| 1939 | Post Office Protocol - Version 3J. Myers, M. Rose | Internet Standard | May 1996 |
| 2026 | The Internet Standards Process -- Revision 3S. Bradner | Best Current Practice | October 1996 |
| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 2246 | The TLS Protocol Version 1.0T. Dierks, C. Allen · obsoleted by RFC 4346 | Historic | January 1999 |
| 3261 | SIP: Session Initiation ProtocolJ. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, J. Peterson, R. Sparks, M. Handley, E. Schooler | Proposed Standard | July 2002 |
| 3602 | The AES-CBC Cipher Algorithm and Its Use with IPsecS. Frankel, R. Glenn, S. Kelly | Proposed Standard | September 2003 |
| 3766 | Determining Strengths For Public Keys Used For Exchanging Symmetric KeysH. Orman, P. Hoffman | Best Current Practice | April 2004 |
| 4346 | The Transport Layer Security (TLS) Protocol Version 1.1T. Dierks, E. Rescorla · obsoleted by RFC 5246 | Historic | April 2006 |
| 4347 | Datagram Transport Layer SecurityE. Rescorla, N. Modadugu · obsoleted by RFC 6347 | Historic | April 2006 |
| 4949 | Internet Security Glossary, Version 2R. Shirey | Informational | August 2007 |
| 5077 | Transport Layer Security (TLS) Session Resumption without Server-Side StateJ. Salowey, H. Zhou, P. Eronen, H. Tschofenig · obsoleted by RFC 8446, RFC 9846 | Proposed Standard | January 2008 |
| 5116 | An Interface and Algorithms for Authenticated EncryptionD. McGrew | Proposed Standard | January 2008 |
| 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 |
| 5288 | AES Galois Counter Mode (GCM) Cipher Suites for TLSJ. Salowey, A. Choudhury, D. McGrew | Proposed Standard | August 2008 |
| 5321 | Simple Mail Transfer ProtocolJ. Klensin | Draft Standard | October 2008 |
| 5746 | Transport Layer Security (TLS) Renegotiation Indication ExtensionE. Rescorla, M. Ray, S. Dispensa, N. Oskov | Proposed Standard | February 2010 |
| 6066 | Transport Layer Security (TLS) Extensions: Extension DefinitionsD. Eastlake 3rd | Proposed Standard | January 2011 |
| 6101 | The Secure Sockets Layer (SSL) Protocol Version 3.0A. Freier, P. Karlton, P. Kocher | Historic | August 2011 |
| 6120 | Extensible Messaging and Presence Protocol (XMPP): CoreP. Saint-Andre | Proposed Standard | March 2011 |
| 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 |
| 6176 | Prohibiting Secure Sockets Layer (SSL) Version 2.0S. Turner, T. Polk | Proposed Standard | March 2011 |
| 6347 | Datagram Transport Layer Security Version 1.2E. Rescorla, N. Modadugu · obsoleted by RFC 9147 | Proposed Standard | January 2012 |
| 6698 | The DNS-Based Authentication of Named Entities (DANE) Transport Layer Security (TLS) Protocol: TLSAP. Hoffman, J. Schlyter | Proposed Standard | August 2012 |
| 6797 | HTTP Strict Transport Security (HSTS)J. Hodges, C. Jackson, A. Barth | Proposed Standard | November 2012 |
| 6960 | X.509 Internet Public Key Infrastructure Online Certificate Status Protocol - OCSPS. Santesson, M. Myers, R. Ankney, A. Malpani, S. Galperin, C. Adams | Proposed Standard | June 2013 |
| 6961 | The Transport Layer Security (TLS) Multiple Certificate Status Request ExtensionY. Pettersen · obsoleted by RFC 8446, RFC 9846 | Proposed Standard | June 2013 |
| 6979 | Deterministic Usage of the Digital Signature Algorithm (DSA) and Elliptic Curve Digital Signature Algorithm (ECDSA)T. Pornin | Informational | August 2013 |
| 7228 | Terminology for Constrained-Node NetworksC. Bormann, M. Ersue, A. Keranen | Informational | May 2014 |
| 7301 | Transport Layer Security (TLS) Application-Layer Protocol Negotiation ExtensionS. Friedl, A. Popov, A. Langley, E. Stephan | Proposed Standard | July 2014 |
| 7366 | Encrypt-then-MAC for Transport Layer Security (TLS) and Datagram Transport Layer Security (DTLS)P. Gutmann | Proposed Standard | September 2014 |
| 7435 | Opportunistic Security: Some Protection Most of the TimeV. Dukhovni | Informational | December 2014 |
| 7457 | Summarizing Known Attacks on Transport Layer Security (TLS) and Datagram TLS (DTLS)Y. Sheffer, R. Holz, P. Saint-Andre | Informational | February 2015 |
| 7465 | Prohibiting RC4 Cipher SuitesA. Popov | Proposed Standard | February 2015 |
| 7507 | TLS Fallback Signaling Cipher Suite Value (SCSV) for Preventing Protocol Downgrade AttacksB. Moeller, A. Langley · obsoleted by RFC 8996 | Proposed Standard | April 2015 |
| 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 |
| 7568 | Deprecating Secure Sockets Layer Version 3.0R. Barnes, M. Thomson, A. Pironti, A. Langley | Proposed Standard | June 2015 |
| 7590 | Use of Transport Layer Security (TLS) in the Extensible Messaging and Presence Protocol (XMPP)P. Saint-Andre, T. Alkemade | Proposed Standard | June 2015 |
| 7627 | Transport Layer Security (TLS) Session Hash and Extended Master Secret ExtensionK. Bhargavan, Ed., A. Delignat-Lavaud, A. Pironti, A. Langley, M. Ray · obsoleted by RFC 9846 | Proposed Standard | September 2015 |
| 7633 | X.509v3 Transport Layer Security (TLS) Feature ExtensionP. Hallam-Baker | Proposed Standard | October 2015 |
| 7672 | SMTP Security via Opportunistic DNS-Based Authentication of Named Entities (DANE) Transport Layer Security (TLS)V. Dukhovni, W. Hardaker | Proposed Standard | October 2015 |
| 7673 | Using DNS-Based Authentication of Named Entities (DANE) TLSA Records with SRV RecordsT. Finch, M. Miller, P. Saint-Andre | Proposed Standard | October 2015 |
| 7712 | Domain Name Associations (DNA) in the Extensible Messaging and Presence Protocol (XMPP)P. Saint-Andre, M. Miller, P. Hancke | Proposed Standard | November 2015 |
| 7748 | Elliptic Curves for SecurityA. Langley, M. Hamburg, S. Turner | Informational | January 2016 |
| 7841 | RFC Streams, Headers, and BoilerplatesJ. Halpern, Ed., L. Daigle, Ed., O. Kolkman, Ed. | Informational | May 2016 |
| 7919 | Negotiated Finite Field Diffie-Hellman Ephemeral Parameters for Transport Layer Security (TLS)D. Gillmor | Proposed Standard | August 2016 |
| 7924 | Transport Layer Security (TLS) Cached Information ExtensionS. Santesson, H. Tschofenig | Proposed Standard | July 2016 |
| 7925 | Transport Layer Security (TLS) / Datagram Transport Layer Security (DTLS) Profiles for the Internet of ThingsH. Tschofenig, Ed., T. Fossati | Proposed Standard | July 2016 |
| 8174 | Ambiguity of Uppercase vs Lowercase in RFC 2119 Key WordsB. Leiba | Best Current Practice | May 2017 |
| 8422 | Elliptic Curve Cryptography (ECC) Cipher Suites for Transport Layer Security (TLS) Versions 1.2 and EarlierY. Nir, S. Josefsson, M. Pegourie-Gonnard · obsoleted by RFC 9846 | Proposed Standard | August 2018 |
| 8446 | The Transport Layer Security (TLS) Protocol Version 1.3E. Rescorla · obsoleted by RFC 9846 | Proposed Standard | August 2018 |
| 8452 | AES-GCM-SIV: Nonce Misuse-Resistant Authenticated EncryptionS. Gueron, A. Langley, Y. Lindell | Informational | April 2019 |
| 8461 | SMTP MTA Strict Transport Security (MTA-STS)D. Margolis, M. Risher, B. Ramakrishnan, A. Brotman, J. Jones | Proposed Standard | September 2018 |
| 8470 | Using Early Data in HTTPM. Thomson, M. Nottingham, W. Tarreau | Proposed Standard | September 2018 |
| 8879 | TLS Certificate CompressionA. Ghedini, V. Vasiliev | Proposed Standard | December 2020 |
| 8996 | Deprecating TLS 1.0 and TLS 1.1K. Moriarty, S. Farrell | Best Current Practice | March 2021 |
| 9000 | QUIC: A UDP-Based Multiplexed and Secure TransportJ. Iyengar, Ed., M. Thomson, Ed. | Proposed Standard | May 2021 |
| 9001 | Using TLS to Secure QUICM. Thomson, Ed., S. Turner, Ed. | Proposed Standard | May 2021 |
| 9051 | Internet Message Access Protocol (IMAP) - Version 4rev2A. Melnikov, Ed., B. Leiba, Ed. | Proposed Standard | August 2021 |
| 9110 | HTTP SemanticsR. Fielding, Ed., M. Nottingham, Ed., J. Reschke, Ed. | Internet Standard | June 2022 |
| 9112 | HTTP/1.1R. Fielding, Ed., M. Nottingham, Ed., J. Reschke, Ed. | Internet Standard | June 2022 |
| 9113 | HTTP/2M. Thomson, Ed., C. Benfield, Ed. | Proposed Standard | June 2022 |
| 9147 | The Datagram Transport Layer Security (DTLS) Protocol Version 1.3E. Rescorla, H. Tschofenig, N. Modadugu | Proposed Standard | April 2022 |
| 9155 | Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2L. Velvindron, K. Moriarty, A. Ghedini | Proposed Standard | December 2021 |
| 9162 | Certificate Transparency Version 2.0B. Laurie, E. Messeri, R. Stradling | Experimental | December 2021 |
| 9191 | Handling Large Certificates and Long Certificate Chains in TLS-Based EAP MethodsM. Sethi, J. Preuß Mattsson, S. Turner | Informational | February 2022 |