I'm actually not 100% sure what my issue is. Carp::Always gives me this trace:

Undefined subroutine &Net::Whois::ARIN::Network::OrgName called at /ho
+me/me
/perl5/perlbrew/perls/perl-5.16.2/lib/site_perl/5.16.2/Net/Whois/ARIN/
+Network.pm
 line 176.
        Net::Whois::ARIN::Network::AUTOLOAD('Net::Whois::ARIN::Network
+=HASH(0x7f
fe67857180)') called at lib/ProbeS/Misc.pm line 50
        ProbeS::Misc::rev_ip(96.255.24.1) called at lib/ProbeS/NetHist
+.pm 
line 83
        ProbeS::NetHist::nethist('HASH(0x7ffe5bfd9fa8)', 'HASH(0x7ffe6
+41f4e78
)', 0) called at /home/me/perl5/perlbrew/perls/perl-5.16.2/lib/site_pe
+rl/5.
16.2/Net/Whois/ARIN/Network.pm line 176.
        Net::Whois::ARIN::Network::AUTOLOAD('Net::Whois::ARIN::Network
+=HASH(0x7f
fe67857180)') called at lib/ProbeS/Misc.pm line 50
        ProbeS::Misc::rev_ip(96.255.24.1) called at lib/ProbeS/NetHist
+.pm 
line 83
        ProbeS::NetHist::nethist('HASH(0x7ffe5bfd9fa8)', 'HASH(0x7ffe6
+41f4e78
)', 0) called at ./probes line 285
[download]

My test (that works) is as follows:

#!/usr/bin/env perl

use strict;
use warnings;

BEGIN
{
  push @INC, './lib';
}

use T;

foreach my $i (qw/8.8.8.8 4.2.2.2 4.2.2.1 8.8.4.4/)
{
  print rev_ip($i) . "\n";
}
[download]

and T.pm:

package T;

BEGIN
{
  require Exporter;

  our $VERSION = 1.1;

  our @ISA = 'Exporter';
  our @EXPORT = qw(rev_ip);
}

use strict;
use warnings;

use Data::Dumper;
use Net::DNS::Resolver;
use Net::Whois::ARIN;

my $dns = Net::DNS::Resolver->new;
my $w = Net::Whois::ARIN->new; 

sub rev_ip
{
  my ($ip) = @_;
  my $org = '';
  my $rev = '';

  $org = join ", ", map { $_->OrgName } $w->network($ip);

  my $packet = $dns->search($ip);
  $rev = join ', ', map { $_->rdatastr } grep { $_->type eq 'PTR' } $p
+acket->answer if $packet;

  return "[$ip] [$org] [$rev]";
}
[download]

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