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This is a list of telephone dialling codes in the United Kingdom, which adopts an open telephone numbering plan for its public switched telephone network. The national telephone numbering plan is maintained by Ofcom , an independent regulator and competition authority for the UK communications industries.
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.
In the UK, hospitals have standardised codes across individual NHS trusts (England and Wales) and health boards (Scotland), but there are not many standardised codes across the entire NHS.
Different codes were used for STD and local dialling. Because of this, telephone numbers were usually still stated with the exchange name and subscriber number, e.g. 'Blackawton 299', to allow callers to look up the appropriate code for their call. Local dialling codes
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.
A non-geographic number is a type of telephone number that is not linked to any specific locality. Such numbers are an alternative to the traditional 'landline' numbers that are assigned geographically using a system of location-specific area codes.
Calling codes in Europe. Telephone numbers in Europe are managed by the national telecommunications authorities of each country. Most country codes start with 3 and 4, but some countries that by the Copenhagen criteria are considered part of Europe have country codes starting on numbers most common outside of Europe (e.g. Faroe Islands of ...
When dialling a UK number from abroad, the zero must be omitted. Because of this, it has become common (but incorrect) practice to write telephone numbers used both nationally and internationally with the 0 in parentheses, for example: +44 (0)20 7946 0234; if the number is dialled with the parenthesised zero, the call will fail.
Therefore, all area codes have a preceding 0 (zero) when dialling from within the United Kingdom. When dialling a UK number from abroad the zero must not be included, but replaced by the calling country's international call prefix followed by the 44, the country code for the UK.
This is a list of geographic UK dialling codes covering Wales that are currently in use. Some exchanges cover both sides of the Wales-England border. All geographic telephone numbers in Wales are in the format (01xxx) xxxxxx, with the exception of Cardiff and the surrounding area which has been (029) xxxx xxxx since the "Big Number Change" in ...