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

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

    Of the 16 area codes freed up for alternative use in the 1980s, at least 11 were re-used for other services. For example, the 0401 area code was re-allocated to Cellnet mobile services. Five of the area codes remained unused, including 01632, which is now partially reserved for fictitious telephone numbers. In 1995, the PhONEday changes for ...

  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 Ohio area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Ohio_area_codes

    In 2016, area code 614 was overlaid with 380 in the Columbus/Central Ohio area for the same reason. In 2020, 326 was added as an all services overlay for 937. Area code 283 was added as an overlay for 513 on April 28, 2023. [2] [3] Area code 436 went into service on March 1, 2024, as an overlay of 440. [4]

  5. List of dialling codes in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/List_of_dialling_codes_in...

    Unlike the Crown Dependencies of Jersey, Guernsey and the Isle of Man which use the UK area codes 01534, 01481 and 01624, respectively, telephone numbers in British Overseas Territories do not come under the UK telephone numbering plan. Some are within the North American Numbering Plan (NANP). These calls are treated as international calls.

  6. 1828 in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/1828_in_the_United_Kingdom

    8 November – Thomas Bewick, wood-engraver and writer on natural history (born 1753) 4 December – Robert Jenkinson, 2nd Earl of Liverpool, statesman, Prime Minister 1812–1827 (born 1770) 22 December – William Hyde Wollaston, chemist (born 1766) William Billingsley, porcelain painter (born 1758)

  7. Original North American area codes - Wikipedia

    en.wikipedia.org/wiki/Original_North_American...

    In 1951, the number of area codes grew to ninety: the State of New York gained area code 516 on Long Island, and Southern California received area code 714, to reduce the numbering plan area of Los Angeles. [23] Area code handbook issued by many telephone companies in 1962 to promote the newly introduced direct distance dialing.

  8. Area codes 440 and 436 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_440_and_436

    In December 2022, the Public Utilities Commission of Ohio announced a projection that the pool of available telephone numbers for the 440 area code would be exhausted by the third quarter of 2024. The Commission approved a plan of relief action which prescribes an all-service overlay in the numbering plan area with the new area code 436.

  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.