I learned a similar lesson about the difference between LATAs and area codes around the time AOL went to unlimited. All of the Toledo numbers were constantly b

I learned a similar lesson about the difference between LATAs and area codes around the time AOL went to unlimited. All of the Toledo numbers were constantly busy, so I tried other "local" numbers and ended up discovering that the Findlay number would usually answer. I set that as the default and thought nothing more of it, while all of us used it for hours a day. The phone bill that arrived at the end of the month was quite large.