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Area code 403 is a telephone area code in the North American Numbering Plan (NANP) for the Canadian province of Alberta. The numbering plan area encompasses the southern third of the province, which includes the Calgary area. This numbering plan area is also served by area codes 587, 825, and 368, which form a complex overlay for all of Alberta.
Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. [1] Area codes with two identical trailing digits are easily recognizable codes (ERC). NPAs with 9 in the second position are reserved for future format expansion.
A Canadian postal code (French: code postal) is a six-character string that forms part of a postal address in Canada. [1] Like British, Irish, Dutch, and Argentinian postcodes, Canada's postal codes are alphanumeric. They are in the format A1A 1A1, where A is a letter and 1 is a digit, with a space separating the third and fourth characters.
Telephone numbers in Canada follow the fixed-length format of the North American Numbering Plan (NANP) of a three-digit area code, a three-digit central office code (or exchange code), and a four-digit station or line code. This is represented as NPA NXX XXXX. [1]
ISO 3166-2:CA identifiers' second elements are all the same as these; ISO adopted the existing Canada Post abbreviations. [1] These abbreviations are not the source of letters in Canadian postal codes, which are assigned by Canada Post on a different basis than these abbreviations. While postal codes are also used for sorting, they allow ...
No area codes have been split in Canada since 1999. Area code 438 was considered for overlaying 450 as well, but a later decision determined instead that 579 would be the overlay code. [4] In February 2017, area code 263 was reserved as the third area code in the region, and was placed in service on October 22, 2022. [5]
Area code 819 was cut back to western Quebec, and area code 403 was reduced to serve only Alberta. Thus, borders with area codes 403, 204, and 807 were replaced with the single border on area code 867.
Only the first three characters are listed, corresponding to the Forward Sortation Area (FSA). Canada Post provides a free postal code look-up tool on its website, [1] via its mobile apps for such smartphones as the iPhone and BlackBerry, [2] and sells hard-copy directories and CD-ROMs. Many vendors also sell validation tools, which allow ...