| 1035 | Domain names - implementation and specificationP. Mockapetris | Internet Standard | November 1987 |
| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 7301 | Transport Layer Security (TLS) Application-Layer Protocol Negotiation ExtensionS. Friedl, A. Popov, A. Langley, E. Stephan | Proposed Standard | July 2014 |
| 7435 | Opportunistic Security: Some Protection Most of the TimeV. Dukhovni | Informational | December 2014 |
| 7672 | SMTP Security via Opportunistic DNS-Based Authentication of Named Entities (DANE) Transport Layer Security (TLS)V. Dukhovni, W. Hardaker | Proposed Standard | October 2015 |
| 7766 | DNS Transport over TCP - Implementation RequirementsJ. Dickinson, S. Dickinson, R. Bellis, A. Mankin, D. Wessels | Proposed Standard | March 2016 |
| 7830 | The EDNS(0) Padding OptionA. Mayrhofer | Proposed Standard | May 2016 |
| 7841 | RFC Streams, Headers, and BoilerplatesJ. Halpern, Ed., L. Daigle, Ed., O. Kolkman, Ed. | Informational | May 2016 |
| 7858 | Specification for DNS over Transport Layer Security (TLS)Z. Hu, L. Zhu, J. Heidemann, A. Mankin, D. Wessels, P. Hoffman | Proposed Standard | May 2016 |
| 8174 | Ambiguity of Uppercase vs Lowercase in RFC 2119 Key WordsB. Leiba | Best Current Practice | May 2017 |
| 8305 | Happy Eyeballs Version 2: Better Connectivity Using ConcurrencyD. Schinazi, T. Pauly | Proposed Standard | December 2017 |
| 8460 | SMTP TLS ReportingD. Margolis, A. Brotman, B. Ramakrishnan, J. Jones, M. Risher | Proposed Standard | September 2018 |
| 8461 | SMTP MTA Strict Transport Security (MTA-STS)D. Margolis, M. Risher, B. Ramakrishnan, A. Brotman, J. Jones | Proposed Standard | September 2018 |
| 8467 | Padding Policies for Extension Mechanisms for DNS (EDNS(0))A. Mayrhofer | Experimental | October 2018 |
| 8484 | DNS Queries over HTTPS (DoH)P. Hoffman, P. McManus | Proposed Standard | October 2018 |
| 8806 | Running a Root Server Local to a ResolverW. Kumari, P. Hoffman | Informational | June 2020 |
| 9102 | TLS DNSSEC Chain ExtensionV. Dukhovni, S. Huque, W. Toorop, P. Wouters, M. Shore | Experimental | August 2021 |
| 9156 | DNS Query Name Minimisation to Improve PrivacyS. Bortzmeyer, R. Dolmans, P. Hoffman | Proposed Standard | November 2021 |
| 9250 | DNS over Dedicated QUIC ConnectionsC. Huitema, S. Dickinson, A. Mankin | Proposed Standard | May 2022 |