS Version 2 and Version 3 Security Issues and the NFS Protocol's Use of RPCSEC_GSS and Kerberos V5 | 2623 | 
| RPSL | Routing Policy Specification Language (RPSL) | 2622 | 
| -------- | PPP over SONET/SDH | 2615 | 
| -------- | DHCP Options for Service Location Protocol | 2610 | 
| -------- | Service Templates and Service: Schemes | 2609 | 
| -------- | Service Location Protocol, Version 2 | 2608 | 
| -------- | Directory Server Monitoring MIB | 2605 | 
| -------- | ILMI-Based Server Discovery for NHRP | 2603 | 
| -------- | ILMI-Based Server Discovery for MARS | 2602 | 
| -------- | ILMI-Based Server Discovery for ATMARP | 2601 | 
| -------- | Assured Forwarding PHB Group | 2597 | 
| -------- | Using TLS with IMAP, POP3 and ACAP | 2595 | 
| -------- | Definitions of Managed Objects for WWW Services | 2594 | 
| -------- | Transmission of IPv6 Packets over Frame Relay Networks Specification | 2590 | 
| LDAPv3 | Lightweight Directory Access Protocol (v3): Extensions for Dynamic Directory Services | 2589 | 
| -------- | Internet X.509 Public Key Infrastructure Operational Protocols: FTP and HTTP | 2585 | 
| -------- | Definitions of Managed Objects for APPN/HPR in IP Networks | 2584 | 
| APP-MIB | Application Management MIB | 2564 | 
| -------- | DHCP Option to Disable Stateless Auto-Configuration in IPv4 Clients | 2563 | 
| TN2370E-RT-MIB | Definitions of Protocol and Managed Objects for TN3270E Response Time Collection Using SMIv2 (TN3270E-RT-MIB) | 2562 | 
| -------- | Base Definitions of Managed Objects for TN3270E Using SMIv2 | 2561 | 
| PKIX | X.509 Internet Public Key Infrastructure Online Certificate Status Protocol - OCSP | 2560 | 
| MHTML | MIME Encapsulation of Aggregate Documents, such as HTML (MHTML) | 2557 | 
| -------- | Use of BGP-4 Multiprotocol Extensions for IPv6 Inter-Domain Routing | 2545 | 
| DHK-DNS | Storage of Diffie-Hellman Keys in the Domain Name System (DNS) | 2539 | 
| -------- | DSA KEYs and SIGs in the Domain Name System (DNS) | 2536 | 
| -------- | Media Features for Display, Print, and Fax | 2534 | 
| -------- | A Syntax for Describing Media Feature Sets | 2533 | 
| -------- | Extended Facsimile Using Internet Mail | 2532 | 
| -------- | Indicating Supported Media Features Using Extensions to DSN and MDN | 2530 | 
| -------- | Transmission of IPv6 over IPv4 Domains without Explicit Tunnels | 2529 | 
| -------- | Reserved IPv6 Subnet Anycast Addresses | 2526 | 
| ATM-MIBMAN | Definitions of Managed Objects for ATM Management | 2515 | 
| ATM-TC-OID | Definitions of Textual Conventions and OBJECT-IDENTITIES for ATM Management | 2514 | 
| -------- | Managed Objects for Controlling the Collection and Storage of Accounting Information for Connection-Oriented Networks | 2513 | 
| -------- | Accounting Information for ATM Networks | 2512 | 
| -------- | Compressing IP/UDP/RTP Headers for Low-Speed Serial Links | 2508 | 
| -------- | IP Header Compression | 2507 | 
| -------- | Transmission of IPv6 Packets over ARCnet Networks | 2497 | 
| -------- | Definitions of Managed Objects for the DS0 and DS0 Bundle Interface Type | 2494 | 
| IPv6ATMNET | IPv6 over ATM Networks | 2492 | 
| IPv6-NBMA | IPv6 over Non-Broadcast Multiple Access (NBMA) networks | 2491 | 
| -------- | DHCP Option for The Open Group's User Authentication Protocol | 2485 | 
| -------- | PPP LCP Internationalization Configuration Option | 2484 | 
| -------- | Gateways and MIME Security Multiparts | 2480 | 
| -------- | Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers | 2474 | 
| -------- | Generic Packet Tunneling in IPv6 Specification | 2473 | 
| -------- | Transmission of IPv6 Packets over Token Ring Networks | 2470 | 
| -------- | Transmission of IPv6 Packets over FDDI Networks | 2467 | 
| -------- | Transmission of IPv6 Packets over Ethernet Networks | 2464 | 
| EBN-MIB | Definitions of Managed Objects for Extended Border Node | 2457 | 
| -------- | Definitions of Managed Objects for APPN TRAPS | 2456 | 
| APPN-MIB | Definitions of Managed Objects for APPN | 2455 | 
| -------- | The ESP CBC-Mode Cipher Algorithms | 2451 | 
| POP3-EXT | POP3 Extension Mechanism | 2449 | 
| OTP-SASL | The One-Time-Password SASL Mechanism | 2444 | 
| -------- | BGP Route Flap Damping | 2439 | 
| -------- | RTP Payload Format for JPEG-compressed Video | 2435 | 
| -------- | RTP Payload Format for BT.656 Video Encoding | 2431 | 
| -------- | FTP Extensions for IPv6 and NATs | 2428 | 
| 3DESE | The PPP Triple-DES Encryption Protocol (3DESE) | 2420 | 
| DESE-bis | The PPP DES Encryption Protocol, Version 2 (DESE-bis) | 2419 | 
| -------- | Definitions of Managed Objects for Multicast over UNI 3.0/3.1 based ATM Networks | 2417 | 
| -------- | The NULL Encryption Algorithm and Its Use With IPsec | 2410 | 
| ESPDES-CBC | The ESP DES-CBC Cipher Algorithm With Explicit IV | 2405 | 
| -------- | The Use of HMAC-SHA-1-96 within ESP and AH | 2404 | 
| -------- | The Use of HMAC-MD5-96 within ESP and AH | 2403 | 
| DATA-URL | The "data" URL scheme | 2397 | 
| CIDMID-URL | Content-ID and Message-ID Uniform Resource Locators | 2392 | 
| -------- | Feature negotiation mechanism for the File Transfer Protocol | 2389 | 
| -------- | Returning Values from Forms: multipart/form-data | 2388 | 
| MIME-RELAT | The MIME Multipart/Related Content-type | 2387 | 
| POP-URL | POP URL Scheme | 2384 | 
| -------- | Interoperation of Controlled-Load Service and Guaranteed Service with ATM | 2381 | 
| -------- | RSVP over ATM Implementation Requirements | 2380 | 
| TIPV3 | Transaction Internet Protocol Version 3.0 | 2371 | 
| -------- | The Use of URLs as Meta-Syntax for Core Mail List Commands and their Transport through Message Header Fields | 2369 | 
| PPP-AAL | PPP Over AAL5 | 2364 | 
| PPP-FUNI | PPP Over FUNI | 2363 | 
| IMAP4NAME | IMAP4 Namespace | 2342 | 
| NHRP-SCSP | A Distributed NHRP Service Using SCSP | 2335 | 
| SCSP | Server Cache Synchronization Protocol (SCSP) | 2334 | 
| -------- | NHRP Protocol Applicability Statement | 2333 | 
| NHRP | NBMA Next Hop Resolution Protocol (NHRP) | 2332 | 
| UNI-SIG | ATM Signalling Support for IP over ATM - UNI Signalling 4.0 Update | 2331 | 
| RTSP | Real Time Streaming Protocol (RTSP) | 2326 | 
| IPOA-MIB | Definitions of Managed Objects for Classical IP and ARP Over ATM Using SMIv2 (IPOA-MIB) | 2320 | 
| DNS-NCACHE | Negative Caching of DNS Queries (DNS NCACHE) | 2308 | 
| OR-ADD | Representing the O/R Address hierarchy in the X.500 Directory Information Tree | 2294 | 
| SUBTABLE | Representing Tables and Subtrees in the X.500 Directory | 2293 | 
| -------- | Mobile-IPv4 Configuration Option for PPP IPCP | 2290 | 
| SLM-APP | Definitions of System-Level Managed Objects for Applications | 2287 | 
| -------- | Definitions of Managed Objects for IEEE 802.12 Repeater Devices | 2266 | 
| RTP-MPEG | RTP Payload Format for MPEG1/MPEG2 Video | 2250 | 
| -------- | Using Domains in LDAP/X.500 Distinguished Names | 2247 | 
| ACAP | ACAP -- Application Configuration Access Protocol | 2244 | 
| OTP-ER | OTP Extended Responses | 2243 | 
| NETWAREIP | NetWare/IP Domain Name and Information | 2242 | 
| DHCP-NDS | DHCP Options for Novell Directory Services | 2241 | 
| HPR-MIB | Definitions of Managed Objects for HPR using SMIv2 | 2238 | 
| DLUR-MIB | Definitions of Managed Objects for DLUR using SMIv2 | 2232 | 
| MIME-EXT | MIME Parameter Value and Encoded Word Extensions: Character Sets, Languages, and Continuations | 2231 | 
| FTPSECEXT | FTP Security Extensions | 2228 | 
| -------- | Simple Hit-Metering and Usage-Limiting for HTTP | 2227 | 
| -------- | IP Broadcast over ATM Networks | 2226 | 
| IP-ATM | Classical IP and ARP over ATM | 2225 | 
| IMAP4LOGIN | IMAP4 Login Referrals | 2221 | 
| -------- | A Common Schema for the Internet White Pages Service | 2218 | 
| -------- | General Characterization Parameters for Integrated Service Network Elements | 2215 | 
| -------- | Integrated Services Management Information Base Guaranteed Service Extensions using SMIv2 | 2214 | 
| -------- | Integrated Services Management Information Base using SMIv2 | 2213 | 
| GQOS | Specification of Guaranteed Quality of Service | 2212 | 
| -------- | Specification of the Controlled-Load Network Element Service | 2211 | 
| RSVP-IS | The Use of RSVP with IETF Integrated Services | 2210 | 
| RSVP-IPSEC | RSVP Extensions for IPSEC Data Flows | 2207 | 
| RSVP-MIB | RSVP Management Information Base using SMIv2 | 2206 | 
| RSVP | Resource ReSerVation Protocol (RSVP) -- Version 1 Functional Specification | 2205 | 
| RPCSEC-GSS | RPCSEC_GSS Protocol Specification | 2203 | 
| RTP-RAD | RTP Payload for Redundant Audio Data | 2198 | 
| IMAPPOPAU | IMAP/POP AUTHorize Extension for Simple Challenge/Response | 2195 | 
| IMAP4MAIL | IMAP4 Mailbox Referrals | 2193 | 
| -------- | Communicating Presentation Information in Internet Messages: The Content-Disposition Header Field | 2183 | 
| DNS-CLAR | Clarifications to the DNS Specification | 2181 | 
| IMAP4-IDLE | IMAP4 IDLE command | 2177 | 
| SLP | Service Location Protocol | 2165 | 
| -------- | Use of an X.500/LDAP directory to support MIXER address mapping | 2164 | 
| DNS-MCGAM | Using the Internet DNS to Distribute MIXER Conformant Global Address Mapping (MCGAM) | 2163 | 
| -------- | Carrying PostScript in X.400 and MIME | 2160 | 
| -------- | A MIME Body Part for FAX | 2159 | 
| -------- | X.400 Image Body Parts | 2158 | 
| -------- | Mapping between X.400 and RFC-822/MIME Message Bodies | 2157 | 
| MIXER | MIXER (Mime Internet X.400 Enhanced Relay): Mapping between X.400 and RFC 822/MIME | 2156 | 
| MAIL-SERV | Mailbox Names for Common Services, Roles and Functions | 2142 | 
| URN-SYNTAX | URN Syntax | 2141 | 
| DNS-UPDATE | Dynamic Updates in the Domain Name System (DNS UPDATE) | 2136 | 
| DC-MIB | Dial Control Management Information Base using SMIv2 | 2128 | 
| ISDN-MIB | ISDN Management Information Base using SMIv2 | 2127 | 
| ITOT | ISO Transport Service on top of TCP (ITOT) | 2126 | 
| BAP-BACP | The PPP Bandwidth Allocation Protocol (BAP) / The PPP Bandwidth Allocation Control Protocol (BACP) | 2125 | 
| VEMMI-URL | VEMMI URL Specification | 2122 | 
| ROUT-ALERT | IP Router Alert Option | 2113 | 
| 802.3-MIB | Definitions of Managed Objects for IEEE 802.3 Repeater Devices using SMIv2 | 2108 | 
| PPP-NBFCP | The PPP NetBIOS Frames Control Protocol (NBFCP) | 2097 | 
| RIP-TRIG | Triggered Extensions to RIP to Support Demand Circuits | 2091 | 
| IMAP4-LIT | IMAP4 non-synchronizing literals | 2088 | 
| IMAP4-QUO | IMAP4 QUOTA extension | 2087 | 
| HMAC-MD5 | HMAC-MD5 IP Authentication with Replay Prevention | 2085 | 
| RIPNG-IPV6 | RIPng for IPv6 | 2080 | 
| URI-ATT | Definition of an X.500 Attribute Type and an Object Class to Hold Uniform Resource Identifiers (URIs) | 2079 | 
| MIME-MODEL | The Model Primary Content Type for Multipurpose Internet Mail Extensions | 2077 | 
| URLZ39.50 | Uniform Resource Locators for Z39.50 | 2056 | 
| SNANAU-APP | Definitions of Managed Objects for APPC using SMIv2 | 2051 | 
| PPP-SNACP | The PPP SNA Control Protocol (SNACP) | 2043 | 
| SMTP-ENH | SMTP Service Extension for Returning Enhanced Error Codes | 2034 | 
| RTP-CELLB | RTP Payload Format of Sun's CellB Video Encoding | 2029 | 
| SPKM | The Simple Public-Key GSS-API Mechanism (SPKM) | 2025 | 
| DLSW-MIB | Definitions of Managed Objects for Data Link Switching using SMIv2 | 2024 | 
| MULTI-UNI | Support for Multicast over UNI 3.0/3.1 based ATM Networks | 2022 | 
| 802.12-MIB | IEEE 802.12 Interface MIB | 2020 | 
| TCP-ACK | TCP Selective Acknowledgment Options | 2018 | 
| URL-ACC | Definition of the URL MIME External-Body Access-Type | 2017 | 
| MIME-PGP | MIME Security with Pretty Good Privacy (PGP) | 2015 | 
| MOBILEIPMIB | The Definitions of Managed Objects for IP Mobility Support using SMIv2 | 2006 | 
| -------- | Applicability Statement for IP Mobility Support | 2005 | 
| MINI-IP | Minimal Encapsulation within IP | 2004 | 
| IPENCAPIP | IP Encapsulation within IP | 2003 | 
| BGP-COMM | BGP Communities Attribute | 1997 | 
| DNS-NOTIFY | A Mechanism for Prompt Notification of Zone Changes (DNS NOTIFY) | 1996 | 
| DNS-IZT | Incremental Zone Transfer in DNS | 1995 | 
| SMTP-ETRN | SMTP Service Extension for Remote Message Queue Starting | 1985 | 
| SNA | Serial Number Arithmetic | 1982 | 
| PPP-FRAME | PPP in Frame Relay | 1973 | 
| PPP-ECP | The PPP Encryption Control Protocol (ECP) | 1968 | 
| GSSAPI-KER | The Kerberos Version 5 GSS-API Mechanism | 1964 | 
| PPP-CCP | The PPP Compression Control Protocol (CCP) | 1962 | 
| GSSAPI-SOC | GSS-API Authentication Method for SOCKS Version 5 | 1961 | 
| AUTH-SOCKS | Username/Password Authentication for SOCKS V5 | 1929 | 
| SOCKSV5 | SOCKS Protocol Version 5 | 1928 | 
| MIME-Encyp | Security Multiparts for MIME: Multipart/Signed and Multipart/Encrypted | 1847 | 
| -------- | Binding Protocols for ONC RPC Version 2 | 1833 | 
| -------- | The ESP DES-CBC Transform | 1829 | 
| -------- | Requirements for IP Version 4 Routers | 1812 | 
| OSPF-DC | Extending OSPF to Support Demand Circuits | 1793 | 
| MIME-EDI | MIME Encapsulation of EDI Objects | 1767 | 
| ATM | ATM Signaling Support for IP over ATM | 1755 | 
| IPNG | The Recommendation for the IP Next Generation Protocol | 1752 | 
| MacMIME | MIME Encapsulation of Macintosh Files - MacMIME | 1740 | 
| IMAP4-AUTH | IMAP4 Authentication Mechanisms | 1731 | 
| RDBMS-MIB | Relational Database Management System (RDBMS) Management Information Base (MIB) using SMIv2 | 1697 | 
| PPP-TRANS | PPP Reliable Transmission | 1663 | 
| PPP-ISDN | PPP over ISDN | 1618 | 
| PPP-X25 | PPP in X.25 | 1598 | 
| RIP-DC | Extensions to RIP to Support Demand Circuits | 1582 | 
| TOPT-ENVIR | Telnet Environment Option | 1572 | 
| PPP-LCP | PPP LCP Extensions | 1570 | 
| PPP/IPMIB | The Definitions of Managed Objects for the IP Network Control Protocol of the Point-to-Point Protocol | 1473 | 
| PPP/SECMIB | The Definitions of Managed Objects for the Security Protocols of the Point-to-Point Protocol | 1472 | 
| PPP/LCPMIB | The Definitions of Managed Objects for the Link Control Protocol of the Point-to-Point Protocol | 1471 | 
| SNMP-IPX | SNMP over IPX | 1420 | 
| IDENT | Identification Protocol | 1413 | 
| SNMP-X.25 | SNMP MIB Extension for the X.25 Packet Layer | 1382 | 
| SNMP-LAPB | SNMP MIB Extension for X.25 LAPB | 1381 | 
| PPP-OSINLCP | The PPP OSI Network Layer Control Protocol (OSINLCP) | 1377 | 
| TOPT-RFC | Telnet Remote Flow Control Option | 1372 | 
| PPP-IPCP | The PPP Internet Protocol Control Protocol (IPCP) | 1332 | 
| TCP-EXT | TCP Extensions for High Performance | 1323 | 
| -------- | Encoding Network Addresses to Support Operation over Non-OSI Lower Layers | 1277 | 
| ICMP-ROUT | ICMP Router Discovery Messages | 1256 | 
| IS-IS | Use of OSI IS-IS for routing in TCP/IP and dual environments | 1195 | 
| IP-CMPRS | Compressing TCP/IP Headers for Low-Speed Serial Links | 1144 | 
| TOPT-XDL | Telnet X display location option | 1096 | 
| TOPT-TERM | Telnet terminal-type option | 1091 | 
| TOPT-TS | Telnet terminal speed option | 1079 | 
| TOPT-NAWS | Telnet window size option | 1073 | 
| TOPT-X.3 | Telnet X.3 PAD option | 1053 | 
| TOPT-DATA | Telnet Data Entry Terminal option: DODIIS implementation | 1043 | 
| TOPT-3270 | Telnet 3270 regime option | 1041 | 
| TOPT-TLN | Telnet terminal location number option | 946 | 
| TOPT-OM | Output marking Telnet option | 933 | 
| TOPT-TACACS | TACACS user identification Telnet option | 927 | 
| TOPT-EOR | Telnet end of record option | 885 | 
| TOPT-SNDL | Telnet send-location option | 779 | 
| TOPT-SUPO | Telnet SUPDUP-Output option | 749 | 
| TOPT-SUP | Telnet SUPDUP option | 736 | 
| TOPT-BYTE | Revised Telnet byte macro option | 735 | 
| TOPT-LOGO | Telnet logout option | 727 | 
| TOPT-REM | Remote Controlled Transmission and Echoing Telnet option | 726 |