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This list includes all the SIP response codes defined in IETF RFCs and registered in the SIP Parameters IANA registry as of 27 January 2023. This list also includes SIP response codes defined in obsolete SIP RFCs (specifically, RFC 2543), which are therefore not registered with the IANA; these are explicitly noted as such.
In 1947, the American Telephone and Telegraph Company (AT&T) devised the first nationwide telephone numbering plan and assigned the original North American area codes. The state of California was divided into three numbering plan areas (NPAs) with distinct area codes: 213, 415, and 916, for the southern, central, and northern parts of the state, respectively. [1] As of July 2023, California ...
SCZ. Santa Cruz/Graciosa Bay/Luova Airport. Santa Cruz/Graciosa Bay/Luova. Santa Cruz Island. AGGM. MUA. Munda Airport. Munda. New Georgia Island.
This is a list of telephone dialling codes in the United Kingdom, which adopts an open telephone numbering plan for its public switched telephone network. The national telephone numbering plan is maintained by Ofcom, an independent regulator and competition authority for the UK communications industries. This list is based on the official standard, but includes defunct codes and historical ...
This is a list of FIPS 10-4 region codes from V-Z, using a standardized name format, and cross-linking to articles.
When the American Telephone and Telegraph Company (AT&T) created the first nationwide telephone numbering plan for Operator Toll Dialing in 1947 to automate and speed the connection of long-distance calls, the United States and Canada were divided into 86 geographic numbering plan areas (NPAs) and assigned the original North American area codes. Minnesota was divided into a south-eastern area ...
The list of Eircode routing key areas in Ireland is a tabulation of the routing key areas used by An Post and other mail delivery services for the purposes of directing mail within Ireland.
British Railways shed codes were used to identify the engine sheds that its locomotives and multiple units were allocated to for maintenance purposes. The former London, Midland and Scottish Railway (LMS) alpha-numeric system was extended to cover all regions and used until replaced by alphabetic codes in 1973.