RegExLib.com - The first Regular Expression Library on the Web!

Please support RegExLib Sponsors

Subscribe

Recent Expressions

Site Links

Community

Top Contributors

Advertise with us

Sponsors

Test Your Regular Expressions

Select Regex Engine

New Silverlight Tester

Current Options

Singleline

Case Insensitive

Multiline

Ignore Whitespace in Expression

Explicit Capture

Regex Input

External Data Source

URL

File

Source

Regular Expression
[A-Za-z](\.[A-Za-z0-9]|\-[A-Za-z0-9]|_[A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9])(\.[A-Za-z0-9]|\-[A-Za-z0-9]|_[A-Za-z0-9]|[A-Za-z0-9])*

Results

Copyright © 2001-2025, RegexAdvice.com | ASP.NET Tutorials