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Find the telephone dialling codes for different areas and services in the United Kingdom, based on the official standard maintained by Ofcom. Learn the history and changes of the UK phone code system, from the international prefix 00 to the area codes 01, 02, and 03.
Learn about the structure, format and history of UK telephone numbers, including the country code 44 and the dialling codes for different regions and services. Find out how to call the UK from abroad and how to use the National Telephone Numbering Plan.
Learn about the different types of non-geographic numbers in the UK, such as 0808, 03, 084, 087 and 09. Find out how they work, how they are charged and how to call them from abroad.
Learn about the different types and uses of premium-rate telephone numbers, which charge callers higher prices for select services. Find out how to identify and block these numbers in various countries, including Austria, where 0901 is the prefix for per call tariffs.
Short codes are short digit-sequences used to address messages in SMS and MMS systems of mobile network operators. Learn how short codes are designed, billed, and regulated in different countries and regions, such as the EU, US, Canada, and India.
999 is the official emergency number for the United Kingdom and other countries, allowing the caller to contact emergency services for assistance. Learn about the history, distribution, and usage of 999, as well as alternative numbers and services in the UK.
Find out the telephone prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks. The list is organized by world zones and includes the ITU-T standards and the exceptions for political and historical alignment.
Learn how UK telephone numbers evolved from manual to automatic exchanges, from local codes to area codes, and from geographic to special services. The web page covers the origins, subscriber numbers, director system, and renumbering exercises of UK telephone numbers.