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Regular Expression Details

Title Test Find Clean Domain Name
Expression
^http\://www.[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}/$
Description
This regex only matches clean domain names. No path after. Ends in a forward slash. Starts with http://www. It is pretty slack on the TLD requiring a 2 or 3 letter ending. This part could be tightened up if you wanted to be restrict it to specific TLDs.
Matches
http://www.somedomain.co.uk/ | http://www.somedomain.com/ | http://www.dodgydomain.com.com/
Non-Matches
http://www.somedomain.co.uk/withpath.aspx | http://somedomainwithoutwww.co.uk | http://www.com/ | www.noprotocolprefix.com/ | https://www.secureprotocolprefix.com/ | http://www.notrailingslash.co.uk | HTTP://WWW.beginswithcaps.com/
Author Rating: The rating for this expression. Matthew Harris
Source
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