A .MOBI extension tells your customers that your website is optimized for mobile devices.
MOBI is financially backed and sponsored by Google, Microsoft, Samsung, Visa, and several other leading technology companies.
There are no restrictions for registering .MOBI domain names
Anyone can register .MOBI domain names. However, because .MOBI is meant for mobile devices, registrants must adhere to mobile-compatibility style guidelines. This ensures that all websites that use the .MOBI extension are optimized for easy viewing on mobile devices such as cell phones and tablets.