| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 2833 | RTP Payload for DTMF Digits, Telephony Tones and Telephony SignalsH. Schulzrinne, S. Petrack · obsoleted by RFC 4733, RFC 4734 | Proposed Standard | May 2000 |
| 3261 | SIP: Session Initiation ProtocolJ. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, J. Peterson, R. Sparks, M. Handley, E. Schooler | Proposed Standard | July 2002 |
| 3262 | Reliability of Provisional Responses in Session Initiation Protocol (SIP)J. Rosenberg, H. Schulzrinne | Proposed Standard | July 2002 |
| 3688 | The IETF XML RegistryM. Mealling | Best Current Practice | January 2004 |
| 4568 | Session Description Protocol (SDP) Security Descriptions for Media StreamsF. Andreasen, M. Baugher, D. Wing | Proposed Standard | July 2006 |
| 4585 | Extended RTP Profile for Real-time Transport Control Protocol (RTCP)-Based Feedback (RTP/AVPF)J. Ott, S. Wenger, N. Sato, C. Burmeister, J. Rey | Proposed Standard | July 2006 |
| 4733 | RTP Payload for DTMF Digits, Telephony Tones, and Telephony SignalsH. Schulzrinne, T. Taylor | Proposed Standard | December 2006 |
| 4855 | Media Type Registration of RTP Payload FormatsS. Casner | Proposed Standard | February 2007 |
| 4961 | Symmetric RTP / RTP Control Protocol (RTCP)D. Wing | Best Current Practice | July 2007 |
| 5246 | The Transport Layer Security (TLS) Protocol Version 1.2T. Dierks, E. Rescorla · obsoleted by RFC 8446, RFC 9846 | Proposed Standard | August 2008 |
| 5764 | Datagram Transport Layer Security (DTLS) Extension to Establish Keys for the Secure Real-time Transport Protocol (SRTP)D. McGrew, E. Rescorla | Proposed Standard | May 2010 |
| 6020 | YANG - A Data Modeling Language for the Network Configuration Protocol (NETCONF)M. Bjorklund, Ed. | Proposed Standard | October 2010 |
| 6241 | Network Configuration Protocol (NETCONF)R. Enns, Ed., M. Bjorklund, Ed., J. Schoenwaelder, Ed., A. Bierman, Ed. | Proposed Standard | June 2011 |
| 6665 | SIP-Specific Event NotificationA.B. Roach | Proposed Standard | July 2012 |
| 6716 | Definition of the Opus Audio CodecJM. Valin, K. Vos, T. Terriberry | Proposed Standard | September 2012 |
| 6749 | The OAuth 2.0 Authorization FrameworkD. Hardt, Ed. | Proposed Standard | October 2012 |
| 7033 | WebFingerP. Jones, G. Salgueiro, M. Jones, J. Smarr | Proposed Standard | September 2013 |
| 7092 | A Taxonomy of Session Initiation Protocol (SIP) Back-to-Back User AgentsH. Kaplan, V. Pascual | Informational | December 2013 |
| 7317 | A YANG Data Model for System ManagementA. Bierman, M. Bjorklund | Proposed Standard | August 2014 |
| 7362 | Latching: Hosted NAT Traversal (HNT) for Media in Real-Time CommunicationE. Ivov, H. Kaplan, D. Wing | Informational | September 2014 |
| 7841 | RFC Streams, Headers, and BoilerplatesJ. Halpern, Ed., L. Daigle, Ed., O. Kolkman, Ed. | Informational | May 2016 |
| 7950 | The YANG 1.1 Data Modeling LanguageM. Bjorklund, Ed. | Proposed Standard | August 2016 |
| 8126 | Guidelines for Writing an IANA Considerations Section in RFCsM. Cotton, B. Leiba, T. Narten | Best Current Practice | June 2017 |
| 8174 | Ambiguity of Uppercase vs Lowercase in RFC 2119 Key WordsB. Leiba | Best Current Practice | May 2017 |
| 8340 | YANG Tree DiagramsM. Bjorklund, L. Berger, Ed. | Best Current Practice | March 2018 |
| 8446 | The Transport Layer Security (TLS) Protocol Version 1.3E. Rescorla · obsoleted by RFC 9846 | Proposed Standard | August 2018 |
| 8555 | Automatic Certificate Management Environment (ACME)R. Barnes, J. Hoffman-Andrews, D. McCarney, J. Kasten | Proposed Standard | March 2019 |
| 8792 | Handling Long Lines in Content of Internet-Drafts and RFCsK. Watsen, E. Auerswald, A. Farrel, Q. Wu | Informational | June 2020 |
| 9110 | HTTP SemanticsR. Fielding, Ed., M. Nottingham, Ed., J. Reschke, Ed. | Internet Standard | June 2022 |
| 9114 | HTTP/3M. Bishop, Ed. | Proposed Standard | June 2022 |
| 9409 | The 'sip-trunking-capability' Link Relation TypeK. Inamdar, S. Narayanan, D. Engi, G. Salgueiro | Informational | July 2023 |
| 9645 | YANG Groupings for TLS Clients and TLS ServersK. Watsen | Proposed Standard | October 2024 |
| 9911 | Common YANG Data TypesJ. Schönwälder, Ed. | Proposed Standard | December 2025 |