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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]
This is a list of telephone area codes of Pennsylvania. ... Pittsburgh and its immediately surrounding areas in Allegheny County: 445: 215 [b], 267: 484: 610 [b], 835:
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 ...
Area code 412 is a telephone area code in the North American Numbering Plan (NANP) for the Commonwealth of Pennsylvania. The numbering plan area (NPA) comprises the city of Pittsburgh , most of surrounding Allegheny County , and small portions of Washington and Westmoreland counties.
Within only two years, both 724 and 412 were nearing exhaustion due to rapid growth of telecommunication services in the Pittsburgh area from proliferation of cell phones and pagers. By this time, overlays had gained more acceptance, and area code 878 was implemented as an overlay complex with both the 412 and 724 territories on August 17, 2001 ...
The Glenn Miller tune PEnnsylvania 6-5000 refers to telephone number PE6-5000, a number in service at the Hotel Pennsylvania (212 736-5000) in New York City until the hotel's closing in 2020. Similarly, the movie BUtterfield 8 is set in the East Side of Manhattan between roughly 64th and 86th Streets, where the telephone prefixes include 288.
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Algard was searching for a friend's contact information, and the phone company gave him the wrong number. [4] He thought of an online email directory as an easier way to find people. [5] [6] Algard bought the Whitepages.com domain for $900, [7] [8] which he says was all of his savings at the time. [5]