At&t used to create new prospects for long distance by comparing both numbers in a call to its customers database. If a number was not an active customer it wa

At&t used to create new prospects for long distance by comparing both numbers in a call to its customers database. If a number was not an active customer it was put in an outbound call list to solicit long distance. The best story i remember was when the navy wanted to know why we called one of their nuclear submarines. This implied that the right 10 random digits contacted a sub.