I know it's look a bit paranoid but: I'm affraid to be robbed from my premium domain name discovery on the whois research. Is there one non-affiliated to a registering domain compagny?
what exactly you want ? if you need to hide our personal details you can use private whois protection in your domain registrar
Just use the command-line whois client, it queries the registries directly. It's also a million times faster than puttering around on a web site.