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  2. Area codes 450, 579, and 354 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_450,_579,_and_354

    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).

  3. Area codes 905, 289, 365, and 742 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_905,_289,_365...

    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 ...

  4. Area codes 407 and 689 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_407_and_689

    Area code 407 was created in 1988 in a split of area code 305, [1] Florida's original area code of 1947. When assigned, 407 included not only most of Central Florida, but also the Palm Beaches and Treasure Coast. In 1996, Palm Beach, Martin, Indian River, and St. Lucie counties were split from the number plan area and received area code 561.

  5. North American Numbering Plan - Wikipedia

    en.wikipedia.org/wiki/North_American_Numbering_Plan

    Area code handbook issued by many telephone companies in 1962 to promote the newly introduced direct distance dialing. From the Bell System's beginnings in 1876 and throughout the first part of the 20th century, telephone networks grew from essentially local or regional telephone systems.

  6. List of international call prefixes - Wikipedia

    en.wikipedia.org/wiki/List_of_international_call...

    This is a list of international dialing prefixes used in various countries for direct dialing of international telephone calls.These prefixes are typically required only when dialling from a landline, while in GSM-compliant mobile phone (cell phone) systems, only the symbol + before the country code may be used [citation needed] irrespective of where the telephone is used at that moment; the ...

  7. Area code 807 - Wikipedia

    en.wikipedia.org/wiki/Area_code_807

    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 ...

  8. Area code 780 - Wikipedia

    en.wikipedia.org/wiki/Area_code_780

    Area code 780 is also the last new area code in Canada to be introduced by a split. Within a decade, area code 780 was close to exhaustion once again, along with area 403 in the south. The solution for mitigation was to implement a complex overlay for the entire province, extending over both numbering plan areas, with the new area code 587.

  9. Area codes 819, 873, and 468 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_819,_873,_and_468

    Area codes 819, 873, and 468 are overlay telephone area codes in the North American Numbering Plan (NANP) for central and western Quebec, Canada, including the Quebec portion of the National Capital Region, and the Hudson Strait and Ungava Bay coastlines of Quebec.