Perl regex extracting domain name from URL code example

#!/usr/bin/perl -wT

use strict;
use Data::Dumper;

# code from:
# (http://www.willmaster.com/blog/perl/extracting-domain-name-from-url.php)
# test links taken from the front page of news.ycombinator.com on 2Oct2013
my @urls = (
  "http://www.reuters.com/article/2013/10/02/crime-silkroad-raid-idUSL1N0HS12C20131002",
  "http://allthingsd.com/20131002/u-s-opposes-tech-companies-requests-to-disclose-surveillance/",
  "http://krebsonsecurity.com/wp-content/uploads/2013/10/UlbrichtCriminalComplaint.pdf",
  "http://customerdevlabs.com/2013/09/24/google-news-api-mturk-press/#",
  "http://www.postgresqlstudio.org/",
  "http://www.uscourts.gov/uscourts/courts/fisc/motion-declaratory-judgement-131002.pdf",
  "http://www.slate.com/blogs/future_tense/2013/10/02/silk_road_s_dread_pirate_ross_ulbricht_asked_stack_overflow_question_under.html",
  "http://www.nytimes.com/interactive/2013/10/01/dining/nacho-graphic.html/#",
  "http://blog.parse.com/2013/10/02/parse-developer-day-video-series-how-to-design-great-apis/",
  "http://www.phonearena.com/news/Nexus-5-to-be-first-smartphone-with-MEMS-camera-fastest-on-a-phone-Lytro-like-functionality_id47900",
  "http://www.airpair.com/pair-programming/our-future",
  "http://blogs.computerworlduk.com/open-enterprise/2013/10/richard-stallman-on-the-painful-birth-of-gnu/index.htm",
  "https://groups.google.com/forum/#!topic/mechanical-sympathy/1TMjVjyyMmA",
  "http://raml.org/",
  "http://gemal.dk/blog/2013/10/02/html5_flash_player_shumway_landed",
  "http://hover.ie/",
  "http://simberon.blogspot.nl/2013/01/swimming-with-fish.html",
  "http://techcrunch.com/2013/10/02/cardflight-1-6-million/",
  "http://www.phoronix.com/scan.php?page=news_item&px=MTQ3NDU",
  "http://www.forbes.com/sites/andygreenberg/2013/10/02/end-of-the-silk-road-fbi-busts-the-webs-biggest-anonymous-drug-black-market/",
  "http://www.fsf.org/blogs/community/global-celebration-for-the-gnu-systems-30th-anniversary",
  "http://google-latlong.blogspot.ch/2013/09/street-view-arrives-at-cern.html",
  "https://www.neckbeardrepublic.com/screencasts/pandas-vincent",
  "http://www.listia.com/jobs",
  "http://www.slate.com/articles/health_and_science/science/2013/09/children_s_language_development_talk_and_listen_to_them_from_birth.html",
  "http://pauv.org/paper.pdf",
  "http://www.valdyas.org/fading/index.cgi/kde/krita_10_years.html",
  "http://techcrunch.com/2013/10/02/monsanto-acquires-weather-big-data-company-climate-corporation-for-930m/",
  "http://mariocaropreso.com/post/62811446044/nonlinearities-and-success"
);

# print Dumper(@urls);

foreach (@urls) {
    my $url = $_;
    print $url . "\n";
    $url =~ s!^https?://(?:www\.)?!!i;
    $url =~ s!/.*!!;
    $url =~ s/[\?\#\:].*//;
    print $url . "\n\n";

}