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  2. Area codes 416, 647, and 437 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_416,_647,_and_437

    The numbers were dialled with two letters and four digits (2L-4N). For example, GRover 1234 was dialled GR1234 (or 471234). Conversion to seven-digit (2L-5N) format began in 1951, and continued up to the introduction of direct distance dialling (DDD) in 1958. Toronto numbers that were converted from 2L-4N format, or from manual service, include:

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

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

    The numbering plan area surrounds the city of Toronto (area codes 416/647/437), leading locals to refer to the primarily suburban cities surrounding Toronto as "the 905" or "905 belt". It is bound by the 519/226/548/382 overlay area in the west, 705/249/683 in the north, 613/343/753 in the east, and Western New York State's 716/624 area on the ...

  4. Telephone numbers in Canada - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Canada

    Canadian (and other North American Numbering Plan) telephone numbers are usually written as (NPA) NXX-XXXX. For example, 250 555 0199, a fictional number, could be written as (250) 555-0199, 250-555-0199, 250-5550199, or 250/555-0199. The Government of Canada's Translation Bureau recommends using hyphens between groups; e.g. 250-555-0199. [2]

  5. Area codes 514, 438, and 263 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_514,_438,_and_263

    When the Bell System implemented direct distance dialing (DDD) for content-wide service using a seven-digit local telephone number, prefixed by a three-digit area code, Montreal and Toronto, the largest Canadian cities, still used six-digit (2L-4N) numbering plans.

  6. Telephone exchange names - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange_names

    Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]

  7. List of North American Numbering Plan area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_North_American...

    Ontario (Niagara Falls Region (including St. Catharines), Hamilton, and Greater Toronto Area, except for Toronto) October 4, 1993: prior to 1991, was the area code for Mexico City; split of 416; 2001: overlaid by 289; 2013: overlaid by 365; 2021: overlaid by 742 [8] 537 reserved as a fifth area code for the region. 906

  8. Direct distance dialing - Wikipedia

    en.wikipedia.org/wiki/Direct_Distance_Dialing

    The first direct-dialed long-distance telephone calls were possible in the New Jersey communities of Englewood and Teaneck.Customers of the ENglewood 3, ENglewood 4 and TEaneck 7 exchanges, who could already dial telephone numbers in the New York City area, could place calls to eleven major cities across the United States by dialing the three-digit area code and the seven-digit directory number.

  9. Area codes 613, 343, and 753 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_613,_343,_and_753

    The main incumbent local exchange carrier in area code 613 is Bell Canada, but there are some five independent companies serving rural exchanges: the Lansdowne Rural Telephone Company, serving Lansdowne; [8] the North Frontenac Telephone Company, serving Sharbot Lake and Parham; [9] the North Renfrew Telephone Company, serving Beachburg, Westmeath, and the area outside Pembroke; [10] the ...