The official Ofcom definitions and historic, pre BT definitions are also given for information. Phone Numbers In Depth More detail on a range of telephone numbering topics, including area codes and special prefixes, phone numbers for business, scam warnings and more.
Formatting and Presentation Advice The ins and outs of how to correctly display a phone number in print, on a website, or on a sign. Short Codes and Special Numbers A list of the most common special short codes currently in use, such as the and services. Guide to UK phone numbers List of area codes and prefixes Mobile phone numbers International calling codes Call cost guide Number formatting rules.
Toll Free Prefixes List
UK area codes List of dialling codes and phone prefixes Telephone numbers starting 01 and 02 Numbers that start with 01 or 02 are typically used for home or business landlines. In addition to country codes, some countries also have city codes that you dial after the country code but before the local number. Print "What do digits in phone numbers mean? How MagicJack Works.
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Area code - Regulated by the Federal Communications Commission FCC , area codes are used to designate a specific geographic region, such as a city or part of a state. Prefix - The prefix originally referred to the specific switch that a phone line connected to.
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Each switch at a phone carrier's central office had a unique three-digit number. With the arrival of computerized switches, many systems now allow local number portability LNP.
This means that a customer's phone number can be moved to another switch without having to change any part of it, including the prefix, as long as the customer does not move out of the local-rate area.