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  2. 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]

  3. Fort Worth Spinks Airport - Wikipedia

    en.wikipedia.org/wiki/Fort_Worth_Spinks_Airport

    Fort Worth Spinks Airport covers an area of 822 acres (333 ha) at an elevation of 700 feet (213 m) above mean sea level.It has two runways: 18R/36L is 6,002 by 100 feet (1,829 x 30 m) with an asphalt surface; 18L/36R is 3,660 by 60 feet (1,116 x 18 m) with a turf surface.

  4. Area code 878 - Wikipedia

    en.wikipedia.org/wiki/Area_code_878

    The first 878 numbers were assigned in April 2013, nearly 12 years after the overlay was activated. [3] On September 15, 2015, the first prefix (999) was assigned in the 412 territory. [4] As of February 2020, Verizon is issuing 878 telephone numbers for 412's original territory.

  5. Area code 724 - Wikipedia

    en.wikipedia.org/wiki/Area_code_724

    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 ...

  6. North American Numbering Plan - Wikipedia

    en.wikipedia.org/wiki/North_American_Numbering_Plan

    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.

  7. CLLI code - Wikipedia

    en.wikipedia.org/wiki/CLLI_code

    Telephone companies often give names to their central offices. [9] The names frequently relate to the name given to the exchanges served from that office in the days of two-letter, five-number dialing, where a telephone number might have been referred to as "MOhawk 3-1234". The numbers are now listed as all-figures, so (713) MOhawk x-xxxx ...

  8. Allegheny County Airport - Wikipedia

    en.wikipedia.org/wiki/Allegheny_County_Airport

    Allegheny County Airport (IATA: AGC, ICAO: KAGC, FAA LID: AGC) is in West Mifflin, Pennsylvania, United States, 7 miles (11 km) southeast of Pittsburgh. It is the fifth-busiest airport in Pennsylvania following Philadelphia , Pittsburgh , Allentown , and Harrisburg .

  9. Rate center - Wikipedia

    en.wikipedia.org/wiki/Rate_center

    Local number portability allows a number to be moved to a different carrier or a different wire center within the same rate center. [4] A landline provider typically will not allow a cross-town move to a different rate center under the same number at standard rates; possible alternatives include expensive foreign exchange service or a nomadic class of service such as voice over IP or a mobile ...

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