Here's something a bit different: 
#!/usr/bin/perl -l

use strict;

use Net::Netmask;
use Socket;

gethostbyaddr(inet_aton($_), AF_INET) or print
        for Net::Netmask->new("81.86.0.0/16")->enumerate();

[download]

-Matt

In reply to Re: Re: Better way to check reverse DNS entries by DrManhattan
in thread Better way to check reverse DNS entries by !unlike

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