Anyone who runs a website on the Internet first needs one thing: a unique web address. Because only with this unambiguous assignment can web pages be found online. And in the virtual world, too, there is something like registration offices where online residents are registered along with their website addresses, so-called registries. They register Internet addresses with country endings such as address.de or special addresses such as address.fun. “Sometimes these belong to government agencies, sometimes they are also privately owned,” says Alexander Siffrin.