| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 2326 | Real Time Streaming Protocol (RTSP)H. Schulzrinne, A. Rao, R. Lanphier · obsoleted by RFC 7826 | Proposed Standard | April 1998 |
| 2974 | Session Announcement ProtocolM. Handley, C. Perkins, E. Whelan | Experimental | October 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 |
| 3547 | The Group Domain of InterpretationM. Baugher, B. Weis, T. Hardjono, H. Harney · obsoleted by RFC 6407 | Proposed Standard | July 2003 |
| 3550 | RTP: A Transport Protocol for Real-Time ApplicationsH. Schulzrinne, S. Casner, R. Frederick, V. Jacobson | Internet Standard | July 2003 |
| 3551 | RTP Profile for Audio and Video Conferences with Minimal ControlH. Schulzrinne, S. Casner | Internet Standard | July 2003 |
| 3556 | Session Description Protocol (SDP) Bandwidth Modifiers for RTP Control Protocol (RTCP) BandwidthS. Casner | Proposed Standard | July 2003 |
| 3605 | Real Time Control Protocol (RTCP) attribute in Session Description Protocol (SDP)C. Huitema | Proposed Standard | October 2003 |
| 3611 | RTP Control Protocol Extended Reports (RTCP XR)T. Friedman, Ed., R. Caceres, Ed., A. Clark, Ed. | Proposed Standard | November 2003 |
| 3618 | Multicast Source Discovery Protocol (MSDP)B. Fenner, Ed., D. Meyer, Ed. | Experimental | October 2003 |
| 3629 | UTF-8, a transformation format of ISO 10646F. Yergeau | Internet Standard | November 2003 |
| 3830 | MIKEY: Multimedia Internet KEYingJ. Arkko, E. Carrara, F. Lindholm, M. Naslund, K. Norrman | Proposed Standard | August 2004 |
| 3973 | Protocol Independent Multicast - Dense Mode (PIM-DM): Protocol Specification (Revised)A. Adams, J. Nicholas, W. Siadak | Experimental | January 2005 |
| 4566 | SDP: Session Description ProtocolM. Handley, V. Jacobson, C. Perkins · obsoleted by RFC 8866 | Proposed Standard | July 2006 |
| 4570 | Session Description Protocol (SDP) Source FiltersB. Quinn, R. Finlayson | Proposed Standard | July 2006 |
| 4585 | Extended RTP Profile for Real-time Transport Control Protocol (RTCP)-Based Feedback (RTP/AVPF)J. Ott, S. Wenger, N. Sato, C. Burmeister, J. Rey | Proposed Standard | July 2006 |
| 4601 | Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised)B. Fenner, M. Handley, H. Holbrook, I. Kouvelas · obsoleted by RFC 7761 | Proposed Standard | August 2006 |
| 4604 | Using Internet Group Management Protocol Version 3 (IGMPv3) and Multicast Listener Discovery Protocol Version 2 (MLDv2) for Source-Specific MulticastH. Holbrook, B. Cain, B. Haberman | Proposed Standard | August 2006 |
| 4608 | Source-Specific Protocol Independent Multicast in 232/8D. Meyer, R. Rockell, G. Shepherd | Best Current Practice | August 2006 |
| 4760 | Multiprotocol Extensions for BGP-4T. Bates, R. Chandra, D. Katz, Y. Rekhter | Draft Standard | January 2007 |
| 5124 | Extended Secure RTP Profile for Real-time Transport Control Protocol (RTCP)-Based Feedback (RTP/SAVPF)J. Ott, E. Carrara | Proposed Standard | February 2008 |
| 5226 | Guidelines for Writing an IANA Considerations Section in RFCsT. Narten, H. Alvestrand · obsoleted by RFC 8126 | Best Current Practice | May 2008 |
| 5576 | Source-Specific Media Attributes in the Session Description Protocol (SDP)J. Lennox, J. Ott, T. Schierl | Proposed Standard | June 2009 |
| 5741 | RFC Streams, Headers, and BoilerplatesL. Daigle, Ed., O. Kolkman, Ed., IAB · obsoleted by RFC 7841 | Informational | December 2009 |