| 9399 | Internet X.509 Public Key Infrastructure: Logotypes in X.509 CertificatesS. Santesson, R. Housley, T. Freeman, L. Rosenthol | Proposed Standard | May 2023 |
| 8089 | The "file" URI SchemeM. Kerwin | Proposed Standard | February 2017 |
| 6560 | One-Time Password (OTP) Pre-AuthenticationG. Richards | Proposed Standard | April 2012 |
| 5781 | The rsync URI SchemeS. Weiler, D. Ward, R. Housley | Informational | February 2010 |
| 5070 | The Incident Object Description Exchange FormatR. Danyliw, J. Meijer, Y. Demchenko · obsoleted by RFC 7970 | Proposed Standard | December 2007 |
| 4516 | Lightweight Directory Access Protocol (LDAP): Uniform Resource LocatorM. Smith, Ed., T. Howes | Proposed Standard | June 2006 |
| 4483 | A Mechanism for Content Indirection in Session Initiation Protocol (SIP) MessagesE. Burger, Ed. | Proposed Standard | May 2006 |
| 4324 | Calendar Access Protocol (CAP)D. Royer, G. Babics, S. Mansour | Experimental | December 2005 |
| 4266 | The gopher URI SchemeP. Hoffman | Proposed Standard | November 2005 |
| 4248 | The telnet URI SchemeP. Hoffman | Proposed Standard | October 2005 |
| 4173 | Bootstrapping Clients using the Internet Small Computer System Interface (iSCSI) ProtocolP. Sarkar, D. Missimer, C. Sapuntzakis | Proposed Standard | September 2005 |
| 4157 | The prospero URI SchemeP. Hoffman | Historic | August 2005 |
| 4156 | The wais URI SchemeP. Hoffman | Historic | August 2005 |
| 4083 | Input 3rd-Generation Partnership Project (3GPP) Release 5 Requirements on the Session Initiation Protocol (SIP)M. Garcia-Martin | Informational | May 2005 |
| 4051 | Additional XML Security Uniform Resource Identifiers (URIs)D. Eastlake 3rd · obsoleted by RFC 6931 | Proposed Standard | April 2005 |
| 4037 | Open Pluggable Edge Services (OPES) Callout Protocol (OCP) CoreA. Rousskov | Proposed Standard | March 2005 |
| 3995 | Internet Printing Protocol (IPP): Event Notifications and SubscriptionsR. Herriot, T. Hastings | Proposed Standard | March 2005 |
| 3987 | Internationalized Resource Identifiers (IRIs)M. Duerst, M. Suignard | Proposed Standard | January 2005 |
| 3986 | Uniform Resource Identifier (URI): Generic SyntaxT. Berners-Lee, R. Fielding, L. Masinter | Internet Standard | January 2005 |
| 3983 | Using the Internet Registry Information Service (IRIS) over the Blocks Extensible Exchange Protocol (BEEP)A. Newton, M. Sanz | Proposed Standard | January 2005 |
| 3981 | IRIS: The Internet Registry Information Service (IRIS) Core ProtocolA. Newton, M. Sanz | Proposed Standard | January 2005 |
| 3966 | The tel URI for Telephone NumbersH. Schulzrinne | Proposed Standard | December 2004 |
| 3958 | Domain-Based Application Service Location Using SRV RRs and the Dynamic Delegation Discovery Service (DDDS)L. Daigle, A. Newton | Proposed Standard | January 2005 |
| 3953 | Telephone Number Mapping (ENUM) Service Registration for Presence ServicesJ. Peterson | Proposed Standard | January 2005 |
| 3920 | Extensible Messaging and Presence Protocol (XMPP): CoreP. Saint-Andre, Ed. · obsoleted by RFC 6120 | Proposed Standard | October 2004 |
| 3902 | The "application/soap+xml" media typeM. Baker, M. Nottingham | Informational | September 2004 |
| 3887 | Message Tracking Query ProtocolT. Hansen | Proposed Standard | September 2004 |
| 3881 | Security Audit and Access Accountability Message XML Data Definitions for Healthcare ApplicationsG. Marshall | Informational | October 2004 |
| 3875 | The Common Gateway Interface (CGI) Version 1.1D. Robinson, K. Coar | Informational | October 2004 |
| 3870 | application/rdf+xml Media Type RegistrationA. Swartz | Informational | September 2004 |
| 3864 | Registration Procedures for Message Header FieldsG. Klyne, M. Nottingham, J. Mogul | Best Current Practice | September 2004 |
| 3863 | Presence Information Data Format (PIDF)H. Sugano, S. Fujimoto, G. Klyne, A. Bateman, W. Carr, J. Peterson | Proposed Standard | August 2004 |
| 3862 | Common Presence and Instant Messaging (CPIM): Message FormatG. Klyne, D. Atkins | Proposed Standard | August 2004 |
| 3860 | Common Profile for Instant Messaging (CPIM)J. Peterson | Proposed Standard | August 2004 |
| 3859 | Common Profile for Presence (CPP)J. Peterson | Proposed Standard | August 2004 |
| 3840 | Indicating User Agent Capabilities in the Session Initiation Protocol (SIP)J. Rosenberg, H. Schulzrinne, P. Kyzivat | Proposed Standard | August 2004 |
| 3830 | MIKEY: Multimedia Internet KEYingJ. Arkko, E. Carrara, F. Lindholm, M. Naslund, K. Norrman | Proposed Standard | August 2004 |
| 3824 | Using E.164 numbers with the Session Initiation Protocol (SIP)J. Peterson, H. Liu, J. Yu, B. Campbell | Informational | June 2004 |
| 3805 | Printer MIB v2R. Bergman, H. Lewis, I. McDonald | Proposed Standard | June 2004 |
| 3795 | Survey of IPv4 Addresses in Currently Deployed IETF Application Area Standards Track and Experimental DocumentsR. Sofia, P. Nesser, II | Informational | June 2004 |
| 3778 | The application/pdf Media TypeE. Taft, J. Pravetz, S. Zilles, L. Masinter · obsoleted by RFC 8118 | Informational | May 2004 |
| 3764 | enumservice registration for Session Initiation Protocol (SIP) Addresses-of-RecordJ. Peterson | Proposed Standard | April 2004 |
| 3761 | The E.164 to Uniform Resource Identifiers (URI) Dynamic Delegation Discovery System (DDDS) Application (ENUM)P. Faltstrom, M. Mealling · obsoleted by RFC 6116, RFC 6117 | Proposed Standard | April 2004 |
| 3741 | Exclusive XML Canonicalization, Version 1.0J. Boyer, D. Eastlake 3rd, J. Reagle | Informational | March 2004 |
| 3735 | Guidelines for Extending the Extensible Provisioning Protocol (EPP)S. Hollenbeck | Informational | March 2004 |
| 3722 | String Profile for Internet Small Computer Systems Interface (iSCSI) NamesM. Bakke | Proposed Standard | April 2004 |
| 3720 | Internet Small Computer Systems Interface (iSCSI)J. Satran, K. Meth, C. Sapuntzakis, M. Chadalapaka, E. Zeidner · obsoleted by RFC 7143 | Proposed Standard | April 2004 |
| 3712 | Lightweight Directory Access Protocol (LDAP): Schema for Printer ServicesP. Fleming, I. McDonald · obsoleted by RFC 7612 | Informational | February 2004 |
| 3709 | Internet X.509 Public Key Infrastructure: Logotypes in X.509 CertificatesS. Santesson, R. Housley, T. Freeman · obsoleted by RFC 9399 | Proposed Standard | February 2004 |
| 3696 | Application Techniques for Checking and Transformation of NamesJ. Klensin | Informational | February 2004 |
| 3688 | The IETF XML RegistryM. Mealling | Best Current Practice | January 2004 |
| 3675 | .sex Considered DangerousD. Eastlake 3rd | Informational | February 2004 |
| 3660 | Basic Media Gateway Control Protocol (MGCP) PackagesB. Foster, F. Andreasen | Informational | December 2003 |
| 3653 | XML-Signature XPath Filter 2.0J. Boyer, M. Hughes, J. Reagle | Informational | December 2003 |
| 3650 | Handle System OverviewS. Sun, L. Lannom, B. Boesch | Informational | November 2003 |
| 3648 | Web Distributed Authoring and Versioning (WebDAV) Ordered Collections ProtocolJ. Whitehead, J. Reschke, Ed. | Proposed Standard | December 2003 |
| 3622 | A Uniform Resource Name (URN) Namespace for the Liberty Alliance ProjectM. Mealling | Informational | February 2004 |
| 3620 | The TUNNEL ProfileD. New | Proposed Standard | October 2003 |
| 3617 | Uniform Resource Identifier (URI) Scheme and Applicability Statement for the Trivial File Transfer Protocol (TFTP)E. Lear | Informational | October 2003 |
| 3588 | Diameter Base ProtocolP. Calhoun, J. Loughney, E. Guttman, G. Zorn, J. Arkko · obsoleted by RFC 6733 | Proposed Standard | September 2003 |
| 3546 | Transport Layer Security (TLS) ExtensionsS. Blake-Wilson, M. Nystrom, D. Hopwood, J. Mikkelsen, T. Wright · obsoleted by RFC 4366 | Proposed Standard | June 2003 |
| 3529 | Using Extensible Markup Language-Remote Procedure Calling (XML-RPC) in Blocks Extensible Exchange Protocol (BEEP)W. Harold | Experimental | April 2003 |
| 3520 | Session Authorization Policy ElementL-N. Hamer, B. Gage, B. Kosinski, H. Shieh | Proposed Standard | April 2003 |
| 3510 | Internet Printing Protocol/1.1: IPP URL SchemeR. Herriot, I. McDonald | Proposed Standard | April 2003 |
| 3507 | Internet Content Adaptation Protocol (ICAP)J. Elson, A. Cerpa | Informational | April 2003 |
| 3470 | Guidelines for the Use of Extensible Markup Language (XML) within IETF ProtocolsS. Hollenbeck, M. Rose, L. Masinter | Best Current Practice | January 2003 |
| 3467 | Role of the Domain Name System (DNS)J. Klensin | Informational | March 2003 |
| 3419 | Textual Conventions for Transport AddressesM. Daniele, J. Schoenwaelder | Proposed Standard | December 2002 |
| 3405 | Dynamic Delegation Discovery System (DDDS) Part Five: URI.ARPA Assignment ProceduresM. Mealling | Best Current Practice | October 2002 |
| 3404 | Dynamic Delegation Discovery System (DDDS) Part Four: The Uniform Resource Identifiers (URI)M. Mealling | Proposed Standard | October 2002 |
| 3403 | Dynamic Delegation Discovery System (DDDS) Part Three: The Domain Name System (DNS) DatabaseM. Mealling | Proposed Standard | October 2002 |
| 3368 | The 'go' URI Scheme for the Common Name Resolution ProtocolM. Mealling | Proposed Standard | August 2002 |
| 3367 | Common Name Resolution Protocol (CNRP)N. Popp, M. Mealling, M. Moseley | Proposed Standard | September 2002 |
| 3349 | A Transient Prefix for Identifying Profiles under Development by the Working Groups of the Internet Engineering Task ForceM. Rose | Best Current Practice | August 2002 |
| 3340 | The Application Exchange CoreM. Rose, G. Klyne, D. Crocker | Historic | July 2002 |
| 3305 | Report from the Joint W3C/IETF URI Planning Interest Group: Uniform Resource Identifiers (URIs), URLs, and Uniform Resource Names (URNs): Clarifications and RecommendationsM. Mealling, Ed., R. Denenberg, Ed. | Informational | August 2002 |
| 3296 | Named Subordinate References in Lightweight Directory Access Protocol (LDAP) DirectoriesK. Zeilenga | Proposed Standard | July 2002 |
| 3288 | Using the Simple Object Access Protocol (SOAP) in Blocks Extensible Exchange Protocol (BEEP)E. O'Tuathail, M. Rose · obsoleted by RFC 4227 | Proposed Standard | June 2002 |
| 3275 | (Extensible Markup Language) XML-Signature Syntax and ProcessingD. Eastlake 3rd, J. Reagle, D. Solo | Draft Standard | March 2002 |
| 3261 | SIP: Session Initiation ProtocolJ. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, J. Peterson, R. Sparks, M. Handley, E. Schooler | Proposed Standard | July 2002 |
| 3253 | Versioning Extensions to WebDAV (Web Distributed Authoring and Versioning)G. Clemm, J. Amsden, T. Ellison, C. Kaler, J. Whitehead | Proposed Standard | March 2002 |
| 3236 | The 'application/xhtml+xml' Media TypeM. Baker, P. Stark | Informational | January 2002 |
| 3196 | Internet Printing Protocol/1.1: Implementor's GuideT. Hastings, C. Manros, P. Zehler, C. Kugler, H. Holst | Informational | November 2001 |
| 3165 | Definitions of Managed Objects for the Delegation of Management ScriptsD. Levi, J. Schoenwaelder | Proposed Standard | August 2001 |
| 3151 | A URN Namespace for Public IdentifiersN. Walsh, J. Cowan, P. Grosso | Informational | August 2001 |
| 3117 | On the Design of Application ProtocolsM. Rose | Informational | November 2001 |
| 3111 | Service Location Protocol Modifications for IPv6E. Guttman | Proposed Standard | May 2001 |
| 3080 | The Blocks Extensible Exchange Protocol CoreM. Rose | Proposed Standard | March 2001 |
| 3076 | Canonical XML Version 1.0J. Boyer | Informational | March 2001 |
| 3075 | XML-Signature Syntax and ProcessingD. Eastlake 3rd, J. Reagle, D. Solo · obsoleted by RFC 3275 | Proposed Standard | March 2001 |
| 3050 | Common Gateway Interface for SIPJ. Lennox, H. Schulzrinne, J. Rosenberg | Informational | January 2001 |
| 3023 | XML Media TypesM. Murata, S. St. Laurent, D. Kohn · obsoleted by RFC 7303 | Proposed Standard | January 2001 |
| 2965 | HTTP State Management MechanismD. Kristol, L. Montulli · obsoleted by RFC 6265 | Historic | October 2000 |
| 2938 | Identifying Composite Media FeaturesG. Klyne, L. Masinter | Proposed Standard | September 2000 |
| 2935 | Internet Open Trading Protocol (IOTP) HTTP SupplementD. Eastlake 3rd, C. Smith | Proposed Standard | September 2000 |
| 2916 | E.164 number and DNSP. Faltstrom · obsoleted by RFC 3761 | Proposed Standard | September 2000 |
| 2915 | The Naming Authority Pointer (NAPTR) DNS Resource RecordM. Mealling, R. Daniel · obsoleted by RFC 3401, RFC 3402, RFC 3403, RFC 3404 | Proposed Standard | September 2000 |
| 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 |
| 2910 | Internet Printing Protocol/1.1: Encoding and TransportR. Herriot, Ed., S. Butler, P. Moore, R. Turner, J. Wenn · obsoleted by RFC 8010 | Proposed Standard | September 2000 |
| 2899 | Request for Comments Summary RFC Numbers 2800-2899S. Ginoza | Informational | May 2001 |
| 2854 | The 'text/html' Media TypeD. Connolly, L. Masinter | Informational | June 2000 |
| 2848 | The PINT Service Protocol: Extensions to SIP and SDP for IP Access to Telephone Call ServicesS. Petrack, L. Conroy | Proposed Standard | June 2000 |
| 2838 | Uniform Resource Identifiers for Television BroadcastsD. Zigmond, M. Vickers | Informational | May 2000 |
| 2817 | Upgrading to TLS Within HTTP/1.1R. Khare, S. Lawrence | Proposed Standard | May 2000 |
| 2807 | XML Signature RequirementsJ. Reagle | Informational | July 2000 |
| 2806 | URLs for Telephone CallsA. Vaha-Sipila · obsoleted by RFC 3966 | Proposed Standard | April 2000 |
| 2803 | Digest Values for DOM (DOMHASH)H. Maruyama, K. Tamura, N. Uramoto | Informational | April 2000 |
| 2802 | Digital Signatures for the v1.0 Internet Open Trading Protocol (IOTP)K. Davidson, Y. Kawatsura | Informational | April 2000 |
| 2774 | An HTTP Extension FrameworkH. Nielsen, P. Leach, S. Lawrence | Historic | February 2000 |
| 2756 | Hyper Text Caching Protocol (HTCP/0.0)P. Vixie, D. Wessels | Experimental | January 2000 |
| 2732 | Format for Literal IPv6 Addresses in URL'sR. Hinden, B. Carpenter, L. Masinter · obsoleted by RFC 3986 | Proposed Standard | December 1999 |
| 2718 | Guidelines for new URL SchemesL. Masinter, H. Alvestrand, D. Zigmond, R. Petke · obsoleted by RFC 4395 | Informational | November 1999 |
| 2717 | Registration Procedures for URL Scheme NamesR. Petke, I. King · obsoleted by RFC 4395 | Best Current Practice | November 1999 |
| 2707 | Job Monitoring MIB - V1.0R. Bergman, T. Hastings, S. Isaacson, H. Lewis | Informational | November 1999 |
| 2639 | Internet Printing Protocol/1.0: Implementer's GuideT. Hastings, C. Manros · obsoleted by RFC 3196 | Informational | July 1999 |
| 2629 | Writing I-Ds and RFCs using XMLM. Rose · obsoleted by RFC 7749 | Informational | 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 |
| 2616 | Hypertext Transfer Protocol -- HTTP/1.1R. Fielding, J. Gettys, J. Mogul, H. Frystyk, L. Masinter, P. Leach, T. Berners-Lee · obsoleted by RFC 7230, RFC 7231, RFC 7232, RFC 7233, RFC 7234, RFC 7235 | Draft Standard | June 1999 |
| 2614 | An API for Service LocationJ. Kempf, E. Guttman | Informational | June 1999 |
| 2609 | Service Templates and Service: SchemesE. Guttman, C. Perkins, J. Kempf | Proposed Standard | June 1999 |
| 2608 | Service Location Protocol, Version 2E. Guttman, C. Perkins, J. Veizades, M. Day | Proposed Standard | June 1999 |
| 2594 | Definitions of Managed Objects for WWW ServicesH. Hazewinkel, C. Kalbfleisch, J. Schoenwaelder | Proposed Standard | May 1999 |
| 2592 | Definitions of Managed Objects for the Delegation of Management ScriptD. Levi, J. Schoenwaelder · obsoleted by RFC 3165 | Proposed Standard | May 1999 |
| 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 |
| 2565 | Internet Printing Protocol/1.0: Encoding and TransportR. Herriot, Ed., S. Butler, P. Moore, R. Turner · obsoleted by RFC 2910 | Experimental | April 1999 |
| 2543 | SIP: Session Initiation ProtocolM. Handley, H. Schulzrinne, E. Schooler, J. Rosenberg · obsoleted by RFC 3261, RFC 3262, RFC 3263, RFC 3264, RFC 3265 | Proposed Standard | March 1999 |
| 2538 | Storing Certificates in the Domain Name System (DNS)D. Eastlake 3rd, O. Gudmundsson · obsoleted by RFC 4398 | Proposed Standard | March 1999 |
| 2518 | HTTP Extensions for Distributed Authoring -- WEBDAVY. Goland, E. Whitehead, A. Faizi, S. Carter, D. Jensen · obsoleted by RFC 4918 | Proposed Standard | February 1999 |
| 2483 | URI Resolution Services Necessary for URN ResolutionM. Mealling, R. Daniel | Experimental | January 1999 |
| 2397 | The "data" URL schemeL. Masinter | Proposed Standard | August 1998 |