#!/usr/bin/perl -w
use strict;
use warnings;
use AnyEvent::DNS;

my ($domain);
my (@domains,@condvars);

my $resolver = AnyEvent::DNS::resolver;

while ($domain = <>;)
{
  # clean off newline
  chomp $domain;
  
  # send dns packets
  $resolver->resolve($domain,"*",my $condvar  = AnyEvent->condvar);

  # receive dns packets
  $condvar->recv;
  print "$domain\n";
}