- Restricted Domain List: The Restricted Domain List generally consists of names stipulated by the Colombian Government as restricted and not available for registration.
- Reserved Domain List: The Reserved Domain List generally consists of names reserved by the .CO Registry for promotional and/or other strategic purposes, and/or for its or its affiliates’ internal use.
- Super Premium Domain List: The Super Premium Domain List generally consists of names reserved by the .CO Registry for future sale via public or private auction and/or negotiated transactions, including single and double character names, keywords and generic terms.
The .CO registry has not published a publicly available list of all the Premium and Reserved domain names. The Restricted Domain List is accessible here (PDF).
To check the availability of a particular desired .CO domain name, please go to go.co/register. If the domain is part of the Super Premium Names list, it will be noted there; just fill out the form on the page to inquire about the name.