| 793 | Transmission Control ProtocolJ. Postel · obsoleted by RFC 9293 | Internet Standard | September 1981 |
| 1808 | Relative Uniform Resource LocatorsR. Fielding · obsoleted by RFC 3986 | Proposed Standard | June 1995 |
| 1919 | Classical versus Transparent IP ProxiesM. Chatel | Informational | March 1996 |
| 1945 | Hypertext Transfer Protocol -- HTTP/1.0T. Berners-Lee, R. Fielding, H. Frystyk | Informational | May 1996 |
| 1950 | ZLIB Compressed Data Format Specification version 3.3P. Deutsch, J-L. Gailly | Informational | May 1996 |
| 1951 | DEFLATE Compressed Data Format Specification version 1.3P. Deutsch | Informational | May 1996 |
| 1952 | GZIP file format specification version 4.3P. Deutsch | Informational | May 1996 |
| 2045 | Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message BodiesN. Freed, N. Borenstein | Draft Standard | November 1996 |
| 2047 | MIME (Multipurpose Internet Mail Extensions) Part Three: Message Header Extensions for Non-ASCII TextK. Moore | Draft Standard | November 1996 |
| 2068 | Hypertext Transfer Protocol -- HTTP/1.1R. Fielding, J. Gettys, J. Mogul, H. Frystyk, T. Berners-Lee · obsoleted by RFC 2616 | Proposed Standard | January 1997 |
| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 2145 | Use and Interpretation of HTTP Version NumbersJ. C. Mogul, R. Fielding, J. Gettys, H. Frystyk · obsoleted by RFC 7230 | Informational | May 1997 |
| 2616 | Hypertext Transfer Protocol -- HTTP/1.1R. Fielding, J. Gettys, J. Mogul, H. Frystyk, L. Masinter, P. Leach, T. Berners-Lee · obsoleted by RFC 7230, RFC 7231, RFC 7232, RFC 7233, RFC 7234, RFC 7235 | Draft Standard | June 1999 |
| 2817 | Upgrading to TLS Within HTTP/1.1R. Khare, S. Lawrence | Proposed Standard | May 2000 |
| 2818 | HTTP Over TLSE. Rescorla · obsoleted by RFC 9110 | Informational | May 2000 |
| 3040 | Internet Web Replication and Caching TaxonomyI. Cooper, I. Melve, G. Tomlinson | Informational | January 2001 |
| 3864 | Registration Procedures for Message Header FieldsG. Klyne, M. Nottingham, J. Mogul | Best Current Practice | September 2004 |
| 3986 | Uniform Resource Identifier (URI): Generic SyntaxT. Berners-Lee, R. Fielding, L. Masinter | Internet Standard | January 2005 |
| 4033 | DNS Security Introduction and RequirementsR. Arends, R. Austein, M. Larson, D. Massey, S. Rose | Proposed Standard | March 2005 |
| 4395 | Guidelines and Registration Procedures for New URI SchemesT. Hansen, T. Hardie, L. Masinter · obsoleted by RFC 7595 | Best Current Practice | February 2006 |
| 4559 | SPNEGO-based Kerberos and NTLM HTTP Authentication in Microsoft WindowsK. Jaganathan, L. Zhu, J. Brezak | Informational | June 2006 |
| 5226 | Guidelines for Writing an IANA Considerations Section in RFCsT. Narten, H. Alvestrand · obsoleted by RFC 8126 | Best Current Practice | May 2008 |
| 5234 | Augmented BNF for Syntax Specifications: ABNFD. Crocker, Ed., P. Overell | Internet Standard | January 2008 |
| 5246 | The Transport Layer Security (TLS) Protocol Version 1.2T. Dierks, E. Rescorla · obsoleted by RFC 8446, RFC 9846 | Proposed Standard | August 2008 |
| 5322 | Internet Message FormatP. Resnick, Ed. | Draft Standard | October 2008 |
| 5741 | RFC Streams, Headers, and BoilerplatesL. Daigle, Ed., O. Kolkman, Ed., IAB · obsoleted by RFC 7841 | Informational | December 2009 |
| 6265 | HTTP State Management MechanismA. Barth | Proposed Standard | April 2011 |
| 6585 | Additional HTTP Status CodesM. Nottingham, R. Fielding | Proposed Standard | April 2012 |
| 6838 | Media Type Specifications and Registration ProceduresN. Freed, J. Klensin, T. Hansen | Best Current Practice | January 2013 |
| 7231 | Hypertext Transfer Protocol (HTTP/1.1): Semantics and ContentR. Fielding, Ed., J. Reschke, Ed. · obsoleted by RFC 9110 | Proposed Standard | June 2014 |
| 7232 | Hypertext Transfer Protocol (HTTP/1.1): Conditional RequestsR. Fielding, Ed., J. Reschke, Ed. · obsoleted by RFC 9110 | Proposed Standard | June 2014 |
| 7233 | Hypertext Transfer Protocol (HTTP/1.1): Range RequestsR. Fielding, Ed., Y. Lafon, Ed., J. Reschke, Ed. · obsoleted by RFC 9110 | Proposed Standard | June 2014 |
| 7234 | Hypertext Transfer Protocol (HTTP/1.1): CachingR. Fielding, Ed., M. Nottingham, Ed., J. Reschke, Ed. · obsoleted by RFC 9111 | Proposed Standard | June 2014 |
| 7235 | Hypertext Transfer Protocol (HTTP/1.1): AuthenticationR. Fielding, Ed., J. Reschke, Ed. · obsoleted by RFC 9110 | Proposed Standard | June 2014 |