| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 4033 | DNS Security Introduction and RequirementsR. Arends, R. Austein, M. Larson, D. Massey, S. Rose | Proposed Standard | March 2005 |
| 4034 | Resource Records for the DNS Security ExtensionsR. 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 |
| 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 |
| 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 |
| 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 |
| 6235 | IP Flow Anonymization SupportE. Boschi, B. Trammell | Experimental | May 2011 |
| 6265 | HTTP State Management MechanismA. Barth | Proposed Standard | April 2011 |
| 6841 | A Framework for DNSSEC Policies and DNSSEC Practice StatementsF. Ljunggren, AM. Eklund Lowinder, T. Okubo | Informational | January 2013 |
| 6973 | Privacy Considerations for Internet ProtocolsA. Cooper, H. Tschofenig, B. Aboba, J. Peterson, J. Morris, M. Hansen, R. Smith | Informational | July 2013 |
| 7457 | Summarizing Known Attacks on Transport Layer Security (TLS) and Datagram TLS (DTLS)Y. Sheffer, R. Holz, P. Saint-Andre | Informational | February 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 |
| 7626 | DNS Privacy ConsiderationsS. Bortzmeyer · obsoleted by RFC 9076 | Informational | August 2015 |
| 7766 | DNS Transport over TCP - Implementation RequirementsJ. Dickinson, S. Dickinson, R. Bellis, A. Mankin, D. Wessels | Proposed Standard | March 2016 |
| 7816 | DNS Query Name Minimisation to Improve PrivacyS. Bortzmeyer · obsoleted by RFC 9156 | Experimental | March 2016 |
| 7828 | The edns-tcp-keepalive EDNS0 OptionP. Wouters, J. Abley, S. Dickinson, R. Bellis | Proposed Standard | April 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 |
| 7871 | Client Subnet in DNS QueriesC. Contavalli, W. van der Gaast, D. Lawrence, W. Kumari | Informational | May 2016 |
| 7873 | Domain Name System (DNS) CookiesD. Eastlake 3rd, M. Andrews | Proposed Standard | May 2016 |
| 8020 | NXDOMAIN: There Really Is Nothing UnderneathS. Bortzmeyer, S. Huque | Proposed Standard | November 2016 |
| 8027 | DNSSEC Roadblock AvoidanceW. Hardaker, O. Gudmundsson, S. Krishnaswamy | Best Current Practice | November 2016 |
| 8094 | DNS over Datagram Transport Layer Security (DTLS)T. Reddy, D. Wing, P. Patil | Experimental | February 2017 |
| 8174 | Ambiguity of Uppercase vs Lowercase in RFC 2119 Key WordsB. Leiba | Best Current Practice | May 2017 |
| 8198 | Aggressive Use of DNSSEC-Validated CacheK. Fujiwara, A. Kato, W. Kumari | Proposed Standard | July 2017 |
| 8310 | Usage Profiles for DNS over TLS and DNS over DTLSS. Dickinson, D. Gillmor, T. Reddy | Proposed Standard | March 2018 |
| 8404 | Effects of Pervasive Encryption on OperatorsK. Moriarty, Ed., A. Morton, Ed. | Informational | July 2018 |
| 8446 | The Transport Layer Security (TLS) Protocol Version 1.3E. Rescorla · obsoleted by RFC 9846 | Proposed Standard | August 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 |
| 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 |
| 8555 | Automatic Certificate Management Environment (ACME)R. Barnes, J. Hoffman-Andrews, D. McCarney, J. Kasten | Proposed Standard | March 2019 |
| 8618 | Compacted-DNS (C-DNS): A Format for DNS Packet CaptureJ. Dickinson, J. Hague, S. Dickinson, T. Manderson, J. Bond | Proposed Standard | September 2019 |
| 8806 | Running a Root Server Local to a ResolverW. Kumari, P. Hoffman | Informational | June 2020 |