#!/usr/bin/perl -wT

use CGI;
use Net::Whois::ARIN;

my $w = Net::Whois::ARIN->new(
host    => 'whois.arin.net',
port    => 43,
timeout => 30,
);

print "content-type:text/html; charset=utf-8\n\n";
my $q = new CGI;
my $ip = $q->param('ip');
if (!$ip){print "";}else{
my @records = $w->network($ip);
foreach my $net (@records)  {

# print ...;
  }
}