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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]
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New York City: Manhattan only; overlays with 212, 332, and 917 680: 2017: Syracuse, Utica, Watertown, and north central New York; overlay of 315 716: 1947 Buffalo, Dunkirk-Fredonia, Olean, Jamestown, Niagara Falls, Tonawanda and western New York; will be overlaid by 624 in 2024 718: 1984 New York City: all except Manhattan; overlays with 347 ...
For the next 37 years, New York City was one of the largest toll-free calling zones in North America. On February 1, 1984, in response to a request from New York Telephone, the New York Public Service Commission voted to create a second area code for New York City. The split was implemented in a way that divided the city's three million ...
New York Telephone was an AT&T subsidiary until the AT&T breakup effective January 1, 1984. At that time, New York Telephone, along with the New England Telephone & Telegraph Company, became part of a Regional Bell operating company named NYNEX. The company was referred to as "New York Telephone, a NYNEX Company" before being called simply ...
Marble Hill, a neighborhood of the borough of Manhattan, is physically located on the U.S. mainland, adjacent to the Bronx. Despite being legally a part of the borough of Manhattan, [9] per the Greater New York Charter of 1897, the neighborhood of Marble Hill is excluded from the Manhattan numbering plan areas 212, 646, and 332, instead using the 718, 347, and 929 area codes. [9]
The red fields are the NPAs that hosted the Regional Centers for toll-switching established in the General Toll Switching Plan of 1929: [2] New York City (212), Los Angeles (213), Dallas (214), Chicago (312), St. Louis (314), and San Francisco (415) in the multi-NPA states, and in Denver (303) and Atlanta (404) in states with just a single area ...
When it was established, all cellphones in New York City were switched to 917, freeing up telephone numbers for additional landlines. [3] Shortly after the establishment of the 917 code, the FCC ruled that restriction of area codes to particular types of service was prohibited, but the instance of 917 remained exempt. [citation needed]