Weird question.

[Mark_Andrews at isc.org]

> 
> 	I have a text file with a list of 726 domains, is there a perl
> module or a program that can do a whois on all of these domains and show me
> the ones that are no longer pointing at our dns server? I'm trying to do a
> little house cleaning and doing that manual seems silly since at one point
> im sure someone more clever than me has run into this issue.
> 
> Thanks,
> -Drew
> 

	Why over load the whois servers.

	It's easy enough to compute the parent zone the ask its servers
	for the NS RRset for the child zone.  It should also be faster.
	It also works for ALL zones.

	This will supply you with a list of zones that may need further
	investigation.

	Mark
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at isc.org