This was a fascinating read. I remember going down this rabbit hole back in the days of SIM-unlocking cell phones. GSM has a lot of "secret" numbers; HowardForu

This was a fascinating read. I remember going down this rabbit hole back in the days of SIM-unlocking cell phones. GSM has a lot of "secret" numbers; HowardForums (HoFo) had a list of them back in the day. Their "secret government phone numbers" post was even more interesting!