What happens once these residential IPs end up on CSAM or terrorism or IP infringement lists? I ran a proxy in ~1996 so students could MUD from restricted uni

What happens once these residential IPs end up on CSAM or terrorism or IP infringement lists? I ran a proxy in ~1996 so students could MUD from restricted uni shells, but one weekend I went to visit my parents and there was a knock on the door and a smartly dressed man interrogated me about a plot to assassinate Clinton. (he was Special Branch sent on behalf of the Secret Service and FBI)