| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 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 |
| 2617 | HTTP Authentication: Basic and Digest Access AuthenticationJ. Franks, P. Hallam-Baker, J. Hostetler, S. Lawrence, P. Leach, A. Luotonen, L. Stewart · obsoleted by RFC 7235, RFC 7615, RFC 7616, RFC 7617 | Draft Standard | June 1999 |
| 2818 | HTTP Over TLSE. Rescorla · obsoleted by RFC 9110 | Informational | May 2000 |
| 3023 | XML Media TypesM. Murata, S. St. Laurent, D. Kohn · obsoleted by RFC 7303 | Proposed Standard | January 2001 |
| 3261 | SIP: Session Initiation ProtocolJ. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, J. Peterson, R. Sparks, M. Handley, E. Schooler | Proposed Standard | July 2002 |
| 3688 | The IETF XML RegistryM. Mealling | Best Current Practice | January 2004 |
| 3958 | Domain-Based Application Service Location Using SRV RRs and the Dynamic Delegation Discovery Service (DDDS)L. Daigle, A. Newton | Proposed Standard | January 2005 |
| 4582 | The Binary Floor Control Protocol (BFCP)G. Camarillo, J. Ott, K. Drage · obsoleted by RFC 8855 | Proposed Standard | November 2006 |
| 4732 | Internet Denial-of-Service ConsiderationsM. Handley, Ed., E. Rescorla, Ed., IAB | Informational | December 2006 |
| 5226 | Guidelines for Writing an IANA Considerations Section in RFCsT. Narten, H. Alvestrand · obsoleted by RFC 8126 | Best Current Practice | May 2008 |
| 5239 | A Framework for Centralized ConferencingM. Barnes, C. Boulton, O. Levin | Proposed Standard | June 2008 |
| 5246 | The Transport Layer Security (TLS) Protocol Version 1.2T. Dierks, E. Rescorla · obsoleted by RFC 8446, RFC 9846 | Proposed Standard | August 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 |
| 6501 | Conference Information Data Model for Centralized Conferencing (XCON)O. Novo, G. Camarillo, D. Morgan, J. Urpalainen | Proposed Standard | March 2012 |
| 6502 | Conference Event Package Data Format Extension for Centralized Conferencing (XCON)G. Camarillo, S. Srinivasan, R. Even, J. Urpalainen | Proposed Standard | March 2012 |