Regular Expression Library

Test Your Regular Expressions

New Silverlight Tester

Singleline

Case Insensitive

Multiline

Ignore Whitespace in Expression

Explicit Capture

URL

File

Source

Regular Expression
^(?:(?:1\d{0,2}|[3-9]\d?|2(?:[0-5]{1,2}|\d)?|0)\.){3}(?:1\d{0,2}|[3-9]\d?|2(?:[0-5]{1,2}|\d)?|0)$