Regular Expressions 101

Community Patterns

IPv4 validation

3

Regular Expression
ECMAScript (JavaScript)

/
^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$
/
g

Description

validate an IP v4

Submitted by harimambura - 8 years ago