The UK telephone numbering plan, also known as the National Numbering Plan, is regulated by the Office of Communications (Ofcom), which replaced the Office of Telecommunications (Oftel) in 2003.
Following the changes in 1995, 2000 and 2001, the numbering range in use is as follows. Note that the initial '0' of a telephone number (called the trunk prefix) is not properly considered part of the area code, and thus (for example) 023 is a "two-digit" area code, the "0" prefixes national numbers and "00" international numbers.
These ranges have subscriber numbers beginning with the digits '0' or '1', eg:
In order to avoid confusion with codes beginning with these digits, the area code must always be dialled, even from within the same geographic exchange. Traditionally these have not been used for inbound calls, although these are now being allocated to some Voice over Internet Protocol (VoIP) services[citation needed]. Find current address and phone of anyone instantly. This has been problematic as some mobile phone operators in the UK do not allow access to these ranges, and there may also be difficulty accessing these numbers from outside the UK.
The 0500 range is used for some freephone services which were originally provided by Mercury Communications Ltd (now Cable & Wireless).
07xxx xxxxxx — mobile phones, pagers and personal numbering. Individual mobile phone companies are allocated different ranges within the 077xx, 078xx and 079xx area codes. Changes to mobile numbers were mostly straight replacements, such as Vodafone customers on the 0378 block became 07778.Since the advent of Mobile number portability, mobile prefixes can no longer be relied on to determine the current operator of a particular mobile number - only the original operator. UK telephone directory, Internet links and web sites in UK.
08xx — Non-geographic fixed-rate, or special-rate services, e. g. Many UK businesses employ this type of number because of extra benefits 08xx numbers can provide, such as fax to email, virtual office applications, and also because they are totally portable - if your business moves, the 08xx number can move with you. 09xxx xxxxxx — Premium rate services (costing more than 10p and up to £1. 50 per minute or costing more than 10p and up to £1. 50 per call). Numbers beginning 0908 and 0909 are reserved for sexual entertainment services. Web Pages.The Crown Dependencies of the Channel Islands (Jersey, Guernsey etc. ) and the Isle of Man are not part of the UK but, as a legacy of their postal and telephone services being operated by the UK GPO until 1969, they continue to form part of the UK numbering plan, using the following ranges:
GuernseyJerseyIsle of ManOn the Isle of Man, both fixed and mobile phone numbers can be dialled locally in the six-digit format.
Although calls from the UK to these islands are charged at the same rate as those to geographic numbers in the UK, calls to the Channel Islands may be excluded from calling plans offering unlimited UK fixed line calls.
Ofcom has also reserved certain number ranges for use in television dramas and films, so as to avoid the risk of people having their telephone numbers displayed, and receiving unwanted calls. This is similar to the use of fictitious telephone numbers in the United States with the digits 555. In most of the large cities with three-digit area codes a range of numbers is reserved, usually all the numbers starting with the digits 4960. For fictitious numbers in other areas the area code 01632 is reserved; this code is not in use, although 0632 was used for Newcastle upon Tyne until the late 1980s (63 = NE). All Rights Reserved. There are also reserved ranges for fictitious mobile, free and premium rate numbers.
Short codes beginning with 1 are reserved for telecom service providers' own functionality; some of the most well-known are codes for use with Caller ID, known in the UK as "Caller Display":
The UK has two free emergency numbers — the traditional 999, which is still widely used, and the EU standard 112, which can be used in all member states of the European Union. Both 999 and 112 are used to contact all emergency services: Police, Fire Service, Ambulance Service, Mountain Rescue, Coastguard and Cave Rescue. The chargeable number 101 (10p per call) is being introduced in stages, with an aim to cover all of England and Wales by 2008, for "non-urgent emergencies".
The operator is obtained via 100, while directory enquiries, formerly 192, is now provided in the 118xxx range, e. g. 118 500, 118 888, by different companies. Cordless Phones DECT UK - Lists suppliers of BT cordless phones, cheap digital cordless phones, and business phone systems. International Operator assistance is reached through "155".
Fixed line telephone subscribers have the opportunity to use an automated messaging service which takes messages when the called number is either engaged ("busy") or not answered within a given time. This can be accessed by calling 1571.
Since the early 1990s speaking clock services have been available throughout Britain, initially on 123, but now on 123456 (before this some areas used local clocks on numbers such as "8081"), but mobile networks sometimes allocate services such as voicemail or customer services to this number.
Two special telephone numbers within the regular code space have only eight digits, namely 0800 1111 the national ChildLine helpline, and 0845 4647 for NHS Direct medical advice.
The telephone service in the United Kingdom was originally provided by private companies and local councils. But by 1912–13 [1] all except the telephone service of Kingston upon Hull, Yorkshire and Guernsey had been bought out by the Post Office. Works with helplines to achieve the highest quality response to all those using telephone helplines. The Post Office also operated telephone services in Jersey until 1923 and the Isle of Man until 1969 when the islands took over responsibility for their own postal and telephone services - although the Isle of Man remained part of British Telecom until 1987.
Post Office Telecommunications was reorganised in 1980–81 [2] as British Telecommunications (British Telecom, or BT), and was the first nationalised industry to be privatised by the Conservative government. The Hull Telephone Department was itself reconstituted as Kingston Communications, in 1987; it was sold by Hull City Council in the late 1990s and celebrated its centenary in 2004.
In 1922 the first 'Director' telephone exchange was brought into service in Holborn, London and rolled out progressively across Greater London. A 3 digit code, represented by letters, identified the local exchange. Director schemes were gradually introduced in the other major cities of the UK--Birmingham, Edinburgh (although a relatively small city, it obtained all-figure dialling for political reasons), Glasgow, Liverpool and Manchester.
Subscriber Trunk Dialling (STD) was introduced in 1958 [3] to allow a caller to call another telephone directly instead of via a manual telephone exchange operator. Contact: telecoms@lse. Uniform exchange codes, usually called STD codes, were allocated for every exchange in the country, progressively as STD was rolled out. This process was not completed until 1979 [4].
The original concept was for STD to be a nationwide Director system, and in common with the Director system, the exchange codes were originally assigned based on two letters of the respective place's name and the corresponding numbers on a telephone dial. For example Aylesbury was given the STD code 0AY6, where the letter A can be found on the number 2 and the letter Y on the number 9. The letter O became a zero, such as for Bournemouth: 0BO2 where BO = 20. Originally, where a place's name began with the letter 'O' the code would begin with two zeros, such as Oxford: 0OX2 where OX = 09. These codes starting with '00' were later reallocated, freeing the prefix 00 for use by international direct-dialling. Information.
For the Director areas a 2 or 3 digit code was used for the city. These were:
The codes 071, 081, and 091 were reserved for later expansion, with the former two eventually being allocated to London (see below), and 091 to Tyne and Wear and Durham.
The use of names was intended to provide a mnemonic for the exchange, but as more and more places were given STD codes the mnemonic link became more and more obscure, and this system became unworkable. The use of alphabetic exchange (area) codes was abandoned in 1966 in favour of all figure numbering. As such about 60% of current area codes are still based on the original alphabetic STD.
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