Manta displays very outdated and incorrect information about most companies it lists. A small horse boarding company that my wife and I used to have is still listed on Manta with our personal home phone number (this was never correct) even though it was closed over 3 years ago. Because Manta does very little to keep their listings current and pulls information from faulty sources to begin with, we have been continually harrassed by inquiries and solicitation phone calls to our personal phone number (which is on the no-call list by the way). I believe that Manta is associated with one of the large, well-known information list companies. I'd be very skeptical that their list data is much good for anything.