For the mobile user experience, there are mandatory restrictions for your .mobi website. The dotMobi "Switch On! Guides"
are available from
dotMobi to help you make your .mobi website accessible. You can also test your .mobi website with their emulator by typing in your domain name in the following text field...
.mobi domain names can contain A-Z, and 0-9. You can also use hyphens (-), but you cannot begin or end your domain name with a hyphen.
The minimum length is 3 characters, and the maximum length is 63 characters (excluding "http://www" and ".mobi").