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
\b(1(?!27\.0\.0\.1)\d{1,2}|2[0-4][0-9]|25[0-4]|\d{1,2})\.(?:\d{1,3}\.){2}(25[0-5]|2[0-4][0-9]|1\d{2}|\d{2}|[1-9])\b