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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]
Download QR code; Print/export ... Download as PDF; Printable version; In other projects ... This category lists the telephone area codes in Canada. Pages in category ...
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.
After the remaining valid area codes were used up by expansion, in 1995 the rapid increase in the need for more area codes forced the NANPA to allow the digits 2 through 8 to be used as a middle digit in new area code assignments, with 9 being reserved as a last resort for potential future expansion. At the same time, local exchanges were ...
The Canadian Numbering Administration Consortium is the corporation responsible for administering Canada's telecommunication numbering resources. The CNA is regulated by the Canadian Radio-television and Telecommunications Commission (CRTC). [1] CNAC is headquartered in The Glebe area of Ottawa, Ontario.
Other countries maintain an autonomous numbering plan with distinct country codes within the international E.164 specifications by the International Telecommunication Union. Original North American area codes; List of North American Numbering Plan area codes; Telephone numbers in Mexico; Telephone numbers in Greenland
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When the states in the US and provinces in Canada were assigned area codes in 1947 by the American Telephone and Telegraph Company (AT&T), direct distance dialing (DDD) using the area code and the local number was introduced starting in 1951, eventually eliminating the use of the prefix. After that, the local telephone providers designated "00 ...