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by sprokolopolis 1356 days ago
In my experience, it seems like most spam calls that I receive are using a spoofed number over VOIP. Reporting the number as spam, basically reports the number they are spoofing, rather than the people making the call. Is that correct? Will this new action have any effect on these spoofed VOIP calls? It seems like there is no way for people receiving these calls to report these callers without having the carriers recording the source IP addresses of these calls. I don't know all of the inner-workings of the phone network, so maybe I am making incorrect assumptions.
3 comments

Yes that is exactly what this is about. A few years ago the FCC mandated[1] that all voice providers implement a set of standards called STIR/SHAKEN that are essentially cryptographic signatures that a call originated with them and that the Caller ID information is valid. They have since been gradually increasing penalties for providers that are not in compliance with those standards. This move is the strictest yet - completely disconnecting some providers that are not in compliance. The companies in question aren't an exhaustive list of providers that still allow spoofed Caller ID, so it won't end the problem. I'm still curious as to how far they will be able to go with foreign services. At the least they should eventually be able to prevent spoofing of domestic numbers.

[1] https://www.fcc.gov/call-authentication

Thank you for the clarification. Yeah, most of the down that I get stems to originate from other countries. Hopefully they can crack down on those.
I have done CNAM lookups on the numbers and contacted the originating VOIP companies, and they just say "we won't let that number contact you again". It's infuriating. Don't let that customer contact me again, they can change their number at will. Scumbags.
Yeah there really isn't much that victims can do at this point until the carriers are held more accountable. Hopefully this will help.
Right before my spam call problem got out of hand, I called back a number and it was a backdoor to some community's 911. The 911 operator had her ass on the dashboard demanding to know how I got the number. I felt like a kid in the principal's office.