Any tools to find a registrants' other domains?

[A1domains.biz]

Hi guys, wondering if there is a search tool or website out there that would allow finding all domains registered under a registrant or email address?

 

[mole]

Just curious, but why would you want to do that? Neulevel offers an excellent paid search facility for .biz names. But that's the only registry I know that offers this kind of sophistication.

 

[DomainPairs]

Seeing as I often put the domain name in as the registrant to simplify sales, and I use about 6 other names when I don't do this, I'm not sure it gets you anywhere.

I also supply an email address for clients so that they can avoid spam, so that won't help either.

 

[A1domains.biz]

This question was asked by one of my clients and thought this would be a good place to find out for him.
I agree with you guys, the end result would not be accurate. I also often register with a different registrant profile and different email address.