Reverse Nameserver search tool?

[Steen]

Does anyone know if it is possible to search and see how many domain names a certain nameserver hosts? I know domaintools offers this as an a la carte option but I am wondering if there are any free or unlimited search options?

To clarify: I would like to search by nameserver, NOT IP address (which is plentiful.)

Thank you!

 

[MediaHound]

webhosting.info
Cheers

 

[Steen]

webhosting.info seems to provide the total # of domains on ns1.google.com for example but you can't even pay to purchase a list of the individual domains hosted there? At DT you can pay for the list. Anyone know other places where this is possible?