cpa question

Does anybody know how this works, ok for example there is a cpa campaign that ask for one page, name , address, phone , email. Now do the companies match up the IP geographically with the address and phone number? also are the phone numbers checked for authenticity ? does anybody have any insight to this?

thanks in advance

Nothing is usually checked beyond matching city/state to zip code and making sure the phone number is in a valid format. (i.e. not 555-555-5555)

In general, the more complicated the information you have to fill out, the more thoroughly it will be checked.