You can reach it by typing "ap.xozzox.de" into the address field of your browser
An ambigram is a text (generally: any sequence of letters and numbers) which can be read from a different perspective, yielding either the same or a different word as when reading normally. "Different perspective" here means e.g. reading it upside down, reflected in a miror, exchanging the roles of background and foreground, etc.
"Classical" ambigrams are rotational ambigrams which can be read upside down. They thus have a two-fold rotational symmetry around the center of the character string.
ap.xozzox.de is a rotational ambigram. A page with the same domain, expanded to a fully qualified ambigram URL, is: