Where to find registration information of a US company

I need to find more information about a company but having nothing but its name (not even the exact name, only the main word). I don't know the state it is registered with either.
Is there any national database that can be searched?
(Google is of no help this time)

 

go to who is.

you type who is. some domain are deregister so may not have information.

 

I don't have their domain. I only have the name of the company

 

You can try "Better Business Bureau". If they are established they may be listed there, any respectable company would be listed. Also if it's a Corporation they must be registerred with the Secretary of State, however if you don't know the state this may be time consuming.