RunKit + npm: tld-extract

var tldExtract = require("tld-extract") const urls = [ 'http://www.mail.yahoo.co.in/', 'https://mail.yahoo.com/', 'https://www.abc.au.uk', 'https://github.com', 'http://github.ca', 'https://www.google.ru', 'https://google.co.uk', 'https://www.yandex.com', 'https://yandex.ru', ] const tldList = []; urls.forEach(url => tldList.push(tldExtract(url))) console.log({tldList})