| 1034 | Domain names - concepts and facilitiesP. Mockapetris | Internet Standard | November 1987 |
| 1122 | Requirements for Internet Hosts - Communication LayersR. Braden, Ed. | Internet Standard | October 1989 |
| 1876 | A Means for Expressing Location Information in the Domain Name SystemC. Davis, P. Vixie, T. Goodwin, I. Dickinson | Experimental | January 1996 |
| 2045 | Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message BodiesN. Freed, N. Borenstein | Draft Standard | November 1996 |
| 2219 | Use of DNS Aliases for Network ServicesM. Hamilton, R. Wright | Best Current Practice | October 1997 |
| 2326 | Real Time Streaming Protocol (RTSP)H. Schulzrinne, A. Rao, R. Lanphier · obsoleted by RFC 7826 | Proposed Standard | April 1998 |
| 2533 | A Syntax for Describing Media Feature SetsG. Klyne | Proposed Standard | March 1999 |
| 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 |
| 2703 | Protocol-independent Content Negotiation FrameworkG. Klyne | Informational | September 1999 |
| 2782 | A DNS RR for specifying the location of services (DNS SRV)A. Gulbrandsen, P. Vixie, L. Esibov | Proposed Standard | February 2000 |
| 2818 | HTTP Over TLSE. Rescorla · obsoleted by RFC 9110 | Informational | May 2000 |
| 2821 | Simple Mail Transfer ProtocolJ. Klensin, Ed. · obsoleted by RFC 5321 | Proposed Standard | April 2001 |
| 2826 | IAB Technical Comment on the Unique DNS RootInternet Architecture Board | Informational | May 2000 |
| 2912 | Indicating Media Features for MIME ContentG. Klyne | Proposed Standard | September 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 |
| 3310 | Hypertext Transfer Protocol (HTTP) Digest Authentication Using Authentication and Key Agreement (AKA)A. Niemi, J. Arkko, V. Torvinen | Informational | September 2002 |
| 3403 | Dynamic Delegation Discovery System (DDDS) Part Three: The Domain Name System (DNS) DatabaseM. Mealling | Proposed Standard | October 2002 |
| 3675 | .sex Considered DangerousD. Eastlake 3rd | Informational | February 2004 |