It appears to be based on (published) phone records and on real estate ownership records.
No. Can't be. My phone is not in my name; neither is any real estate - and this has been the case for 5 years.
They must be able to compile this information from general internet traffic.......even the information that you give in order to register for your ISP. As for D.O.B., that can be obtained in a number of ways.
To me, this is very much of concern. Privacy is gone when a site like this can exist.
Char