| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 6455 | The WebSocket ProtocolI. Fette, A. Melnikov | Proposed Standard | December 2011 |
| 7841 | RFC Streams, Headers, and BoilerplatesJ. Halpern, Ed., L. Daigle, Ed., O. Kolkman, Ed. | Informational | May 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 |
| 8441 | Bootstrapping WebSockets with HTTP/2P. McManus | Proposed Standard | September 2018 |
| 8899 | Packetization Layer Path MTU Discovery for Datagram TransportsG. Fairhurst, T. Jones, M. Tüxen, I. Rüngeler, T. Völker | Proposed Standard | September 2020 |
| 8941 | Structured Field Values for HTTPM. Nottingham, P-H. Kamp · obsoleted by RFC 9651 | Proposed Standard | February 2021 |
| 9000 | QUIC: A UDP-Based Multiplexed and Secure TransportJ. Iyengar, Ed., M. Thomson, Ed. | Proposed Standard | May 2021 |
| 9110 | HTTP SemanticsR. Fielding, Ed., M. Nottingham, Ed., J. Reschke, Ed. | Internet Standard | June 2022 |
| 9112 | HTTP/1.1R. Fielding, Ed., M. Nottingham, Ed., J. Reschke, Ed. | Internet Standard | June 2022 |
| 9113 | HTTP/2M. Thomson, Ed., C. Benfield, Ed. | Proposed Standard | June 2022 |
| 9114 | HTTP/3M. Bishop, Ed. | Proposed Standard | June 2022 |
| 9218 | Extensible Prioritization Scheme for HTTPK. Oku, L. Pardue | Proposed Standard | June 2022 |
| 9220 | Bootstrapping WebSockets with HTTP/3R. Hamilton | Proposed Standard | June 2022 |
| 9221 | An Unreliable Datagram Extension to QUICT. Pauly, E. Kinnear, D. Schinazi | Proposed Standard | March 2022 |
| 9293 | Transmission Control Protocol (TCP)W. Eddy, Ed. | Internet Standard | August 2022 |