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  1. 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.

  2. There is a set numbering plan for phone numbers within the United Kingdom, which is regulated by the Office of Communications , which replaced the Office of Telecommunications in 2003. Each number consists of an area code – one for each of the large towns and cities and their surroundings – and a subscriber number – the ...

  3. 12 mag 2024 · 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. Contents. Structure. Format. Geographic numbers.