Onvoy LLC/Intelliquent is a company that keeps showing up if you search incoming spam phone call numbers on TelcoData.US . If you report callers to them, they claim it's a subcontractor and that they will notify them, but the pattern of calls continue. Each incoming number shows up only once.
So I just blocked their entire range of 972-634-####. I'll see how it goes.
I'm trying something new. iPhone now allows apps that allow you to block entire ranges of caller ID numbers, rather than just single numbers.
It's not useful for spoofed numbers, obviously -- you'd just end up blocking all your real neighbors without blocking any actual spammers.
But there are companies that sell "pink contracts" -- they knowingly sell services to spammers (i.e., SPAM is pink meat), and just pretend to enforce terms of service. Those caller ID numbers are real.
Isabella Segalovich is an absolutely epic and brilliant person and I cannot WAIT to read her book on architectural ornamentation when it comes out.