Of course the guys at Google are smart, so they encoded the
url parameter. Did they right? Not exactly. In internationalized domain names the special chars are not resolved like URL params. They have their own logic system, e.g. gábor means xn--gbor-5na for nameservers. So when you try to reach an URL like above, Firefox will notice you kindly that „Firefox can’t find the server at g%c3%a1bor.20y.hu.” And it’s got the point. It really doesn’t exist. So folks remember to use URL encoding carefully, do not encode domain names, only their GET parameters.