If no WHOIS lookup is available for the domain, we will require written confirmation from the domain registry.
The WHOIS search facility will enable you to identify the current registrant.
Check the WHOIS registration data for the site.
If the domain isn't posted for sale, start by doing a simple WhoIs lookup to see who owns the domain today.
As a last resort, try calling or sending a regular letter to the WhoIs contact info.
Domain registrars require three sets of contact information for the WhoIs database: technical, administrative, and billing contacts.