The Bureau of Transportation Statistics (BTS), as part of the United States Department of Transportation (US DOT), maintains a list of U.S. state and country codes,[1] named World Area Codes (WAC).
^"BTS Aviation Support Tables: World Area Codes (WAC)".
geographic numbering plan areas (NPAs). Each NPA is identified by one or more numbering plan areacodes (NPA codes, or areacodes), consisting of three digits...
Country calling codes, country dial-in codes, international subscriber dialing (ISD) codes, or most commonly, telephone country codes are telephone number...
numbering plan area is completely surrounded by areacode 773, which serves the rest of Chicago. Both areacodes form an overlay complex with areacode 872. 312...
Areacodes 818 and 747 are telephone areacodes in the North American Numbering Plan (NANP) for the San Fernando Valley region of Los Angeles County in...
Areacodes 619 and 858 are telephone areacodes in the North American Numbering Plan (NANP) for most of San Diego County in the U.S. state of California...
maintains its own list of codes, so-called WorldAreaCodes (WAC), for state and country codes. GOST 7.67: country codes in Cyrillic from the GOST standards...
The original North American areacodes were established by the American Telephone and Telegraph Company (AT&T) in 1947, after the demonstration of regional...
Canadian areacodes that are not part of an overlay numbering plan, the others being 709 and 807. The incumbent local exchange carrier for areacode 867 is...
were 876,445 postal codes using Forward Sortation Areas from A0A in Newfoundland to Y1A in Yukon. Canada Post provides a postal code look-up tool on its...
NANP areacodes North American Numbering Plan Areacodes in the Caribbean Telephone numbers in the United Kingdom Drop "809" Code, Cruising World, January...
This is a list of areacodes in the U.S. state of Georgia. In 1947, Georgia was a single numbering plan area (NPA) with areacode 404. In 1954, 912 was...
three areacodes (706, 903 and 905) had been assigned, and Mexico opted for an international numbering format, using country code 52. The areacodes in use...
Numbering Plan (NANP) began with the assignment of areacodes in the Caribbean in 1958, when areacode 809 was designated for Bermuda and any other potential...
Calgary area. This numbering plan area is also served by areacodes 587, 825, and 368, which form a complex overlay for all of Alberta. Areacode 403 was...
The ICAO airport code or location indicator is a four-letter code designating aerodromes around the world. These codes, as defined by the International...
area it is first necessary to dial the trunk code of 0, followed by the areacode (2, 3, 7 or 8) and then the specific local number. The areacodes do...
Postal codes used in the United Kingdom, British Overseas Territories and Crown dependencies are known as postcodes (originally, postal codes). They are...
which require the use of a postal code. Although postal codes are usually assigned to geographical areas, special codes are sometimes assigned to individual...
from general assignment as Service Access Codes (SAC). In 1962, AT&T assigned the first N10 code in areacode 510, for conversion to dial service of the...
subdivisions – Part 1: Country codes defines codes for the names of countries, dependent territories, and special areas of geographical interest. It defines...
Codes. In 1983, the U.S. Postal Service introduced an expanded ZIP Code system that it named ZIP+4, often known as "plus-four codes", "add-on codes"...
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