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wizard04 on 07/31/08

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Regular Expressions for U.S. Phone Numbers

/ Published in: Regular Expression

(Created for JavaScript)

These are rather forgiving. Spaces, dashes, or periods are allowed as separators. Extensions can be recognized by several strings (#, x, x., ext, ext., extension).

Area code: $1$2
Exchange code: $3
Station code: $4
Extension / Extra characters: $5

Separators are not accepted within the $3$4$5 portion of a vanity number.

Example: (540) 555-0123 ext.678 --> `($1$2) $3-$4 ext.$5`
Example: 1-800-GOODFOOD --> `1-$1$2-$3$4$5`

Highlighted TextExpand

//10-digit phone number
^(?:\+?1\s*(?:[.-]\s*)?)?(?:$\s*([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9])\s*$|([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]))\s*(?:[.-]\s*)?([2-9]1[02-9]|[2-9][02-9]1|[2-9][02-9]{2})\s*(?:[.-]\s*)?([0-9]{4})$

//10-digit phone number, extension allowed
^(?:\+?1\s*(?:[.-]\s*)?)?(?:$\s*([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9])\s*$|([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]))\s*(?:[.-]\s*)?([2-9]1[02-9]|[2-9][02-9]1|[2-9][02-9]{2})\s*(?:[.-]\s*)?([0-9]{4})(?:\s*(?:#|x\.?|ext\.?|extension)\s*(\d+))?$

//7 or 10-digit phone number
^(?:(?:\+?1\s*(?:[.-]\s*)?)?(?:$\s*([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9])\s*$|([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]))\s*(?:[.-]\s*)?)?([2-9]1[02-9]|[2-9][02-9]1|[2-9][02-9]{2})\s*(?:[.-]\s*)?([0-9]{4})$

//7 or 10-digit phone number, extension allowed
^(?:(?:\+?1\s*(?:[.-]\s*)?)?(?:$\s*([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9])\s*$|([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]))\s*(?:[.-]\s*)?)?([2-9]1[02-9]|[2-9][02-9]1|[2-9][02-9]{2})\s*(?:[.-]\s*)?([0-9]{4})(?:\s*(?:#|x\.?|ext\.?|extension)\s*(\d+))?$

//10-digit phone number, vanity (alphanumeric) allowed
^(?:\+?1\s*(?:[.-]\s*)?)?(?:$\s*([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9])\s*$|([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]))\s*(?:[.-]\s*)?([2-9a-z]1[02-9a-z]|[2-9a-z][02-9a-z]1|[2-9a-z][02-9a-z]{2})([0-9a-z]{4})$

//10-digit phone number, vanity allowed, extra characters allowed at end
^(?:\+?1\s*(?:[.-]\s*)?)?(?:$\s*([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9])\s*$|([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]))\s*(?:[.-]\s*)?([2-9a-z]1[02-9a-z]|[2-9a-z][02-9a-z]1|[2-9a-z][02-9a-z]{2})([0-9a-z]{4})([0-9a-z]*)$

URL: http://en.wikipedia.org/wiki/North_American_Numbering_Plan

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