Which domain extensions are supported? Jimdo Hilfe You have the opportunity to register your own custom domains with the paid Dolphin packages. Available domain extensions You can choose from the following domain extensions: .at .ch .com .de .es .fr .info .it .net .nl .org Related articles Guide: Transfer a domain to Dolphin How do I register a domain for my Dolphin website? How do I use my own domain with my Dolphin website? How do I forward a domain to my Dolphin website? Where can I find the Auth-Code for my domain?