Phone Number Regex

Regex stands for Regular Expression and it's a pattern of characters in a specific format that can act as a rule and can be used to check adherence or match of an input text to the rules. A phone regex is a pattern for matching phone numbers.

Example of a phone number regular expression is ^(\+\d{1,3}( )?)?1?\-?\.?\s?((\(\d{1,6}\))|\d{1,6})[- .]?\d{3,6}[- .]?\d{4,8}}}$ This regex pattern matches any phone number of all country formats.

E.164 is the international telephone numbering plan that ensures each device on the PSTN has globally unique number. This number allows phone calls and text messages can be correctly routed to individual phones in different countries. E.164 numbers are formatted [+] [country code] [subscriber number including area code] and can have a maximum of fifteen digits. E. 164 uses no spaces, no dashes, no parenthesis, and no periods. Examples of E.164 Numbers +14155552671, +442071838750, +551155256325

E.164 phone number format is the international phone number formatting standard across the globe. The longer the password the more difficult it is to crack it as the number of permutation and combination to guess the password will be too high. Examples of E.164 Numbers +14155552671 . The North American Numbering Plan (NANP) divides the territories of its members into numbering plan areas (NPAs) which are encoded numerically with a three-digit telephone number prefix, commonly called the area code. Each telephone is assigned a seven-digit telephone number unique only within its respective numbering plan area. The telephone number consists of a three-digit central office code and a four-digit station number. The combination of an area code and the telephone number serves as a destination routing address in the public switched telephone network (PSTN). Examples of North American Numbering Plan (234) 235-5678 is a valid telephone number; with area code 234, central office prefix (exchange) 235, and line number 5678