| 793 | Transmission Control ProtocolJ. Postel · obsoleted by RFC 9293 | Internet Standard | September 1981 |
| 1035 | Domain names - implementation and specificationP. Mockapetris | Internet Standard | November 1987 |
| 2460 | Internet Protocol, Version 6 (IPv6) SpecificationS. Deering, R. Hinden · obsoleted by RFC 8200 | Draft Standard | December 1998 |
| 2529 | Transmission of IPv6 over IPv4 Domains without Explicit TunnelsB. Carpenter, C. Jung | Proposed Standard | March 1999 |
| 2663 | IP Network Address Translator (NAT) Terminology and ConsiderationsP. Srisuresh, M. Holdrege | Informational | August 1999 |
| 3053 | IPv6 Tunnel BrokerA. Durand, P. Fasano, I. Guardini, D. Lento | Informational | January 2001 |
| 3056 | Connection of IPv6 Domains via IPv4 CloudsB. Carpenter, K. Moore | Proposed Standard | February 2001 |
| 3068 | An Anycast Prefix for 6to4 Relay RoutersC. Huitema · obsoleted by RFC 7526 | Historic | June 2001 |
| 3756 | IPv6 Neighbor Discovery (ND) Trust Models and ThreatsP. Nikander, Ed., J. Kempf, E. Nordmark | Informational | May 2004 |
| 3964 | Security Considerations for 6to4P. Savola, C. Patel | Informational | December 2004 |
| 4033 | DNS Security Introduction and RequirementsR. Arends, R. Austein, M. Larson, D. Massey, S. Rose | Proposed Standard | March 2005 |
| 4035 | Protocol Modifications for the DNS Security ExtensionsR. Arends, R. Austein, M. Larson, D. Massey, S. Rose | Proposed Standard | March 2005 |
| 4301 | Security Architecture for the Internet ProtocolS. Kent, K. Seo | Proposed Standard | December 2005 |
| 4380 | Teredo: Tunneling IPv6 over UDP through Network Address Translations (NATs)C. Huitema | Proposed Standard | February 2006 |
| 4795 | Link-local Multicast Name Resolution (LLMNR)B. Aboba, D. Thaler, L. Esibov | Informational | January 2007 |
| 5214 | Intra-Site Automatic Tunnel Addressing Protocol (ISATAP)F. Templin, T. Gleeson, D. Thaler | Informational | March 2008 |
| 5246 | The Transport Layer Security (TLS) Protocol Version 1.2T. Dierks, E. Rescorla · obsoleted by RFC 8446, RFC 9846 | Proposed Standard | August 2008 |
| 5461 | TCP's Reaction to Soft ErrorsF. Gont | Informational | February 2009 |
| 5569 | IPv6 Rapid Deployment on IPv4 Infrastructures (6rd)R. Despres | Informational | January 2010 |
| 5572 | IPv6 Tunnel Broker with the Tunnel Setup Protocol (TSP)M. Blanchet, F. Parent | Experimental | February 2010 |
| 5741 | RFC Streams, Headers, and BoilerplatesL. Daigle, Ed., O. Kolkman, Ed., IAB · obsoleted by RFC 7841 | Informational | December 2009 |
| 5969 | IPv6 Rapid Deployment on IPv4 Infrastructures (6rd) -- Protocol SpecificationW. Townsley, O. Troan | Proposed Standard | August 2010 |
| 6101 | The Secure Sockets Layer (SSL) Protocol Version 3.0A. Freier, P. Karlton, P. Kocher | Historic | August 2011 |
| 6105 | IPv6 Router Advertisement GuardE. Levy-Abegnoli, G. Van de Velde, C. Popoviciu, J. Mohacsi | Informational | February 2011 |
| 6147 | DNS64: DNS Extensions for Network Address Translation from IPv6 Clients to IPv4 ServersM. Bagnulo, A. Sullivan, P. Matthews, I. van Beijnum | Proposed Standard | April 2011 |
| 6169 | Security Concerns with IP TunnelingS. Krishnan, D. Thaler, J. Hoagland | Informational | April 2011 |
| 6343 | Advisory Guidelines for 6to4 DeploymentB. Carpenter | Informational | August 2011 |
| 6540 | IPv6 Support Required for All IP-Capable NodesW. George, C. Donley, C. Liljenstolpe, L. Howard | Best Current Practice | April 2012 |
| 6555 | Happy Eyeballs: Success with Dual-Stack HostsD. Wing, A. Yourtchenko · obsoleted by RFC 8305 | Proposed Standard | April 2012 |
| 6762 | Multicast DNSS. Cheshire, M. Krochmal | Proposed Standard | February 2013 |
| 6763 | DNS-Based Service DiscoveryS. Cheshire, M. Krochmal | Proposed Standard | February 2013 |