Main Domain Extractor

MainDomainExtractor.txt

using System;
using System.Text.RegularExpressions;
					
public class Program
{
         public static string Extensions =".NGO|.ONG|.OOO|.XYZ|.aaa|.abb|.ac|.academy|.accountant|.ad|.adult|.ae|.aeg|.aero|.af|.afl|.africa|.ag|.agency|.ai|.aig|.airtel|.al|.alsace|.am|.amsterdam|.an|.ao|.apartments|.app|.aq|.ar|.archi|.arpa|.art|.as|.asia|.associates|.at|.au|.audio|.auto|.aw|.ax|.az|.ba|.bar|.barcelona|.bargains|.bb|.bbc|.bcn|.bd|.be|.bentley|.berlin|.best|.bf|.bg|.bh|.bi|.bible|.bike|.biz|.bj|.bl|.black|.blackfriday|.blog|.blue|.bm|.bn|.bo|.bq|.br|.brussels|.bs|.bt|.builders|.bv|.bw|.by|.bz|.bzh|.ca|.cam|.camera|.camp|.cancerresearch|.car|.cards|.cars|.cat|.cc|.cd|.center|.cf|.cg|.ch|.cheap|.christmas|.church|.ci|.ck|.cl|.click|.clothing|.cloud|.club|.cm|.cn|.co|.codes|.coffee|.college|.com|.coop|.country|.cr|.cu|.cv|.cw|.cx|.cy|.cymru|.cz|.dance|.date|.dating|.de|.desi|.design|.dev|.diet|.directory|.dj|.dk|.dm|.do|.download|.dz|.ec|.eco|.edu|.education|.ee|.eg|.eh|.email|.eng|.er|.es|.et|.eu|.eus|.events|.example|.exchange|.exposed|.faith|.farm|.fi|.fj|.fk|.flowers|.fm|.fo|.fr|.frl|.futbol|.ga|.gal|.game|.gb|.gd|.gdn|.ge|.gent|.geo|.gf|.gg|.gh|.gi|.gift|.gl|.glass|.global|.gm|.gn|.google|.gop|.gov|.gp|.gq|.gr|.green|.gs|.gt|.gu|.guitars|.guru|.gw|.gy|.help|.hiphop|.hiv|.hk|.hm|.hn|.holdings|.hosting|.house|.hr|.ht|.hu|.id|.ie|.il|.im|.in|.info|.ink|.int|.international|.invalid|.io|.iq|.ir|.irish|.is|.istanbul|.it|.je|.jm|.jo|.jobs|.jp|.juegos|.kaufen|.ke|.kg|.kh|.ki|.kid|.kids|.kim|.kiwi|.km|.kn|.kp|.kr|.krd|.kw|.ky|.kz|.la|.land|.lat|.lb|.lc|.lgbt|.li|.life|.lighting|.link|.live|.lk|.loan|.local|.localhost|.lol|.london|.love|.lr|.ls|.lt|.lu|.lv|.ly|.ma|.mail|.map|.market|.mc|.md|.me|.med|.meet|.melbourne|.menu|.mf|.mg|.mh|.miami|.mil|.mk|.ml|.mm|.mn|.mo|.mobi|.moda|.moe|.mom|.movie|.mp|.mq|.mr|.ms|.mt|.mu|.museum|.music|.mv|.mw|.mx|.my|.mz|.na|.name|.nato|.nc|.ne|.net|.new|.nf|.ng|.ni|.ninja|.nl|.no|.np|.nr|.nu|.nyc|.nz|.om|.one|.onion|.onl|.ooo|.org|.organic|.pa|.paris|.pe|.pf|.pg|.ph|.pharmacy|.photo|.photos|.pics|.pink|.pizza|.pk|.pl|.plumbing|.pm|.pn|.porn|.post|.pr|.pro|.properties|.property|.ps|.pt|.pw|.py|.qa|.quebec|.re|.realtor|.rich|.rio|.ro|.rocks|.rs|.ru|.rw|.sa|.saarland|.sale|.sb|.sc|.science|.scot|.sd|.se|.sex|.sexy|.sg|.sh|.shiksha|.shop|.si|.sic|.singles|.sj|.sk|.sl|.sm|.sn|.so|.social|.solar|.sr|.ss|.st|.stream|.su|.sucks|.sv|.swiss|.sx|.sy|.sydney|.sz|.taipei|.tattoo|.tc|.td|.tel|.test|.tf|.tg|.th|.tj|.tk|.tl|.tm|.tn|.to|.today|.tokyo|.top|.tp|.tr|.travel|.tt|.tv|.tw|.tz|.ua|.ug|.uk|.um|.uno|.us|.uy|.uz|.va|.vc|.ve|.vegas|.ventures|.vg|.vi|.video|.vlaanderen|.vn|.voting|.vu|.wales|.web|.wedding|.wf|.wien|.wiki|.win|.work|.ws|.wtf|.xxx|.xyz|.ye|.yt|.za|.zm|.zw";		
          public static string GetMainDomain(Uri input)
        {
            var ret = "";
            var sPattern = @"[A-Za-z0-9_-]*\.("+Extensions+")$";
            var r = new Regex(sPattern, RegexOptions.IgnoreCase);
            var m = r.Match(input.Host.ToString());
			  if(m.Success)ret=m.Value;
			  return ret;
            
        }
        public static void Main()
        {
            Console.WriteLine(GetMainDomain(new Uri("https://wwww.ali.tabryzy.com/conding?is=fun")));
        } 
}