| 791 | Internet ProtocolJ. Postel | Internet Standard | September 1981 |
| 1122 | Requirements for Internet Hosts - Communication LayersR. Braden, Ed. | Internet Standard | October 1989 |
| 1123 | Requirements for Internet Hosts - Application and SupportR. Braden, Ed. | Internet Standard | October 1989 |
| 1321 | The MD5 Message-Digest AlgorithmR. Rivest | Informational | April 1992 |
| 1952 | GZIP file format specification version 4.3P. Deutsch | Informational | May 1996 |
| 2104 | HMAC: Keyed-Hashing for Message AuthenticationH. Krawczyk, M. Bellare, R. Canetti | Informational | February 1997 |
| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 2279 | UTF-8, a transformation format of ISO 10646F. Yergeau · obsoleted by RFC 3629 | Draft Standard | January 1998 |
| 2782 | A DNS RR for specifying the location of services (DNS SRV)A. Gulbrandsen, P. Vixie, L. Esibov | Proposed Standard | February 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 |
| 3424 | IAB Considerations for UNilateral Self-Address Fixing (UNSAF) Across Network Address TranslationL. Daigle, Ed., IAB | Informational | November 2002 |
| 3454 | Preparation of Internationalized Strings ("stringprep")P. Hoffman, M. Blanchet · obsoleted by RFC 7564 | Proposed Standard | January 2003 |
| 3489 | STUN - Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs)J. Rosenberg, J. Weinberger, C. Huitema, R. Mahy · obsoleted by RFC 5389 | Proposed Standard | March 2003 |
| 3629 | UTF-8, a transformation format of ISO 10646F. Yergeau | Internet Standard | November 2003 |
| 4013 | SASLprep: Stringprep Profile for User Names and PasswordsK. Zeilenga · obsoleted by RFC 7613 | Proposed Standard | March 2005 |
| 4107 | Guidelines for Cryptographic Key ManagementS. Bellovin, R. Housley | Best Current Practice | June 2005 |
| 4648 | The Base16, Base32, and Base64 Data EncodingsS. Josefsson | Proposed Standard | October 2006 |
| 5090 | RADIUS Extension for Digest AuthenticationB. Sterman, D. Sadolevsky, D. Schwartz, D. Williams, W. Beck | Proposed Standard | February 2008 |
| 5389 | Session Traversal Utilities for NAT (STUN)J. Rosenberg, R. Mahy, P. Matthews, D. Wing · obsoleted by RFC 8489 | Proposed Standard | October 2008 |
| 5626 | Managing Client-Initiated Connections in the Session Initiation Protocol (SIP)C. Jennings, Ed., R. Mahy, Ed., F. Audet, Ed. | Proposed Standard | October 2009 |
| 5766 | Traversal Using Relays around NAT (TURN): Relay Extensions to Session Traversal Utilities for NAT (STUN)R. Mahy, P. Matthews, J. Rosenberg · obsoleted by RFC 8656 | Proposed Standard | April 2010 |
| 5769 | Test Vectors for Session Traversal Utilities for NAT (STUN)R. Denis-Courmont | Informational | April 2010 |
| 5780 | NAT Behavior Discovery Using Session Traversal Utilities for NAT (STUN)D. MacDonald, B. Lowekamp | Experimental | May 2010 |
| 5890 | Internationalized Domain Names for Applications (IDNA): Definitions and Document FrameworkJ. Klensin | Proposed Standard | August 2010 |
| 6125 | Representation and Verification of Domain-Based Application Service Identity within Internet Public Key Infrastructure Using X.509 (PKIX) Certificates in the Context of Transport Layer Security (TLS)P. Saint-Andre, J. Hodges · obsoleted by RFC 9525 | Proposed Standard | March 2011 |
| 6151 | Updated Security Considerations for the MD5 Message-Digest and the HMAC-MD5 AlgorithmsS. Turner, L. Chen | Informational | March 2011 |
| 6298 | Computing TCP's Retransmission TimerV. Paxson, M. Allman, J. Chu, M. Sargent | Proposed Standard | June 2011 |
| 6347 | Datagram Transport Layer Security Version 1.2E. Rescorla, N. Modadugu · obsoleted by RFC 9147 | Proposed Standard | January 2012 |
| 6544 | TCP Candidates with Interactive Connectivity Establishment (ICE)J. Rosenberg, A. Keranen, B. B. Lowekamp, A. B. Roach | Proposed Standard | March 2012 |
| 7064 | URI Scheme for the Session Traversal Utilities for NAT (STUN) ProtocolS. Nandakumar, G. Salgueiro, P. Jones, M. Petit-Huguenin | Proposed Standard | November 2013 |
| 7231 | Hypertext Transfer Protocol (HTTP/1.1): Semantics and ContentR. Fielding, Ed., J. Reschke, Ed. · obsoleted by RFC 9110 | Proposed Standard | June 2014 |
| 7350 | Datagram Transport Layer Security (DTLS) as Transport for Session Traversal Utilities for NAT (STUN)M. Petit-Huguenin, G. Salgueiro | Proposed Standard | August 2014 |
| 7525 | Recommendations for Secure Use of Transport Layer Security (TLS) and Datagram Transport Layer Security (DTLS)Y. Sheffer, R. Holz, P. Saint-Andre · obsoleted by RFC 9325 | Best Current Practice | May 2015 |
| 7616 | HTTP Digest Access AuthenticationR. Shekh-Yusef, Ed., D. Ahrens, S. Bremer | Proposed Standard | September 2015 |
| 7841 | RFC Streams, Headers, and BoilerplatesJ. Halpern, Ed., L. Daigle, Ed., O. Kolkman, Ed. | Informational | May 2016 |
| 8126 | Guidelines for Writing an IANA Considerations Section in RFCsM. Cotton, B. Leiba, T. Narten | Best Current Practice | June 2017 |
| 8174 | Ambiguity of Uppercase vs Lowercase in RFC 2119 Key WordsB. Leiba | Best Current Practice | May 2017 |
| 8200 | Internet Protocol, Version 6 (IPv6) SpecificationS. Deering, R. Hinden | Internet Standard | July 2017 |
| 8264 | PRECIS Framework: Preparation, Enforcement, and Comparison of Internationalized Strings in Application ProtocolsP. Saint-Andre, M. Blanchet | Proposed Standard | October 2017 |
| 8265 | Preparation, Enforcement, and Comparison of Internationalized Strings Representing Usernames and PasswordsP. Saint-Andre, A. Melnikov | Proposed Standard | October 2017 |
| 8305 | Happy Eyeballs Version 2: Better Connectivity Using ConcurrencyD. Schinazi, T. Pauly | Proposed Standard | December 2017 |
| 8445 | Interactive Connectivity Establishment (ICE): A Protocol for Network Address Translator (NAT) TraversalA. Keranen, C. Holmberg, J. Rosenberg | Proposed Standard | July 2018 |
| 8446 | The Transport Layer Security (TLS) Protocol Version 1.3E. Rescorla · obsoleted by RFC 9846 | Proposed Standard | August 2018 |