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Regular Expression Details

Title Test Find UK Phone Number in 5-4-2 Format
Expression
^[\d]{5}[-\s]{1}[\d]{4}[-\s]{1}[\d]{2}$
Description
Allows dashes or spaces to separate.
Matches
0800 4444 22 | 0870-4444-22 | 0844 4444-22
Non-Matches
0800444422 | 0800=4444=22 | 0800 4444 22
Author Rating: Not yet rated. Matthew Harris
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Existing User Comments

Title: UK system has multiple formats.
Name: Steve.
Date: 11/4/2011 5:31:14 AM
Comment:
Most UK telephone numbers can have either 9 or 10 digits after the 0 trunk prefix. The initial 0 is omitted when calling from abroad. 01 and 02 area codes should have parentheses around them if the local number part does not begin with a 0 or 1. 01 and 02 area codes do not have parentheses around them if the local number part begins with a 0 or 1. These are National Dialling Only ranges. All other area codes do not have parentheses around them as the area code is required for all calls. Number formats are expressed as: 2+8 to represent (02x) xxxx xxxx [in 5 areas] or 05x xxxx xxxx or 070 xxxx xxxx or 076 xxxx xxxx. 3+7 to represent (011x) xxx xxxx [in 6 areas] or (01x1) xxx xxxx [in 6 areas] or 03xx xxx xxxx or 08xx xxx xxxx or 0800 xxx xxxx or 09xx xxx xxxx. 3+6 to represent 0500 xxxxxx or 0800 xxxxxx. 4+6 to represent (01xxx) xxxxxx [in 580 areas] or 07xxx xxxxxx. 4+5 to represent (01xxx) xxxxx [in 41 areas]. 5+5 to represent (01xx xx) xxxxx [in 12 areas]. 5+4 to represent (01xx xx) xxxx [in 1 area]. Valid formats include: (011x) - 3+7. (01x1) - 3+7. (01xxx) - 4+6 or 4+5. (01xx xx) - 5+5 or 5+4. (02x) - 2+8. 03xx - 3+7. 05x - 2+8. 0500 - 3+6. 07xxx - 4+6. 070 - 2+8. 076 - 2+8. 08xx - 3+7. 0800 - 3+7 or 3+6. 09xx - 3+7. There are a small number of exceptions such as 0800 1111 and 0845 4647. The UK system is quite complex!


Title: Format not valid.
Name: Steve
Date: 9/27/2011 6:40:35 AM
Comment:
5-4-2 is not a valid UK format, certainly not for 0800 numbers (which you have shown in the examples as 4-4-2 and this is also not a valid format).


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