Registration of a firm(registrar of firms:rof)

Hello,

I have a few clients how want to know whether their Partnership has been registered with the ROF. I have all other details like name of company, name of parterns, PSR, capital etc. of those firms.

In short, how do I know if a firm is registered with the ROF or not? Is there a website for the same or will I have to go to their office for the same?