Find all domains by an IP address. How?

[jdk]

DomainTools, gives you the first 2,000 domains on a given IP address. Are there any other services out there which provides more? I am trying to research a portfolio of more than 20,000 domains.

Any suggestions as to a type of service or program which can compile or display a list of the domains when searching by an IP address?

 

[Bender]

webhosting.info ?

 

[jdk]

Forgot about them, that will work. Although it is only 50 at a time. Thanks

It works but does anyone know of a more automated way instead of copying and pasting the 50 names at a time. I wouldn't mind if it was at least 250 at a time, but 50 will take forever.