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Toronto is the centre of the largest local calling area in Canada, and one of the largest in North America. As of 2013, the following points in area code 905 were a local call to 416 in Toronto: Ajax-Pickering, Aurora, Beeton, Bethesda, Bolton, Brampton, Caledon East, Campbellville, Castlemore, Claremont, Georgetown, Gormley, King City, Markham, Milton, Mississauga (rate centres Clarkson ...
Each NPA was identified by a three-digit area code used as a prefix to each local telephone number. The United States received seventy-seven area codes, and Canada nine. The initial system of numbering plan areas and area codes was expanded rapidly during the ensuing decades, and established the North American Numbering Plan (NANP).
For international access the NANP is assigned the country code 1, which is dialed as a prefix in the international E.164 telephone numbering plan.. The trunk prefix for dialing long-distance calls, across numbering plan area (NPA) boundaries within Canada or to other NANP countries, is also 1.
In 2016, area code 614 was overlaid with 380 in the Columbus/Central Ohio area for the same reason. In 2020, 326 was added as an all services overlay for 937. Area code 283 was added as an overlay for 513 on April 28, 2023. [2] [3] Area code 436 went into service on March 1, 2024, as an overlay of 440. [4]
Area codes 519, 226, 548, and 382 are overlay telephone area codes in the North American Numbering Plan (NANP) for most of southwestern Ontario. Area code 519 was the initial code of the numbering plan area (NPA). It was created in 1953 from the western portion of area code 416 and the southwestern portion of 613.
0–9. Area codes 204, 431, and 584; Area code 250; Area codes 306, 639, and 474; Area codes 418, 581, and 367; Area code 403; Area codes 416, 647, and 437
The largest telephone numbering plan in North American is the North American Numbering Plan (NANP), serving 25 regions or countries. Other countries maintain an autonomous numbering plan with distinct country codes within the international E.164 specifications by the International Telecommunication Union.
Golden Horseshoe region of Ontario, including suburban Toronto, Hamilton, Oshawa, and the Niagara Peninsula in Ontario: 321: 407: Central Florida: In addition to being the sole area code in the Space Coast region around the Kennedy Space Center, this is the only partial overlay area code in North America 323: 213