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  2. KOYN - Wikipedia

    en.wikipedia.org/wiki/KOYN

    Former call signs. KSMP (1987–1988) Technical information [1] Licensing authority. FCC: Facility ID: 7992: ... United States, the station serves the Paris, Texas area.

  3. 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]

  4. List of country calling codes - Wikipedia

    en.wikipedia.org/wiki/List_of_country_calling_codes

    Worldwide distribution of country calling codes. Regions are coloured by first digit. Country calling codes, country dial-in codes, international subscriber dialing (ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks.

  5. Long-distance calling - Wikipedia

    en.wikipedia.org/wiki/Long-distance_calling

    A long-distance call is therefore known not as a "toll call" but as a trunk call. It traditionally carried a higher rate ("national rate" instead of "local rate") and requires a trunk prefix and area code be dialled before the number. A trunk call is prefixed with '0' for national calls and '00' for international calls, following the European ...

  6. KZHN - Wikipedia

    en.wikipedia.org/wiki/KZHN

    Former call signs. KPRE (1950–1990) KGDD (1990–1999) KPJC (1999–2005) ... Licensed to Paris, Texas, United States, the station serves the Paris area. The ...

  7. Telephone number - Wikipedia

    en.wikipedia.org/wiki/Telephone_number

    The dialing procedures (dialing plan) in some areas permit dialing numbers in the local calling area without using an area code or city code prefix. For example, a telephone number in North America consists of a three-digit area code, a three-digit central office code, and four digits for the line number.

  8. Telephone numbering plan - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbering_plan

    This means that to call another number within the same city or area, callers need to dial only a subset of the full telephone number. For example, in the NANP, only the seven-digit number may need to be dialed, but for calls outside the local numbering plan area, the full number including the area code is required.

  9. Telephone prefix - Wikipedia

    en.wikipedia.org/wiki/Telephone_prefix

    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.