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

Please support RegExLib Sponsors

Sponsors

Regular Expression Details

Title Test Find Pattern Title
Expression
(?=^.{1,254}$)(^(?:[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9]\.?)+(?:[a-zA-Z]{2,})$)
Description
Based on Remi Sabourin pattern. Adds total length validation. Like Remi's this allows a part to be all numbers. To prevent all numbers just add (?!\d+\.) between (^(?: and ([a-z-A-Z0-9]
Matches
host.domain-name.com | 33.domain.com | 3-3.domain.com
Non-Matches
_host.domain.com | [host].domain.com | host.domain.33
Author Rating: Not yet rated. Scott Mulcahy
Source
Your Rating
Bad Good

Enter New Comment

Title

Name

Comment

Spammers suck - we apologize. Please enter the text shown below to enable your comment (not case sensitive - try as many times as you need to if the first ones are too hard):

Existing User Comments

Copyright © 2001-2024, RegexAdvice.com | ASP.NET Tutorials