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Reason for the change


All these areas have come close to running out of available telephone numbers. The traditional method to relieve this situation is to lengthen numbers - such as in London where 7-digit local numbers were replaced with 8-digit numbers during 2000.

The method now favoured by regulator Ofcom is to require individuals to include the code when dialling local numbers, thus allowing previously unusable local phone numbers beginning with 0 or 1 to be used.

Although the facility to dial locally without the code is lost, it is considered that the fact numbers themselves do not actually change results in less upheaval for consumers and businesses.

How it works
Prior to the change only the local numbers 200000 to 998999 were available for use in each area, as numbers beginning with '0' or '1' or '999' conflicted with the area codes and special services that begin with these digits.

More specifically, the first digit dialled is used by landline phone networks to determine what type of number is being called:

  • A '0' signifies an out-of-area or international call
  • A '1' indicates a special service such as the operator on 100
  • Any other digit is recognised as a local phone number
Accordingly, local phone numbers beginning with '0' or '1' have not been issued as there is no way to dial them without the code; the network could not tell if somebody dialling '012345' required the local number 012345, or was trying to connect to a number in the Bedford (01234) area code, for example.

These conflicts are removed if the facility for dialling locally without the code is removed and all numbers are dialled in full.

Bringing local numbers beginning '0' and '1' into use increases the amount of numbers available locally by about 25%.


How did numbers run out?
There are a few main reasons why these areas have run out of numbers:

  • Growing overall demand for telephone numbers, with individual large businesses often consuming blocks of several thousand numbers each.
  • New sources of demand for landline numbers following the relaxation of rules on their use. This includes demand for use with VOIP services such as Skype, for mobile phones and as 'virtual' numbers used by companies based outside the area but wishing to acquire a local number.
  • Technological limitations meaning that numbers have to be issued to the dozens of different phone companies in blocks of at least 1,000 numbers. Ten phone companies would consume 10,000 numbers even if they only had a handful of customers between them.
  • Failure to address shortages during earlier national renumbering. Areas such as London, Southampton and Northern Ireland were moved to new area codes but, for unknown reasons, other areas were not dealt with.

  • Further changes in the future
  • Removing local dialling only releases a small pool of additional numbers, which is expected to last between 5 and 10 years.

    After these numbers are used up, it is likely the area will be given a second batch of numbers beginning with a different area code. This means some numbers will begin with the area's original code, while others may begin with completely different digits. This situation does not exist anywhere else in the UK as yet, although it is common in other countries. For example, telephone numbers in central New York can begin with any of three area codes: 212, 646 and 917.

Recommended for You

SIRF 2014
Stockton Weekender 2014
Whats On !!

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   - Teesside Steel
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   - Head Wrightsons Ironworks
   - Tees Transporter Bridge

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