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Country code. 44. International access. 00. Long-distance. 0. List of United Kingdom dialing codes. 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 ...
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.
All area codes begin with the number 0. The operator code for fixed (landline) numbers is "y". "zzzzzz" denotes the primary telephone number, which has six digits. Mobile numbers start with the mobile operator code (which begins from 07X, followed by seven digits for the main telephone number).
Despite these rationalisations, there remains no standard format or length for a UK area code or telephone number, and there are misunderstandings in code areas which have seen alterations to customers' individual telephone numbers.
E.164 specifies that a telephone number consist of a country code and a national telephone number. National telephone numbers are defined by national or regional numbering plans, such as the European Telephony Numbering Space, the North American Numbering Plan (NANP), or the UK number plan .
E.164 defines a general format for international telephone numbers. Plan-conforming telephone numbers are limited to only digits and to a maximum of fifteen digits. [1] The specification divides the digit string into a country code of one to three digits, and the subscriber telephone number of a maximum of twelve digits.
List of country calling codes. Worldwide distribution of country calling codes. Regions are coloured by first digit. 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 ...
List of United Kingdom codes. 020 is the national dialling code for London in the United Kingdom. All subscriber numbers within the area code consist of eight digits and it has capacity for approaching 100 million telephone numbers. The code is used at 170 telephone exchanges in and around Greater London as part of the largest linked numbering ...
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 ...
The telephone area code for most of Greater London and some surrounding areas is 020, not "0207", "0208" or "0203". [2] A study was commissioned in 2005 which found that only 13 per cent of respondents correctly identified the 020 code for London without prompting: 59 per cent incorrectly identified it as "0207" or "0208". [3]