josefß aka

If you accessed this web page using the URL http://josefß your client supports IDNA2008. An IDNA2003 client would convert the name into instead, which is currently unresolvable.

This site is also available over https using a certificate signed by Let's Encrypt, so they appear to support IDNA2008 as well.

See räksmörgå and libidn for more information about IDNA2003 and IDNA2008.

Simon Josefsson <simon@josefß>
Simon Josefsson <>