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  2. 0151 - Wikipedia

    en.wikipedia.org/wiki/0151

    Download QR code; Print/export Download as PDF; Printable version; In other projects Wikidata item; ... 0151 may refer to: The telephone dialling code for ...

  3. PhONEday - Wikipedia

    en.wikipedia.org/wiki/PhONEday

    PhONEday had cleared area codes from 02 to 09 of all geographic allocations by converting 9-digit numbers to 10-digit 01 numbers (and, in parts of at least 47 area codes, 8-digit numbers to 9-digit 01 numbers). After PhONEday, all pre-existing 9-digit mobile, non-geographic, premium rate, personal and pager numbers from 02 to 09 remained in place.

  4. File:United States Frequency Allocations Chart 2016 - The ...

    en.wikipedia.org/wiki/File:United_States...

    Original file (6,300 × 4,031 pixels, file size: 952 KB, MIME type: application/pdf) This is a file from the Wikimedia Commons . Information from its description page there is shown below.

  5. History of telephone numbers in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/History_of_telephone...

    On PhONEday in 1995, 0387 became 01387 and 03873 became 013873 and these codes are still in use today. The remainder of the "mixed" area code allocations and their history are detailed in the table below. Of the 11 area codes freed up for alternative use in the 1980s, only 5 were actually re-used for other services.

  6. Telephone numbers in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_the...

    STD codes are two, three, four or, exceptionally, five digits long (after the initial zero). Regions with shorter area codes, typically large cities, permit the allocation of more telephone numbers as the local number part has more digits. Local customer numbers are four to eight digits long. The total number of digits is ten or, very rarely, nine.

  7. List of channel numbers assigned to FM frequencies in North ...

    en.wikipedia.org/wiki/List_of_channel_numbers...

    In the Americas (defined as International Telecommunication Union (ITU) region 2), the FM broadcast band consists of 101 channels, each 200 kHz wide, in the frequency range from 87.8 to 108.0 MHz, with "center frequencies" running from 87.9 MHz to 107.9 MHz.

  8. ITU prefix - Wikipedia

    en.wikipedia.org/wiki/ITU_prefix

    Linked country codes are from ISO 3166-1. Series allocated to an international organization. Provisional allocation in accordance with No. S19.33: "Between radiocommunication conferences, the Secretary-General is authorized to deal with questions relating to changes in the allocation of series of call signs, on a provisional basis, and subject ...

  9. Big Number Change - Wikipedia

    en.wikipedia.org/wiki/Big_Number_Change

    Some widespread misunderstandings about area codes came about with the Big Number Change, most notably with London area codes. There is a widespread but erroneous assumption that London has several area codes – 0203, 0204, 0207 and 0208 – whereas, in fact, it has just one: 020. Similar misunderstandings came about with a few other area codes.