I graduated High School in '88 as well. I wrote a program to do the exact same things on an Apple II+. There was a local bbs where we would share access numbers and pins. I vaguely remember a service called Metrophone? With 10 digit pins, that if you successfully retrieved one, they would work for months.
Later, I discovered your app (much more refined than what I had built) and used that.
Thank you for the walk down memory lane.
You’ve done great work! John - Cookie Monster - Sysop Sesame Street BBS - UES / C64 / 3.2 Megs Online - Rowdy American Distributors