http://www.perlmonks.org?node_id=872133


in reply to New to Perl

I have used cpan://NetAddr::IP for this purpose before. See the method 
  ->hostenumref()

    Faster version of ->hostenum(), returning a reference to a list.

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     Syntactic sugar causes cancer of the semicolon.        --Alan Perlis

In Section Seekers of Perl Wisdom