.IO represents the official domain extension or the internet country code top level domain (ccTLD) of British Indian Ocean Territory. NIC.IO is the authorized body for carrying out its registry and administration. The domain is currently being treated by Google as a generic top level domain since webmasters and internet users dont consider it as a country code domain.
There is no special process needed to register a .IO domain name, no special action is needed on your end.
Entities connected with British Indian Ocean Territory