Magento: Validation of new gTLDs

At this moment it is not possible to validate the new global domain names (gTLDs) in Magento. Neither it is possible to use the new domain names in frontend nor in backend. Magento uses the Zend validation classes which are outdated. You can patch the lib/Zend/Validate/Hostname.php class with the official ICANN list.

    protected $_validTlds = array(
'abogado','ac','academy','accountants','active','actor','ad','ae','aero','af','ag','agency',
'ai','airforce','al','allfinanz','alsace','am','an','ao','aq','ar','archi','army','arpa','as',
'asia','associates','at','attorney','au','auction','audio','autos','aw','ax','axa','az','ba',
'band','bar','bargains','bayern','bb','bd','be','beer','berlin','best','bf','bg','bh',
'bi','bid','bike','bio','biz','bj','black','blackfriday','blue','bm','bmw','bn',
'bnpparibas','bo','boo','boutique','br','brussels','bs','bt','budapest','build',
'builders','business','buzz','bv','bw','by','bz','bzh','ca','cab','cal','camera',
'camp','cancerresearch','capetown','capital','caravan','cards','care','career',
'careers','casa','cash','cat','catering','cc','cd','center','ceo','cern','cf',
'cg','ch','channel','cheap','christmas','chrome','church','ci','citic','city',
'ck','cl','claims','cleaning','click','clinic','clothing','club','cm','cn',
'co','codes','coffee','college','cologne','com','community','company','computer',
'condos','construction','consulting','contractors','cooking','cool','coop','country',
'cr','credit','creditcard','crs','cruises','cu','cuisinella','cv','cw','cx','cy',
'cymru','cz','dad','dance','dating','day','de','deals','degree','democrat','dental',
'dentist','desi','diamonds','diet','digital','direct','directory','discount','dj',
'dk','dm','dnp','do','domains','durban','dvag','dz','eat','ec','edu','education',
'ee','eg','email','engineer','engineering','enterprises','equipment','er','es',
'esq','estate','et','eu','eus','events','exchange','expert','exposed','fail','farm',
'feedback','fi','finance','financial','fish','fishing','fitness','fj','fk','flights',
'florist','flsmidth','fly','fm','fo','foo','forsale','foundation','fr','frl','frogans',
'fund','furniture','futbol','ga','gal','gallery','gb','gbiz','gd','ge','gent','gf','gg',
'gh','gi','gift','gifts','gives','gl','glass','gle','global','globo','gm','gmail','gmo',
'gmx','gn','google','gop','gov','gp','gq','gr','graphics','gratis','green','gripe',
'gs','gt','gu','guide','guitars','guru','gw','gy','hamburg','haus','healthcare',
'help','here','hiphop','hiv','hk','hm','hn','holdings','holiday','homes','horse',
'host','hosting','house','how','hr','ht','hu','ibm','id','ie','il','im','immo',
'immobilien','in','industries','info','ing','ink','institute','insure','int',
'international','investments','io','iq','ir','is','it','je','jetzt','jm','jo',
'jobs','joburg','jp','juegos','kaufen','ke','kg','kh','ki','kim','kitchen','kiwi',
'km','kn','koeln','kp','kr','krd','kred','kw','ky','kz','la','lacaixa','land',
'lawyer','lb','lc','lease','lgbt','li','life','lighting','limited','limo','link',
'lk','loans','london','lotto','lr','ls','lt','ltda','lu','luxe','luxury','lv','ly',
'ma','maison','management','mango','market','marketing','mc','md','me','media','meet',
'melbourne','meme','menu','mg','mh','miami','mil','mini','mk','ml','mm','mn','mo',
'mobi','moda','moe','monash','mortgage','moscow','motorcycles','mov','mp','mq','mr',
'ms','mt','mu','museum','mv','mw','mx','my','mz','na','nagoya','name','navy','nc','ne',
'net','network','neustar','new','nexus','nf','ng','ngo','nhk','ni','ninja','nl','no',
'np','nr','nra','nrw','nu','nyc','nz','okinawa','om','ong','onl','ooo','org','organic',
'otsuka','ovh','pa','paris','partners','parts','pe','pf','pg','ph','pharmacy','photo',
'photography','photos','physio','pics','pictures','pink','pizza','pk','pl','place',
'plumbing','pm','pn','pohl','poker','post','pr','praxi','press','pro','prod','productions',
'prof','properties','property','ps','pt','pub','pw','py','qa','qpon','quebec','re',
'realtor','recipes','red','rehab','reise','reisen','ren','rentals','repair','report',
'republican','rest','restaurant','reviews','rich','rio','rip','ro','rocks','rodeo','rs',
'rsvp','ru','ruhr','rw','ryukyu','sa','saarland','sarl','sb','sc','sca','scb','schmidt',
'schule','scot','sd','se','services','sexy','sg','sh','shiksha','shoes','si','singles',
'sj','sk','sl','sm','sn','so','social','software','sohu','solar','solutions','soy','space',
'spiegel','sr','st','su','supplies','supply','support','surf','surgery','suzuki','sv',
'sx','sy','systems','sz','tatar','tattoo','tax','tc','td','technology','tel','tf','tg',
'th','tienda','tips','tirol','tj','tk','tl','tm','tn','to','today','tokyo','tools','top',
'town','toys','tp','tr','trade','training','travel','tt','tui','tv','tw','tz','ua','ug',
'uk','university','uno','uol','us','uy','uz','va','vacations','vc','ve','vegas','ventures',
'versicherung','vet','vg','vi','viajes','villas','vision','vlaanderen','vn','vodka','vote',
'voting','voto','voyage','vu','wales','wang','watch','webcam','website','wed','wedding',
'wf','whoswho','wien','wiki','williamhill','wme','work','works','world','ws','wtc','wtf',
'xn--1qqw23a','xn--3bst00m','xn--3ds443g','xn--3e0b707e','xn--45brj9c','xn--4gbrim',
'xn--55qw42g','xn--55qx5d','xn--6frz82g','xn--6qq986b3xl','xn--80adxhks','xn--80ao21a',
'xn--80asehdb','xn--80aswg','xn--90a3ac','xn--c1avg','xn--cg4bki','xn--clchc0ea0b2g2a9gcd',
'xn--czr694b','xn--czru2d','xn--d1acj3b','xn--fiq228c5hs','xn--fiq64b','xn--fiqs8s','xn--fiqz9s',
'xn--fpcrj9c3d','xn--fzc2c9e2c','xn--gecrj9c','xn--h2brj9c','xn--i1b6b1a6a2e','xn--io0a7i',
'xn--j1amh','xn--j6w193g','xn--kprw13d','xn--kpry57d','xn--kput3i','xn--l1acc','xn--lgbbat1ad8j',
'xn--mgb9awbf','xn--mgba3a4f16a','xn--mgbaam7a8h','xn--mgbab2bd','xn--mgbayh7gpa',
'xn--mgbbh1a71e','xn--mgbc0a9azcg','xn--mgberp4a5d4ar','xn--mgbx4cd0ab','xn--ngbc5azd',
'xn--nqv7f','xn--nqv7fs00ema','xn--o3cw4h','xn--ogbpf8fl','xn--p1acf','xn--p1ai',
'xn--pgbs0dh','xn--q9jyb4c','xn--rhqv96g','xn--s9brj9c','xn--ses554g','xn--unup4y',
'xn--vermgensberater-ctb','xn--vermgensberatung-pwb','xn--vhquv','xn--wgbh1c','xn--wgbl6a',
'xn--xhq521b','xn--xkc2al3hye2a','xn--xkc2dl3a5ee0h','xn--yfro4i67o','xn--ygbi2ammx',
'xn--zfr164b','xxx','xyz','yachts','yandex','ye','yoga','yokohama','youtube','yt',
'za','zip','zm','zone','zw'
    );