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Regular Expression Details

Title Test Find FQDN for DNS configuration tool
Expression
^(?=^.{1,254}$)(^(?:(?!\.|-)([a-z0-9\-\*]{1,63}|([a-z0-9\-]{1,62}[a-z0-9]))\.)+(?:[a-z]{2,})$)$
Description
This regex matches FQDNs plus domains starting with an or containing asterisk. This is usefull for DNS configuration tools where you might have domains like *.domain.de or 12.152.80.in-addr.arpa.
Matches
12.152.80.in-addr.arpa | *.domain.de | test.de
Non-Matches
test | test. | -.de
Author Rating: Not yet rated. Andreas Burger
Source
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