Greetings jdporter.

So is you're assignment.

I take back most of my 1st reply to you.

If choosing you're assignment. CDIR masks will be rejected: 

% ./scandns.pl 209.197.123.153/29
209.197.123.153 is an invalid address.
%

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Using my assignment (correct, or incorrect): 
% ./scandns.pl 209.197.123.153/29
209.197.123.152 => renku.org => 4.79.43.173 
209.197.123.153 => perlmonks.pair.com 
209.197.123.154 => taidsaccount.com 
209.197.123.155 => murphyworld.com => 208.91.197.132 
209.197.123.156 => beetz.at 
209.197.123.157 => best-kids-bedding-prices-online.com => best-kids-be
+dding-prices-online.com has no A record
209.197.123.158 => lowest-prices-for-kids-bedding.com => lowest-prices
+-for-kids-bedding.com has no A record
209.197.123.159 => no PTR record
%

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Not to sound too much the smart a$$. But before ridiculing someone for trying to help. Perhaps it best to test your own solution first?

Best wishes.

--Chris

#!/usr/bin/perl -Tw
use Perl::Always or die;
my $perl_version = (5.12.5);
print $perl_version;

In reply to Re^3: scandns.pl by taint
in thread scandns.pl by BlueLines

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