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Using the format specified by the International Telecommunication Union (ITU) in Recommendation E.164 for telephone numbers, a Canadian number is written as +1NPANXXXXXX, with no spaces, hyphens, or other characters; e.g. +12505550199.
Almost all Toronto Bell Canada landlines have area code 416, with 647-numbers allocated disproportionately to a growing mobile telephone market and to competitive local exchange carriers, such as cable and voice-over-IP services. Telephone numbers are portable, with few exceptions for specific services such as pocket pagers.
The problem was exacerbated by Canada's inefficient system of number allocation. Unlike the United States, Canada does not use number pooling as a relief measure. Every competing carrier is assigned blocks of 10,000 telephone numbers, which correspond to a single central office prefix, in every rate centre in which it plans to offer service ...
Area code 600 is a telephone area code in the North American Numbering Plan for non-geographic use in Canada of specialized telecommunication services such as telex applications, caller-pays cellular, ISDN, and mobile satellite communication services.
These codes are used for fixed or mobile devices, and not assigned to rate centers. As addresses, they may or may not traverse the public switched telephone network (PSTN). Applications include the use as personal 500 numbers. Some carrier-specific services have used area code 700. In Canada, area code 600 is used for non-geographic applications.
rarely used, but serves some satellite phones in the Canadian high Arctic Canadian TWX service used area code 610 until 1992, when it was exchanged for 600. 2015: 622 was activated for Canadian non-geographic use
Area codes 705, 249, and 683 are telephone area codes in the North American Numbering Plan (NANP) for most of northeastern and central Ontario in Canada. Area code 705 was created in a 1956 area code split from portions of the 613 and 519 numbering plan areas. After a reduction in geographic coverage in 1962, the numbering plan area was ...
Area codes 778, 236, and 672 are telephone area codes in the North American Numbering Plan (NANP) for the Canadian province of British Columbia. They form an overlay complex with area code 604 , which serves only a small southwestern section, the Lower Mainland , of the province (including Vancouver ), and area code 250 , which serves the rest ...
Area codes 587, 825, and 368 are telephone area codes in the North American Numbering Plan (NANP) for the entire Canadian province of Alberta. They form an overlay with area code 403 of southern Alberta, and northern Alberta's 780.
The National Do Not Call List (DNCL) (French: Liste nationale de numéros de télécommunication exclus) is a list administered by the Canadian Radio-television and Telecommunications Commission (CRTC) that enables residents of Canada to decide whether or not to receive telemarketing calls.