[Warning those are spam links]<p>I've been receiving spam urls for a while but this one grabbed my attention:<p>> непереводимая.рф<p>When I access it, it redirects to xn--80adgcaax6acohn6r.xn--p1ai<p>is xn--p1ai a valid TLD?<p>How come the browser accepts it as a url in the first place?