Does anyone know of a good way to determine which registrar a domain name was registered with. I have a client that has registered some domains, but he doesn't have a clue where they are registered.

I've tried different whois clients, but none tell me the registrar.

I am able to see the registrar with different domains, but not his. So my conclusion is that the registrar they registered with doesn't reveal that data in their whois information.

Any Ideas?

http://www.nsiregistry.com should show it ...

Thanks!!!

Like always you have the right answer :D