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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.
Ontario and Quebec were the only provinces to be assigned multiple area codes at the inception of the continent-wide telephone numbering plan. Area code 416 has been split twice. The first came in 1953, when the western portion of 416 (including Kitchener) was combined with the southern portion of area code 613 to form area code 519 .
Area code 416, in the southern part of the province, was split in 1953 to form area code 519 in the western part of the province. In 1956, area code 705 was created from portions of the 613 and 519 numbering plan areas and served nearly all of Ontario north and west of the Golden Horseshoe . [ 1 ]
Technically, it was only necessary that no two prefixes within the same local calling area be duplicates, but the code protection as implemented reserved the numbers across both area codes. This meant that if an 819-number was being used in Hull, the corresponding 613-number could not be used anywhere in eastern Ontario, even in areas a safe ...
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).
The Canadian federal government's Innovation, Science and Economic Development Canada allots the individual call signs to the radio amateurs it licenses. There are 24 possible 2-letter prefixes and 240 2-letter/1-number prefixes available to Canadian operators based on the ITU blocks (CF–CK, CY–CZ, VA–VG, VO, VX–VY and XJ–XO).
Area code 807 is a telephone area code in the North American Numbering Plan (NANP) for the Canadian province of 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 ...
Central office code protection prevented the same seven-digit local number from being assigned in both Ottawa and Hull; thus if an exchange in 819-77x (819-PRovince) was in use in Hull, the corresponding 1-613-77x exchange could not be used anywhere in Eastern Ontario.