.ky is the Internet country code top-level domain for the Cayman Islands. The code was chosen as other possible options had already been allocated. Registration was limited to residents and registered companies in the Cayman Islands with a local... Wikipedia
Actual use: Gets some use in Cayman Islands
Intended use: Entities connected with the Cayman Islands
Registration restrictions: None after 2015, anyone can register a domain
Registry: Uniregistry