I've taken a cursory glance at phone phreaking, and I am having a hard time finding things that apply to today's US phone system. Are all the phone phreaking boxes obsolete? Every time I see anything on 2600 tone, it's followed by: "but the phone companies have updated their system to counter this..."

The same results come up after most of the phone phreaking boxes I've seen. While I haven't taken an in depth look at the subject, I'm wondering if it's all just history or something I can test today?

Even on phreaking sites, I mainly just see crude prank calls placed at random in motels and the like. Seemingly tasteless unless there's something to learn in my opinion. Any advice is appreciated! I'll continue my long reads in the meantime, searching for something to put into practice...