| 20 | ASCII format for network interchangeV.G. Cerf | Internet Standard | October 1969 |
| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 4086 | Randomness Requirements for SecurityD. Eastlake 3rd, J. Schiller, S. Crocker | Best Current Practice | June 2005 |
| 5905 | Network Time Protocol Version 4: Protocol and Algorithms SpecificationD. Mills, J. Martin, Ed., J. Burbank, W. Kasch | Proposed Standard | June 2010 |
| 6265 | HTTP State Management MechanismA. Barth | Proposed Standard | April 2011 |
| 6570 | URI TemplateJ. Gregorio, R. Fielding, M. Hadley, M. Nottingham, D. Orchard | Proposed Standard | March 2012 |
| 6838 | Media Type Specifications and Registration ProceduresN. Freed, J. Klensin, T. Hansen | Best Current Practice | January 2013 |
| 7239 | Forwarded HTTP ExtensionA. Petersson, M. Nilsson | Proposed Standard | June 2014 |
| 7748 | Elliptic Curves for SecurityA. Langley, M. Hamburg, S. Turner | Informational | January 2016 |
| 7838 | HTTP Alternative ServicesM. Nottingham, P. McManus, J. Reschke | Proposed Standard | April 2016 |
| 7841 | RFC Streams, Headers, and BoilerplatesJ. Halpern, Ed., L. Daigle, Ed., O. Kolkman, Ed. | Informational | May 2016 |
| 8174 | Ambiguity of Uppercase vs Lowercase in RFC 2119 Key WordsB. Leiba | Best Current Practice | May 2017 |
| 8446 | The Transport Layer Security (TLS) Protocol Version 1.3E. Rescorla · obsoleted by RFC 9846 | Proposed Standard | August 2018 |
| 8470 | Using Early Data in HTTPM. Thomson, M. Nottingham, W. Tarreau | Proposed Standard | September 2018 |
| 8484 | DNS Queries over HTTPS (DoH)P. Hoffman, P. McManus | Proposed Standard | October 2018 |
| 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 |
| 9111 | HTTP CachingR. 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 |
| 9180 | Hybrid Public Key EncryptionR. Barnes, K. Bhargavan, B. Lipp, C. Wood | Informational | February 2022 |
| 9230 | Oblivious DNS over HTTPSE. Kinnear, P. McManus, T. Pauly, T. Verma, C.A. Wood | Experimental | June 2022 |
| 9292 | Binary Representation of HTTP MessagesM. Thomson, C. A. Wood | Proposed Standard | August 2022 |
| 9457 | Problem Details for HTTP APIsM. Nottingham, E. Wilde, S. Dalal | Proposed Standard | July 2023 |