| 1179 | Line printer daemon protocolL. McLaughlin | Informational | August 1990 |
| 1951 | DEFLATE Compressed Data Format Specification version 1.3P. Deutsch | Informational | May 1996 |
| 1952 | GZIP file format specification version 4.3P. Deutsch | Informational | May 1996 |
| 1977 | PPP BSD Compression ProtocolV. Schryver | Informational | August 1996 |
| 2079 | Definition of an X.500 Attribute Type and an Object Class to Hold Uniform Resource Identifiers (URIs)M. Smith | Proposed Standard | January 1997 |
| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 2277 | IETF Policy on Character Sets and LanguagesH. Alvestrand | Best Current Practice | January 1998 |
| 2566 | Internet Printing Protocol/1.0: Model and SemanticsR. deBry, T. Hastings, R. Herriot, S. Isaacson, P. Powell · obsoleted by RFC 2911 | Experimental | April 1999 |
| 2608 | Service Location Protocol, Version 2E. Guttman, C. Perkins, J. Veizades, M. Day | Proposed Standard | June 1999 |
| 2617 | HTTP Authentication: Basic and Digest Access AuthenticationJ. Franks, P. Hallam-Baker, J. Hostetler, S. Lawrence, P. Leach, A. Luotonen, L. Stewart · obsoleted by RFC 7235, RFC 7615, RFC 7616, RFC 7617 | Draft Standard | June 1999 |
| 2707 | Job Monitoring MIB - V1.0R. Bergman, T. Hastings, S. Isaacson, H. Lewis | Informational | November 1999 |
| 2911 | Internet Printing Protocol/1.1: Model and SemanticsT. Hastings, Ed., R. Herriot, R. deBry, S. Isaacson, P. Powell · obsoleted by RFC 8011 | Proposed Standard | September 2000 |
| 2926 | Conversion of LDAP Schemas to and from SLP TemplatesJ. Kempf, R. Moats, P. St. Pierre | Informational | September 2000 |
| 2978 | IANA Charset Registration ProceduresN. Freed, J. Postel | Best Current Practice | October 2000 |
| 3510 | Internet Printing Protocol/1.1: IPP URL SchemeR. Herriot, I. McDonald | Proposed Standard | April 2003 |
| 3629 | UTF-8, a transformation format of ISO 10646F. Yergeau | Internet Standard | November 2003 |
| 3712 | Lightweight Directory Access Protocol (LDAP): Schema for Printer ServicesP. Fleming, I. McDonald · obsoleted by RFC 7612 | Informational | February 2004 |
| 3805 | Printer MIB v2R. Bergman, H. Lewis, I. McDonald | Proposed Standard | June 2004 |
| 3987 | Internationalized Resource Identifiers (IRIs)M. Duerst, M. Suignard | Proposed Standard | January 2005 |
| 3995 | Internet Printing Protocol (IPP): Event Notifications and SubscriptionsR. Herriot, T. Hastings | Proposed Standard | March 2005 |
| 4122 | A Universally Unique IDentifier (UUID) URN NamespaceP. Leach, M. Mealling, R. Salz · obsoleted by RFC 9562 | Proposed Standard | July 2005 |
| 4289 | Multipurpose Internet Mail Extensions (MIME) Part Four: Registration ProceduresN. Freed, J. Klensin | Best Current Practice | December 2005 |
| 4510 | Lightweight Directory Access Protocol (LDAP): Technical Specification Road MapK. Zeilenga, Ed. | Proposed Standard | June 2006 |
| 4513 | Lightweight Directory Access Protocol (LDAP): Authentication Methods and Security MechanismsR. Harrison, Ed. | Proposed Standard | June 2006 |
| 4517 | Lightweight Directory Access Protocol (LDAP): Syntaxes and Matching RulesS. Legg, Ed. | Proposed Standard | June 2006 |
| 4524 | COSINE LDAP/X.500 SchemaK. Zeilenga, Ed. | Proposed Standard | June 2006 |
| 4559 | SPNEGO-based Kerberos and NTLM HTTP Authentication in Microsoft WindowsK. Jaganathan, L. Zhu, J. Brezak | Informational | June 2006 |
| 4647 | Matching of Language TagsA. Phillips, Ed., M. Davis, Ed. | Best Current Practice | September 2006 |
| 5198 | Unicode Format for Network InterchangeJ. Klensin, M. Padlipsky | Proposed Standard | 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 |
| 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 |
| 5646 | Tags for Identifying LanguagesA. Phillips, Ed., M. Davis, Ed. | Best Current Practice | September 2009 |
| 5741 | RFC Streams, Headers, and BoilerplatesL. Daigle, Ed., O. Kolkman, Ed., IAB · obsoleted by RFC 7841 | Informational | December 2009 |
| 5870 | A Uniform Resource Identifier for Geographic Locations ('geo' URI)A. Mayrhofer, C. Spanring | Proposed Standard | June 2010 |
| 6818 | Updates to the Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) ProfileP. Yee | Proposed Standard | January 2013 |
| 6838 | Media Type Specifications and Registration ProceduresN. Freed, J. Klensin, T. Hansen | Best Current Practice | January 2013 |
| 7235 | Hypertext Transfer Protocol (HTTP/1.1): AuthenticationR. Fielding, Ed., J. Reschke, Ed. · obsoleted by RFC 9110 | Proposed Standard | June 2014 |
| 7472 | Internet Printing Protocol (IPP) over HTTPS Transport Binding and the 'ipps' URI SchemeI. McDonald, M. Sweet | Proposed Standard | March 2015 |