Re:Look Up Unknown Phone Numbers Using Facebook Reset Password
by kristopolous on Monday January 04, 2021 @02:32AM
(#25628629)
Of course. It was called the greypages.
https://en.wikipedia.org/wiki/Reverse_telephone_directory
In old movies you sometimes see people ask the operator to do a reverse search as well so I assume it wasn't a big deal.
Or did I have to go through the whole book to find a match?