RFCs
URX:
RFC 1736 - Functional Recommendations for Internet Resource Locators. February 1995. Informational.
RFC 1737 - Functional Requirements for Uniform Resource Names. December 1994. Informational.
RFC 2141 - URN Syntax. May 1997. Proposed Standard.
RFC 2288 - Using Existing Bibliographic Identifiers as Uniform Resource Namesury 1998. Informational.
RFC 3305 - Report from the Joint W3C/IETF URI Planning Interest Group: Uniform Resource Identifiers (URIs), URLs, and Uniform Resource Names (URNs): Clarifications and Recommendations. August 2002. Informational.
RFC 3406 - Uniform Resource Names (URN) Namespace Definition Mechanisms. October 2002. Best Current Practice.
RFC 3553 - An IETF URN Sub-namespace for Registered Protocol Parameters. June 2003. Best Current Practice.
RFC 3986 - Uniform Resource Identifier (URI): Generic Syntax. January 2005. Standard.
RFC 3987 - Internationalized Resource Identifiers (IRIs). January 2005. Proposed Standard.

URN Namespaces (complete):
RFC 2648 - A URN Namespace for IETF Documents. August 1999. Informational.
RFC 3043 - The Network Solutions Personal Internet Name (PIN): A URN Namespace for People and Organizations. January 2001. Informational.
RFC 3044 - Using The ISSN (International Serial Standard Number) as URN (Uniform Resource Names) within an ISSN-URN Namespace. January 2001. Informational.
RFC 3061 - A URN Namespace of Object Identifiers. February 2001. Informational.
RFC 3085 - URN Namespace for NewsML Resources. March 2001. Informational.
RFC 3120 - A URN Namespace for XML.org. June 2001. Informational.
RFC 3121 - A URN Namespace for OASIS. June 2001. Informational.
RFC 3151 - A URN Namespace for Public Identifiers. August 2001. Informational.
RFC 3187 - Using International Standard Book Numbers as Uniform Resource Names. October 2001. Informational.
RFC 3188 - Using National Bibliography Numbers as Uniform Resource Names. October 2001. Informational.
RFC 3541 - A Uniform Resource Name (URN) Namespace for the Web3D Consortium (Web3D). May 2003. Informational.
RFC 3613 - Definition of a Uniform Resource Name (URN) Namespace for the the Middleware Architecture Committee for Education (MACE). October 2003. Informational.
RFC 3614 - A Uniform Resource Name (URN) Namespace for the Motion Picture Experts Group (MPEG). September 2003. Informational.
RFC 3615 - A Uniform Resource Name (URN) Namespace for SWIFT Financial Messaging. September 2003. Informational.
RFC 3616 - A Uniform Resource Name (URN) Namespace for Foundation for Intelligent Physical Agents (FIPA). September 2003. Informational.
RFC 3937 - A Uniform Resource Name (URN) Namespace for the International Press Telecommunications Council (IPTC). October 2004. Informational.
RFC 4122 - A Universally Unique IDentifier (UUID) URN Namespace. July 2005. Proposed Standard.
RFC 4152 - A Uniform Resource Name (URN) Namespace for the Common Language Equipment Identifier (CLEI) Code. August 2005. Informational.
RFC 4195 - A Uniform Resource Name (URN) Namespace for the TV-Anytime Forum. October 2005. Informational.
RFC 4198 - A Uniform Resource Name (URN) Namespace for Federated Content. October 2005. Informational.
RFC 4246 - International Standard Audiovisual Number (ISAN) URN Definition. February 2006. Informational.
RFC 4350 - A Uniform Resource Name (URN) Namespace for the New Zealand Government. February 2006. Informational.
RFC 4358 - A Uniform Resource Name (URN) Namespace for the Open Mobile Alliance (OMA). January 2006. Informational.

URI/URL Schemes (incomplete here, since many protocols define one):
RFC 2224 - NFS URL Scheme. October 1997. Informational.
RFC 2255 - The LDAP URL Format. December 1997. Proposed Standard.
RFC 2368 - The mailto URL scheme. July 1998. Proposed Standard.
RFC 2384 - POP URL Scheme. August 1998. Proposed Standard.
RFC 2806 - URLs for Telephone Calls. April 2000. Proposed Standard.
RFC 3368 - The 'go' URI Scheme for the Common Name Resolution Protocol. August 2002. Proposed Standard.
RFC 3508 - H.323 Uniform Resource Locator (URL) Scheme Registration. April 2003. Informational.
RFC 3510 - Internet Printing Protocol/1.1: IPP URL Scheme. April 2003. Proposed Standard.
RFC 3617 - Uniform Resource Identifier (URI) Scheme and Applicability Statement for the Trivial File Transfer Protocol (TFTP). October 2003. Informational.
RFC 3966 - The tel URI for Telephone Numbers. December 2004. Proposed Standard.
RFC 4051 - Additional XML Security Uniform Resource Identifiers (URIs). April 2005. Proposed Standard.
RFC 4088 - Uniform Resource Identifier (URI) Scheme for the Simple Network Management Protocol (SNMP). June 2005. Proposed Standard.
RFC 4151 - The 'tag' URI Scheme. October 2005. Informational.
RFC 4156 - The wais URI Scheme. August 2005. Historic.
RFC 4179 - Using Universal Content Identifier (UCI) as Uniform Resource Names (URN). October 2005. Informational.
RFC 4248 - The telnet URI Scheme. October 2005. Proposed Standard.
RFC 4452 - The "info" URI Scheme for Information Assets with Identifiers in Public Namespaces. April 2006. Informational.
RFC 4501 - Domain Name System Uniform Resource Identifiers. May 2006. Proposed Standard.

Resolution:
RFC 2169 - A Trivial Convention for using HTTP in URN Resolution. June 1997. Experimental.
RFC 2276 - Architectural Principles of Uniform Resource Name Resolution. January 1998. Informational.
RFC 2483 - URI Resolution Services Necessary for URN Resolution. January 1999. Experimental.
RFC 3367 - Common Name Resolution Protocol (CNRP). August 2002. Proposed Standard.
RFC 3404 - Dynamic Delegation Discovery System (DDDS) Part Four: The Uniform Resource Identifiers (URI) Resolution Application. October 2002. Proposed Standard.
RFC 3405 - Dynamic Delegation Discovery System (DDDS) Part Five: URI.ARPA Assignment Procedures. October 2002. Best Current Practice.

Working Group Drafts


Non WG Drafts
draft-fielding-uri-rfc2396bis - Uniform Resource Identifier (URI): Generic Syntax. Novermber 2002 (initial version).
draft-josefsson-dns-url - Domain Name System Uniform Resource Identifiers.
draft-lear-tftp-uri - URI Scheme for the TFTP Protocol.
draft-klensin-name-filters - User Interface Evaluation and Filtering of Internet Addresses and Locators. February 2003 (initial version).
draft-paskin-doi-uri - The 'doi' URI Scheme for Digital Object Identifier (DOI).
draft-wilde-sms-service - Registration of GSTN SMS Service Qualifier.
draft-wilde-sms-uri - URI scheme for GSM Short Message Service.

Links
IANA: Uniform Resource Identifier (URI) Schemes
IANA: Uniform Resource Names (URN) Namespaces

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