regex for phone number.

Hi Guy’s Welcome to Proto Coders Point. In this article let’s checkout a regular expression for phone number validation.

I want a regex that matches following phone number pattern string:-

  • XXXXXXXXXX -> 10 digit mobile number validation.
  • +91 XXXXXXXXXX -> Country code + 10 digit phone number.
  • (XXX) XXX XXXX -> Phone number with brackets separator.
  • (XXX) XXX-XXXX -> Number with brackets & dash separator.
  • XXX-XXX-XXXX -> Phone Number with dash separator.

and much more.

5 Common Cat Behaviours And What Th...
5 Common Cat Behaviours And What They Mean
Common Phone number group

  • Group1: Country Code (e.g. 1 or 86).
  • Group2: Area Code (e.g. 808).
  • Group3: Exchange (e.g. 555).
  • Group4: Subscriber Number (e.g.1234).
  • Group5: Extension (e.g. 5678).

Regular Expression for phone number validation

International phone number regex

^\s*(?:\+?(\d{1,3}))?[-. (]*(\d{3})[-. )]*(\d{3})[-. ]*(\d{4})(?: *x(\d+))?\s*$

Explanation of above phone number regex

^\s*Starting line , accept white space at beginning.
(?:\+?(\d{1,3}))?Match country code, here ‘?’ makes it optional. remove ‘?’ to validate phone number and make it mandatory.
[-. (]*Match special character like bracket which may appear between the country code & area code.
(\d{3})Area code of 3 digit in phone number string. add ‘?’ at end to make area code optional.
[-. )]*Match special character like bracket which may appear between the country code & area code.
(\d{3})Exchange Number of 3 digit in phone regex string. add ‘?’ at end to make area code optional.
[-. ]*Match special character like dash which may appear between.
(\d{4})Subscriber number of 4 digit in phone number string.
(?: *x(\d+))?Optional Extensional Number.
\s*$Accept any white space at ending of phone number string.