Well, luckily, Twitter's domains & cert are added to the Chrome HSTS pins list, so Chrome should just serve a scary security error. Looks like their WHOIS data

Well, luckily, Twitter's domains & cert are added to the Chrome HSTS pins list, so Chrome should just serve a scary security error. Looks like their WHOIS data has reverted to normal. Not sure the NS records ever changed (though the contact data did).