RFC indexes
Every RFC can be grouped by its formal status, the year or decade it was published, the stream that produced it, the IETF area it belongs to, or the official STD/BCP/FYI subseries it is part of. Documents that were revised repeatedly also form a standards lineage, listed below.
Standards lineages
Specifications revised three or more times, from the first version to the one in force today.
- Lightweight Directory Access Protocol (LDAP) Schema Definitions for X.509 Certificates35
- Retirement of the "Internet Official Protocol Standards" Summary Document33
- Assigned Numbers: RFC 1700 is Replaced by an On-line Database25
- HTTP/1.121
- Transmission Control Protocol (TCP)18
- The Transport Layer Security (TLS) Protocol Version 1.315
- TCP Extensions for High Performance13
- Media Type Specifications and Registration Procedures13
- Protocol Modifications for the DNS Security Extensions13
- Summary of Smallberg surveys13
- IAB, IESG, IETF Trust, and IETF LLC Selection, Confirmation, and Recall Process: Operation of the IETF Nominating and Recall Committees11
- The IPv6-Specific MIB Modules Are Obsolete11
- Cryptographic Algorithm Implementation Requirements and Usage Guidance for Encapsulating Security Payload (ESP) and Authentication Header (AH)10
- Simple Mail Transfer Protocol10
- Dynamic Host Configuration Protocol for IPv6 (DHCPv6)9
- Network Time Protocol Version 4: Protocol and Algorithms Specification9
- ARPA Network Mailing Lists9
- Certificate Management over CMS (CMC): Compliance Requirements8
- Stream Control Transmission Protocol8
- Internet Printing Protocol/1.1: Model and Semantics8
- Official Internet protocols8
- File Transfer Protocol8
- Network Host Status8
- Network host status8
- RFC Editor Model (Version 3)7
- Retiring the Tao of the IETF7
- Internet Key Exchange Protocol Version 2 (IKEv2)7
- SIP-Specific Event Notification7
- MIXER (Mime Internet X.400 Enhanced Relay): Mapping between X.400 and RFC 822/MIME7
- The Point-to-Point Protocol (PPP)7
- Proffered Official Initial Connection Protocol7
- Internet X.509 Public Key Infrastructure -- HTTP Transfer for the Certificate Management Protocol (CMP)6
- OpenPGP6
- Session Description Protocol (SDP) Offer/Answer Procedures for Interactive Connectivity Establishment (ICE)6
- Message Header Field for Indicating Message Authentication Status6
- Special-Purpose IP Address Registries6
- Cryptographic Message Syntax (CMS)6
- Tags for Identifying Languages6
- Toll Quality Voice - 32 kbit/s Adaptive Differential Pulse Code Modulation (ADPCM) MIME Sub-type Registration6
- Dynamic Delegation Discovery System (DDDS) Part Four: The Uniform Resource Identifiers (URI)6
- The 'text/html' Media Type6
- DHCP Options and BOOTP Vendor Extensions6
- Domain-Based Message Authentication, Reporting, and Conformance (DMARC) Failure Reporting5
- Internet Message Access Protocol (IMAP) - Version 4rev25
- Detecting Multiprotocol Label Switched (MPLS) Data-Plane Failures5
- Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised)5
- RFC Style Guide5
- Internet Small Computer System Interface (iSCSI) Protocol (Consolidated)5
- Formally Deprecating Some IPv4 Options5
- Netnews Architecture and Protocols5
- Internet Message Format5
- Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile5
- Reclassification of RFC 3525 to Historic5
- Definitions of Managed Objects for IEEE 802.3 Medium Attachment Units (MAUs)5
- Definitions of Managed Objects for the DS1, J1, E1, DS2, and E2 Interface Types5
- OSPF Version 2 Management Information Base5
- Applicability Statement for Reclassification of RFC 1643 to Historic Status5
- Coexistence between Version 1, Version 2, and Version 3 of the Internet-standard Network Management Framework5
- FYI on Questions and Answers - Answers to Commonly Asked "New Internet User" Questions5
- OSPF Version 25
- Post Office Protocol - Version 35
- NADF Standing Documents: A Brief Overview5
- Internet numbers5
- Domain names - implementation and specification5
- Request For Comments reference guide5
- Network Host Status5
- Virtual Router Redundancy Protocol (VRRP) Version 3 for IPv4 and IPv64
- Locator/ID Separation Protocol (LISP) Control Plane4
- Deprecating Infrastructure "int" Domains4
- SDP: Session Description Protocol4
- Structure of the IETF Administrative Support Activity, Version 2.04
- Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Message Specification4
- Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling4
- The JavaScript Object Notation (JSON) Data Interchange Format4
- Intellectual Property Rights in IETF Technology4
- Uniform Resource Names (URNs)4
- PKCS #1: RSA Cryptography Specifications Version 2.24
- Guidelines and Registration Procedures for URI Schemes4
- The Internet Numbers Registry System4
- Entity MIB (Version 4)4
- Domain Name System (DNS) IANA Considerations4
- Overview and Framework for Internationalized Email4
- DomainKeys Identified Mail (DKIM) Signatures4
- vCard Format Specification4
- IANA Registration of Enumservices: Guide, Template, and IANA Considerations4
- IP Mobility Support for IPv4, Revised4
- Internationalized Domain Names in Applications (IDNA): Protocol4
- Basic Forward Error Correction (FEC) Schemes4
- Rights Contributors Provide to the IETF Trust4
- Negotiation for IPv6 Datagram Compression Using IPv6 Control Protocol4
- IP Version 6 Addressing Architecture4
- Definitions of Managed Objects for Bridges4
- Uniform Resource Identifier (URI): Generic Syntax4
- Definitions of Managed Objects for the DS3/E3 Interface Type4
- Definitions of Managed Objects for the Ethernet-like Interface Types4
- Point-to-Point Protocol (PPP) Bridging Control Protocol (BCP)4
- View-based Access Control Model (VACM) for the Simple Network Management Protocol (SNMP)4
- User-based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3)4
- Simple Network Management Protocol (SNMP) Applications4
- Message Processing and Dispatching for the Simple Network Management Protocol (SNMP)4
- An Architecture for Describing Simple Network Management Protocol (SNMP) Management Frameworks4
- The Interfaces Group MIB4
- The Internet Standards Process -- Revision 34
- Requirements for IP Version 4 Routers4
- Application of the Border Gateway Protocol in the Internet4
- Privacy Enhancement for Internet Electronic Mail: Part I: Message Encryption and Authentication Procedures4
- The Finger User Information Protocol4
- Host extensions for IP multicasting4
- NETRJS Protocol4
- IETF Community Moderation3
- Common YANG Data Types3
- Guidelines for Authors and Reviewers of Documents Containing YANG Data Models3
- DNSSEC Cryptographic Algorithm Recommendation Update Process3
- Group Key Management Using the Internet Key Exchange Protocol Version 2 (IKEv2)3
- IMAP Support for UTF-83
- Distribution of Link-State and Traffic Engineering Information Using BGP3
- IANA Considerations and IETF Protocol and Documentation Usage for IEEE 802 Parameters3
- DNS Terminology3
- PIM Message Type Space Extension and Reserved Bits3
- Internet X.509 Public Key Infrastructure: Logotypes in X.509 Certificates3
- Nominating Committee Eligibility3
- Additional XML Security Uniform Resource Identifiers (URIs)3
- The Datagram Transport Layer Security (DTLS) Protocol Version 1.33
- HTTP/23
- CBOR Object Signing and Encryption (COSE): Initial Algorithms3
- The BGP Tunnel Encapsulation Attribute3
- Deprecating TLS 1.0 and TLS 1.13
- Temporary Address Extensions for Stateless Address Autoconfiguration in IPv63
- The Babel Routing Protocol3
- Dissemination of Flow Specification Rules3
- Secret Key Transaction Authentication for DNS (TSIG)3
- Restart Signaling for IS-IS3
- Traversal Using Relays around NAT (TURN): Relay Extensions to Session Traversal Utilities for NAT (STUN)3
- Resource Public Key Infrastructure (RPKI) Trust Anchor Locator3
- IPv6 Node Requirements3
- Session Traversal Utilities for NAT (STUN)3
- Generic Security Service API Version 2: Java Bindings Update3
- Preparation, Enforcement, and Comparison of Internationalized Strings Representing Usernames and Passwords3
- PRECIS Framework: Preparation, Enforcement, and Comparison of Internationalized Strings in Application Protocols3
- Uniform Resource Name (URN) Namespace Registration Transition3
- Internet Protocol, Version 6 (IPv6) Specification3
- Guidelines for Writing an IANA Considerations Section in RFCs3
- IPv6 Router Advertisement Options for DNS Configuration3
- Message Disposition Notification3
- Pseudowire Setup and Maintenance Using the Label Distribution Protocol (LDP)3
- The "xml2rfc" Version 3 Vocabulary3
- The Incident Object Description Exchange Format Version 23
- IP/ICMP Translation Algorithm3
- DNS Root Name Service Protocol and Deployment Requirements3
- The Network Access Identifier3
- Network File System (NFS) Version 4 Protocol3
- Deprecating the Anycast Prefix for 6to4 Relay Routers3
- XML Media Types3
- IMAP Extensions: Quick Flag Changes Resynchronization (CONDSTORE) and Quick Mailbox Resynchronization (QRESYNC)3
- X.509 Internet Public Key Infrastructure Online Certificate Status Protocol - OCSP3
- Extension Mechanisms for DNS (EDNS(0))3
- DNSSEC Operational Practices, Version 23
- Internet Engineering Task Force and International Telecommunication Union - Telecommunication Standardization Sector Collaboration Guidelines3
- Diameter Base Protocol3
- Deprecate DES, RC4-HMAC-EXP, and Other Weak Cryptographic Algorithms in Kerberos3
- The NewReno Modification to TCP's Fast Recovery Algorithm3
- Dual-Stack Hosts Using "Bump-in-the-Host" (BIH)3
- The Multipart/Report Media Type for the Reporting of Mail System Administrative Messages3
- Message Submission for Mail3
- IANA Rules for MIKEY (Multimedia Internet KEYing)3
- HTTP State Management Mechanism3
- SMTP Service Extension for 8-bit MIME Transport3
- MD4 to Historic Status3
- IANA Guidelines for IPv4 Multicast Address Assignments3
- Extensible Provisioning Protocol (EPP) Transport over TCP3
- Extensible Provisioning Protocol (EPP) Contact Mapping3
- Extensible Provisioning Protocol (EPP) Host Mapping3
- Extensible Provisioning Protocol (EPP) Domain Name Mapping3
- Extensible Provisioning Protocol (EPP)3
- TCP Congestion Control3
- Mobile IPv6 Fast Handovers3
- Multicast Group Membership Discovery MIB3
- Capabilities Advertisement with BGP-43
- Sieve Email Filtering: Reject and Extended Reject Extensions3
- Augmented BNF for Syntax Specifications: ABNF3
- RTP Payload Format for Generic Forward Error Correction3
- Autonomous System Confederations for BGP3
- IPv6 Stateless Address Autoconfiguration3
- Neighbor Discovery for IP version 6 (IPv6)3
- Media Type Registration of Payload Formats in the RTP Profile for Audio and Video Conferences3
- Multiprotocol Extensions for BGP-43
- The Kerberos V5 ("GSSAPI") Simple Authentication and Security Layer (SASL) Mechanism3
- Definition of Events for Modem, Fax, and Text Telephony Signals3
- Classless Inter-domain Routing (CIDR): The Internet Address Assignment and Aggregation Plan3
- BGP Route Reflection: An Alternative to Full Mesh Internal BGP (IBGP)3
- Internet Control Message Protocol (ICMPv6) for the Internet Protocol Version 6 (IPv6) Specification3
- Transmission of IPv6, IPv4, and Address Resolution Protocol (ARP) Packets over Fibre Channel3
- Security Architecture for the Internet Protocol3
- IP Forwarding Table MIB3
- Definitions of Managed Objects for BGP-43
- A Border Gateway Protocol 4 (BGP-4)3
- The gopher URI Scheme3
- Basic Transition Mechanisms for IPv6 Hosts and Routers3
- Textual Conventions for Internet Network Addresses3
- WHOIS Protocol Specification3
- 6bone (IPv6 Testing Address Allocation) Phaseout3
- UTF-8, a transformation format of ISO 106463
- DNS Extensions to Support IP Version 63
- Definitions of Managed Objects for the Synchronous Optical Network/Synchronous Digital Hierarchy (SONET/SDH) Interface Type3
- IPv6 Global Unicast Address Format3
- Basic Socket Interface Extensions for IPv63
- Management Information Base (MIB) for the Simple Network Management Protocol (SNMP)3
- Transport Mappings for the Simple Network Management Protocol (SNMP)3
- Version 2 of the Protocol Operations for the Simple Network Management Protocol (SNMP)3
- Definitions of Managed Objects for Frame Relay Service3
- Telnet Authentication Option3
- SMTP Service Extension for Command Pipelining3
- RADIUS Accounting3
- Remote Authentication Dial In User Service (RADIUS)3
- Charter of the Internet Architecture Board (IAB)3
- Remote Network Monitoring Management Information Base3
- Mail Monitoring MIB3
- Network Services Monitoring MIB3
- Generic Security Service Application Program Interface Version 2, Update 13
- Conformance Statements for SMIv23
- Textual Conventions for SMIv23
- Structure of Management Information Version 2 (SMIv2)3
- Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers3
- RIP Version 23
- Multiprotocol Interconnect over Frame Relay3
- The MIME Multipart/Related Content-type3
- Classical IP and ARP over ATM3
- U.S. Government Internet Domain Names3
- Dynamic Host Configuration Protocol3
- X.500 Implementations Catalog-963
- Definitions of Managed Objects for IEEE 802.3 Repeater Devices using SMIv23
- Address Allocation for Private Internets3
- The text/enriched MIME Content-type3
- SMTP Service Extension for Message Size Declaration3
- Simple Network Paging Protocol - Version 3 -Two-Way Enhanced3
- IEEE 802.5 MIB using SMIv23
- DNS NSAP Resource Records3
- Novell IPX Over Various WAN Media (IPXWAN)3
- An Echo Function for CLNP (ISO 8473)3
- SNMP over OSI3
- Identification Protocol3
- Border Gateway Protocol 3 (BGP-3)3
- Interactive Mail Access Protocol: Version 33
- Simple Network Management Protocol (SNMP)3
- Telnet terminal-type option3
- PCMAIL: A distributed mail system for personal computers3
- DoD Internet host table specification3
- ARPANET 1822L Host Access Protocol3
- IMP/TIP memory retrofit schedule (rev 2)3
- Status of the Release of the New IMP System (2600)3
- Revision of the Mail Box Protocol3
- M.I.T3
Status
The formal maturity of each RFC.
Subseries
Official STD, BCP and FYI numbers.
Year
RFCs published in a single year.
- 19681
- 196925
- 197058
- 1971182
- 1972134
- 1973162
- 197460
- 197524
- 197611
- 197720
- 19788
- 19797
- 198017
- 198129
- 198237
- 198349
- 198439
- 198541
- 198624
- 198742
- 198846
- 198952
- 199057
- 199195
- 199295
- 1993175
- 1994185
- 1995131
- 1996170
- 1997192
- 1998234
- 1999259
- 2000279
- 2001193
- 2002216
- 2003235
- 2004282
- 2005328
- 2006459
- 2007320
- 2008290
- 2009286
- 2010363
- 2011390
- 2012338
- 2013275
- 2014327
- 2015300
- 2016310
- 2017263
- 2018208
- 2019180
- 2020209
- 2021240
- 2022194
- 2023173
- 2024175
- 2025208
- 2026126
Decade
RFCs grouped by decade.
Stream
The organisational source of the document.
Area
IETF area responsible for the work.