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$ host www.perlmonks.org
www.perlmonks.org is an alias for perlmonks.org.
perlmonks.org has address 209.197.123.153
perlmonks.org has address 66.39.54.27

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    my $ip = `host $host`;
    $ip =~ s/.*?(\d+\.\d+\.\d+\.\d+).*/$1/s;