Someone has set up an online petition for the FCC to require all local phone providers to install tech to prevent mass robocalling (https://www.change.org/p/let-s-stop-the-robocall-insanity?recruiter=848750499&utm_source=share_petition&utm_medium=copylink&utm_campaign=psf_combo_share_message.nafta_milestone_share_ask_victory.control&utm_term=293497). (That link goes to Change.org, which I'm not usually a big fan of.)
There's already a do-not-call registry hotline, which I use on all our personal and company phones once a month (...if I remember), but this concept is a little more particular: since foreign robocallers tend to robo-spam their calls all at once, often using spoofing to show local area and even service codes to trick people into answering the call, the technology would trigger a block at the local phone exchanges if they receive a suspiciously large overseas influx, especially with routing codes to make the calls look like they are coming from local areas.
Since people have a tendency to manually block these apparently 'local' calls once learning it's only "Rachel from card services" or whatever, it would also head off a potential coming problem of new legitimate numbers starting off blocked by people who would really want to talk to their mother or friend or whoever got the new number.
I'm for ANYTHING including pre-emptive nukes to stop those damned phone calls that always seem to know when it's nap time or the Viagra is about to kick-in. :knuppel2: