| 20 | ASCII format for network interchangeV.G. Cerf | Internet Standard | October 1969 |
| 768 | User Datagram ProtocolJ. Postel | Internet Standard | August 1980 |
| 793 | Transmission Control ProtocolJ. Postel · obsoleted by RFC 9293 | Internet Standard | September 1981 |
| 1034 | Domain names - concepts and facilitiesP. Mockapetris | Internet Standard | November 1987 |
| 1035 | Domain names - implementation and specificationP. Mockapetris | Internet Standard | November 1987 |
| 1123 | Requirements for Internet Hosts - Application and SupportR. Braden, Ed. | Internet Standard | October 1989 |
| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 2136 | Dynamic Updates in the Domain Name System (DNS UPDATE)P. Vixie, Ed., S. Thomson, Y. Rekhter, J. Bound | Proposed Standard | April 1997 |
| 2181 | Clarifications to the DNS SpecificationR. Elz, R. Bush | Proposed Standard | July 1997 |
| 2308 | Negative Caching of DNS Queries (DNS NCACHE)M. Andrews | Proposed Standard | March 1998 |
| 2782 | A DNS RR for specifying the location of services (DNS SRV)A. Gulbrandsen, P. Vixie, L. Esibov | Proposed Standard | February 2000 |
| 3123 | A DNS RR Type for Lists of Address Prefixes (APL RR)P. Koch | Experimental | June 2001 |
| 4287 | The Atom Syndication FormatM. Nottingham, Ed., R. Sayre, Ed. | Proposed Standard | December 2005 |
| 4953 | Defending TCP Against Spoofing AttacksJ. Touch | Informational | July 2007 |
| 6066 | Transport Layer Security (TLS) Extensions: Extension DefinitionsD. Eastlake 3rd | Proposed Standard | January 2011 |
| 6281 | Understanding Apple's Back to My Mac (BTMM) ServiceS. Cheshire, Z. Zhu, R. Wakikawa, L. Zhang | Informational | June 2011 |
| 6335 | Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number RegistryM. Cotton, L. Eggert, J. Touch, M. Westerlund, S. Cheshire | Best Current Practice | August 2011 |
| 6762 | Multicast DNSS. Cheshire, M. Krochmal | Proposed Standard | February 2013 |
| 6763 | DNS-Based Service DiscoveryS. Cheshire, M. Krochmal | Proposed Standard | February 2013 |
| 6886 | NAT Port Mapping Protocol (NAT-PMP)S. Cheshire, M. Krochmal | Informational | April 2013 |
| 6887 | Port Control Protocol (PCP)D. Wing, Ed., S. Cheshire, M. Boucadair, R. Penno, P. Selkirk | Proposed Standard | April 2013 |
| 6895 | Domain Name System (DNS) IANA ConsiderationsD. Eastlake 3rd | Best Current Practice | April 2013 |
| 7413 | TCP Fast OpenY. Cheng, J. Chu, S. Radhakrishnan, A. Jain | Experimental | December 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 |
| 7673 | Using DNS-Based Authentication of Named Entities (DANE) TLSA Records with SRV RecordsT. Finch, M. Miller, P. Saint-Andre | Proposed Standard | October 2015 |
| 7766 | DNS Transport over TCP - Implementation RequirementsJ. Dickinson, S. Dickinson, R. Bellis, A. Mankin, D. Wessels | Proposed Standard | March 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 |
| 8010 | Internet Printing Protocol/1.1: Encoding and TransportM. Sweet, I. McDonald | Internet Standard | January 2017 |
| 8011 | Internet Printing Protocol/1.1: Model and SemanticsM. Sweet, I. McDonald | Internet Standard | January 2017 |
| 8174 | Ambiguity of Uppercase vs Lowercase in RFC 2119 Key WordsB. Leiba | Best Current Practice | May 2017 |
| 8310 | Usage Profiles for DNS over TLS and DNS over DTLSS. Dickinson, D. Gillmor, T. Reddy | Proposed Standard | March 2018 |
| 8446 | The Transport Layer Security (TLS) Protocol Version 1.3E. Rescorla · obsoleted by RFC 9846 | Proposed Standard | August 2018 |
| 8490 | DNS Stateful OperationsR. Bellis, S. Cheshire, J. Dickinson, S. Dickinson, T. Lemon, T. Pusateri | Proposed Standard | March 2019 |
| 8499 | DNS TerminologyP. Hoffman, A. Sullivan, K. Fujiwara · obsoleted by RFC 9499 | Best Current Practice | January 2019 |
| 8684 | TCP Extensions for Multipath Operation with Multiple AddressesA. Ford, C. Raiciu, M. Handley, O. Bonaventure, C. Paasch | Proposed Standard | March 2020 |
| 8764 | Apple's DNS Long-Lived Queries ProtocolS. Cheshire, M. Krochmal | Informational | June 2020 |
| 8766 | Discovery Proxy for Multicast DNS-Based Service DiscoveryS. Cheshire | Proposed Standard | June 2020 |