traceroute.txt

rk:~ rkuhn$ tracert.pl youtube.com
traceroute: Warning: youtube.com has multiple addresses; using 173.194.113.136
traceroute to youtube.com (173.194.113.136), 64 hops max, 52 byte packets
 1  fritz.box (192.168.178.1 [PRIVATE-ADDRESS-CBLK-RFC1918-IANA-RESERVED])  0.933 ms  0.772 ms  0.707 ms
 2  213.191.89.55 (213.191.89.55 [HANSENET])  25.085 ms  25.208 ms  25.241 ms
 3  62.53.12.0 (62.53.12.0 [DE-MEDIAWAYS-970527])  25.232 ms  25.375 ms  26.425 ms
 4  ge8-0.br50.fra.de.hansenet.net (62.109.70.21 [DE-HANSENET-20010803])  25.899 ms  25.569 ms  40.448 ms
 5  de-cix10.net.google.com (80.81.192.108 [DE-CIX-FRA-IXP])  26.053 ms  25.781 ms  25.564 ms
 6  209.85.240.64 (209.85.240.64 [GOOGLE])  34.697 ms  26.763 ms
    209.85.241.110 (209.85.241.110 [GOOGLE])  26.022 ms
 7  72.14.234.235 (72.14.234.235 [GOOGLE])  26.135 ms
    72.14.234.231 (72.14.234.231 [GOOGLE])  25.715 ms
    209.85.251.248 (209.85.251.248 [GOOGLE])  26.847 ms
 8  209.85.242.187 (209.85.242.187 [GOOGLE])  44.542 ms
    209.85.240.223 (209.85.240.223 [GOOGLE])  33.857 ms
    209.85.242.187 (209.85.242.187 [GOOGLE])  33.671 ms
 9  72.14.233.166 (72.14.233.166 [GOOGLE])  33.886 ms  33.394 ms  33.396 ms
10  72.14.235.215 (72.14.235.215 [GOOGLE])  34.320 ms  34.208 ms  34.016 ms
11  ham02s11-in-f8.1e100.net (173.194.113.136 [GOOGLE])  33.960 ms  33.900 ms  33.606 ms

tracert.pl

#!/usr/bin/perl

use strict;
use warnings;

open my $proc, "traceroute $ARGV[0]|" or die "cannot start `traceroute`: $!\n";
while (<$proc>) {
  next unless my ($ip) = /\((\d+\.\d+\.\d+\.\d+)\)/;
  my $whois = `whois $ip | grep -i netname: | tail -1`;
  chomp $whois;
  $whois =~ s/^netname:\s+//i;
  s/\($ip/\($ip [$whois]/;
} continue {
  print;
}

Any use of this code occurs at your own risk! (and it has only been tested on OS X 10.9)