phone-number

A phone number is a series of digits that can be used to place a voice call or send a text message to a landline or mobile phone. This page exists to document efforts to parse, standardise and understand phone numbers.

microformats

Phone numbers can be represented using the tel property in both h-card and the legacy hCard formats.

parsers

libphonenumber

libphonenumber is a C++, Java and JavaScript library created by Google that attempts to validate phone numbers.

There are wrappers in a variety of languages:

• python-phonenumbers (Python)
• global_phone (Ruby)
• libphonenumber-for-php (PHP)
• libphonenumber-csharp (C#)
• libPhoneNumber-iOS (Objective-C/iOS)

lookup services

Twilio provide a lookup service to validate phone numbers.