| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 2985 | PKCS #9: Selected Object Classes and Attribute Types Version 2.0M. Nystrom, B. Kaliski | Informational | November 2000 |
| 3552 | Guidelines for Writing RFC Text on Security ConsiderationsE. Rescorla, B. Korver | Best Current Practice | July 2003 |
| 3986 | Uniform Resource Identifier (URI): Generic SyntaxT. Berners-Lee, R. Fielding, L. Masinter | Internet Standard | January 2005 |
| 4086 | Randomness Requirements for SecurityD. Eastlake 3rd, J. Schiller, S. Crocker | Best Current Practice | June 2005 |
| 4648 | The Base16, Base32, and Base64 Data EncodingsS. Josefsson | Proposed Standard | October 2006 |
| 4838 | Delay-Tolerant Networking ArchitectureV. Cerf, S. Burleigh, A. Hooke, L. Torgerson, R. Durst, K. Scott, K. Fall, H. Weiss | Informational | April 2007 |
| 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 |
| 6376 | DomainKeys Identified Mail (DKIM) SignaturesD. Crocker, Ed., T. Hansen, Ed., M. Kucherawy, Ed. | Internet Standard | September 2011 |
| 7841 | RFC Streams, Headers, and BoilerplatesJ. Halpern, Ed., L. Daigle, Ed., O. Kolkman, Ed. | Informational | May 2016 |
| 8174 | Ambiguity of Uppercase vs Lowercase in RFC 2119 Key WordsB. Leiba | Best Current Practice | May 2017 |
| 8555 | Automatic Certificate Management Environment (ACME)R. Barnes, J. Hoffman-Andrews, D. McCarney, J. Kasten | Proposed Standard | March 2019 |
| 8610 | Concise Data Definition Language (CDDL): A Notational Convention to Express Concise Binary Object Representation (CBOR) and JSON Data StructuresH. Birkholz, C. Vigano, C. Bormann | Proposed Standard | June 2019 |
| 8738 | Automated Certificate Management Environment (ACME) IP Identifier Validation ExtensionR.B. Shoemaker | Proposed Standard | February 2020 |
| 8792 | Handling Long Lines in Content of Internet-Drafts and RFCsK. Watsen, E. Auerswald, A. Farrel, Q. Wu | Informational | June 2020 |
| 8823 | Extensions to Automatic Certificate Management Environment for End-User S/MIME CertificatesA. Melnikov | Informational | April 2021 |
| 9054 | CBOR Object Signing and Encryption (COSE): Hash AlgorithmsJ. Schaad | Informational | August 2022 |
| 9171 | Bundle Protocol Version 7S. Burleigh, K. Fall, E. Birrane, III | Proposed Standard | January 2022 |
| 9172 | Bundle Protocol Security (BPSec)E. Birrane, III, K. McKeever | Proposed Standard | January 2022 |
| 9174 | Delay-Tolerant Networking TCP Convergence-Layer Protocol Version 4B. Sipos, M. Demmer, J. Ott, S. Perreault | Proposed Standard | January 2022 |
| 9525 | Service Identity in TLSP. Saint-Andre, R. Salz | Proposed Standard | November 2023 |