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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]
Montreal. Area codes 514, 438, and 263 are telephone area codes of the North American Numbering Plan (NANP) for Montreal and most of its on-island suburbs, specifically the Island of Montreal and Île Perrot in the Canadian province of Quebec. Area code 514 was one of the original North American area codes assigned by AT&T in 1947.
The North American Numbering Plan (NANP) divides the territories of its members into geographic numbering plan areas (NPAs). Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits.
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).
Merged into the Bank of Montreal. [58] Bank of Canada (1st) 1818 1831 Merged into the Bank of Montreal. [59] Bank of Clifton 1859 1863 Reincarnation of Zimmerman Bank. Closed. [60] Bank of the County of Elgin 1855 1862 Closed. [61] Bank of Fredericton 1836 1839 Merged into the Commercial Bank of New Brunswick. [62] Bank of Hamilton: 1872 1923
More than 300 area codes exist in the United States alone which is a target-rich environment for phone scammers. The good news is that scam callers will often show up under common area codes for ...
A telephone prefix is the first set of digits after the country, and area codes of a telephone number. In the North American Numbering Plan countries (country code 1), it is the first three digits of a seven-digit local phone number, the second three digits of the 3-3-4 scheme. In other countries, both the prefix and the number may have ...
By that date, all telephone callers, even those in area codes that did not yet have interchangeable central office codes, would be required to dial all ten digits for long-distance calls, including such calls within the same area code. Canadian telephone companies made the change in Fall 1994 outside of area code 905, which had already ...