| 1982 | Serial Number ArithmeticR. Elz, R. Bush | Proposed Standard | August 1996 |
| 1996 | A Mechanism for Prompt Notification of Zone Changes (DNS NOTIFY)P. Vixie | Proposed Standard | August 1996 |
| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 2385 | Protection of BGP Sessions via the TCP MD5 Signature OptionA. Heffernan · obsoleted by RFC 5925 | Proposed Standard | August 1998 |
| 3629 | UTF-8, a transformation format of ISO 10646F. Yergeau | Internet Standard | November 2003 |
| 4252 | The Secure Shell (SSH) Authentication ProtocolT. Ylonen, C. Lonvick, Ed. | Proposed Standard | January 2006 |
| 4301 | Security Architecture for the Internet ProtocolS. Kent, K. Seo | Proposed Standard | December 2005 |
| 4808 | Key Change Strategies for TCP-MD5S. Bellovin | Informational | March 2007 |
| 5246 | The Transport Layer Security (TLS) Protocol Version 1.2T. Dierks, E. Rescorla · obsoleted by RFC 8446, RFC 9846 | Proposed Standard | August 2008 |
| 5280 | Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) ProfileD. Cooper, S. Santesson, S. Farrell, S. Boeyen, R. Housley, W. Polk | Proposed Standard | May 2008 |
| 5781 | The rsync URI SchemeS. Weiler, D. Ward, R. Housley | Informational | February 2010 |
| 5925 | The TCP Authentication OptionJ. Touch, A. Mankin, R. Bonica | Proposed Standard | June 2010 |
| 5926 | Cryptographic Algorithms for the TCP Authentication Option (TCP-AO)G. Lebovitz, E. Rescorla | Proposed Standard | June 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 |
| 6480 | An Infrastructure to Support Secure Internet RoutingM. Lepinski, S. Kent | Informational | February 2012 |
| 6481 | A Profile for Resource Certificate Repository StructureG. Huston, R. Loomans, G. Michaelson | Proposed Standard | February 2012 |
| 6487 | A Profile for X.509 PKIX Resource CertificatesG. Huston, G. Michaelson, R. Loomans | Proposed Standard | February 2012 |
| 6810 | The Resource Public Key Infrastructure (RPKI) to Router ProtocolR. Bush, R. Austein | Proposed Standard | January 2013 |
| 6811 | BGP Prefix Origin ValidationP. Mohapatra, J. Scudder, D. Ward, R. Bush, R. Austein | Proposed Standard | January 2013 |
| 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 |
| 8208 | BGPsec Algorithms, Key Formats, and Signature FormatsS. Turner, O. Borchert · obsoleted by RFC 8608 | Proposed Standard | September 2017 |