A comprehensive regex for phone number validation

Posted by Nicholas Trandem on Stack Overflow See other posts from Stack Overflow or by Nicholas Trandem
Published on 2008-09-23T20:13:42Z Indexed on 2010/06/01 0:13 UTC
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regex

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validation

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phonenumbers

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telephone

I'm trying to put together a comprehensive regex to validate phone numbers. Ideally it would handle international formats, but it must handle US formats, including the following:

1-234-567-8901
1-234-567-8901 x1234
1-234-567-8901 ext1234
1 (234) 567-8901
1.234.567.8901
1/234/567/8901
12345678901

I'll answer with my current attempt, but I'm hoping somebody has something better and/or more elegant.

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