https://en.m.wikipedia.org/wiki/Telephone_directory https://en.m.wikipedia.org/wiki/Telephone_directory Or White Pages, the non-commercial version. https://en

https://en.m.wikipedia.org/wiki/Telephone_directory https://en.m.wikipedia.org/wiki/Telephone_directory Or White Pages, the non-commercial version. https://en.m.wikipedia.org/wiki/Telephone_directory https://en.m.wikipedia.org/wiki/Telephone_directory Who lives where, and their telephone number has always been public record. It only started to become a real problem once people started automating telephone spam. Once again, an example of how Sales/Marketing/Advertising ruins every attempt at implementing a well formed public network.