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Re: Re: Better way to check reverse DNS entries

by Improv (Pilgrim)
on Apr 22, 2003 at 13:06 UTC ( [id://252259]=note: print w/replies, xml ) Need Help??


in reply to Re: Better way to check reverse DNS entries
in thread Better way to check reverse DNS entries

foreach $c (0..255)
  {
  foreach $d (0..255)
    {
    print "81.86.$c.$d" unless $res->query("81.86.$c.$d", "PTR");
    }
  }

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