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Telephone numbers are of variable length. Local numbers are supported from landlines. Numbers can be dialled with a '0'-lead prefix that denotes either a geographical region or another service. Mobile phone numbers have distinct prefixes that are not geographic, and are portable between providers.
As of 2020, 52 exchanges still have five-digit subscriber numbers of which a dozen places also have unusually long STD codes. One area with a long STD code retains four-digit local numbering (see Telephone Numbers in the United Kingdom for examples).
Numbers beginning 01 or 02 are normal phone numbers for home and business telephone lines. These numbers are always split into two parts: The area code comes first, and is linked to a specific part of the country. For example, the 020 area code is for London and the 0121 code is for Birmingham.
There is a set numbering plan for phone numbers within the United Kingdom, which is regulated by the Office of Communications ( Ofcom ), which replaced the Office of Telecommunications ( Oftel) in 2003.
Jul 19, 2023 · The first telephone exchange in the United Kingdom was established in London in 1879. Initially, phone numbers were not standardised, and users could request numbers of varying lengths. However, as the number of subscribers increased, a standardised numbering system became essential to ensure efficient communication. Nationwide Numbering System.
This is a list of dialling codes for telephones in the United Kingdom. Dialling codes are the basis for the national telephone numbering plan. They are prefixed to all telephone numbers, generally depending on the type of number and its geographic location. The numbering plan is maintained by Ofcom, which is an independent communications authority.
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6 days ago · In the United Kingdom, telephone numbers are administered by the Office of Communications ( Ofcom ). For this purpose, Ofcom established a telephone numbering plan, known as the National Telephone Numbering Plan, which is the system for assigning telephone numbers to subscriber stations.
