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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.
Area codes 905, 289, 365, and 742 are telephone area codes in the North American Numbering Plan (NANP) for the Golden Horseshoe region that surrounds Lake Ontario in Southern Ontario, Canada. The numbering plan area (NPA) comprises (clockwise) the Niagara Peninsula, the city of Hamilton, the regional municipalities of Halton, Peel, York, Durham ...
Ontario (Ottawa metropolitan area and southeastern Ontario) May 17, 2010: ... Canada area codes of 236, 250, 672, or 778 depending on its assigned number) 1957: 908:
Area codes 506 and 428; Area codes 514, 438, and 263; Area codes 519, 226, 548, and 382; Area codes 587, 825, and 368; Area code 600; Area code 604; Area codes 613, 343, and 753; Area code 700; Area codes 705, 249, and 683; Area code 709 and 879; Area codes 778, 236, and 672; Area code 780; Area code 807; Area codes 819, 873, and 468; Area code ...
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.
Area code 450 entered service in 1998. The numbering plan area completely surrounds area code 514, which was confined to the Island of Montreal and a few surrounding islands, and so it is one of the six pairs of "doughnut area codes" in the numbering plan, and the only one in Canada (Toronto's area code 416 also borders Lake Ontario).
The numbering plan area (NPA), comprising only Northwestern Ontario, was created in early 1962 in an area code split of NPA 705. The main reason for the split was not central office prefix exhaustion, but routing efficiency for calls from Western Canada to northwestern Ontario. [citation needed] Major communities served by area code 807 include ...
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.