How can I test if/how STIR/SHAKEN is working on my incoming calls? Both for detecting spoofed caller ID AND [bad sources]

Question

How can I test if/how STIR/SHAKEN is working on my incoming calls? Both for detecting spoofed caller ID AND calls from disreputable (NON-'A' attestation) service providers/carriers/sources.

I'm looking for something vaguely like https://www.internetbadguys.com/ , https://dnsleak.com , OpenDNS/Cisco Umbrella list ... 1-800-MY-ANI-IS (which, sadly, no longer works and is now a sleazy marketer), ...

I'm getting a ton of harassing, spoofed phone calls, and the bulk of them appear to be criminal enterprises discussed in this FCC filing. My phone #s are all already on do not call lists, such as https://www.donotcall.gov/. I'm already using a HiYa-based anti spam call app.

Relevant/research so far:

• On SE: Why can't spoofed caller ID's be identified?

• https://www.home.neustar/blog/att-and-neustar-execs-share-thoughts-on-stir-shaken-success. Excerpts :

• I know https://consumercomplaints.fcc.gov is there

• https://www.nolo.com/legal-encyclopedia/the-tcpa-protection-against-robo-calls-prerecorded-calls.html is good.

• TCPA small claims suits are effective; may be time for another one:

• Screwing telemarketers for fun and profit (MIT.edu)

"Overseeing STIR/SHAKEN implementation is the Secure Telephone Identity Governance Authority (STI-GA), a governing body comprising service providers representing every segment of the industry, as well as an administrator, and a technical committee. This board sets up the Policy Administrators (PAs) that authorize service providers' ability to get a token and approve certificates to make sure calls can be authenticated and exchanged with other carriers.

To date, fifty-five service providers have registered with the STI-PA to be able to sign their calls with STIR/SHAKEN authentication.

Approximately 15 [major] carriers publicly announced they’re deploying STIR/SHAKEN in parts of their network [=] 70% of all active phone numbers in the U.S.

Neustar [provides] the ATIS Robocalling Testbed.

ATIS serves as the industry interoperability test facility to validate the effectiveness of caller authentication standards developed by the Internet Engineering Task Force (IETF) and ATIS.

...

“STIR/SHAKEN will only confirm that a call is not spoofed,” said Linda

(I think this is false/misleading.)

Specifically, the working group recommended monitoring subscriber traffic patterns to identify behaviors consistent with illegal robocalling and take action when illegal robocalling campaigns are identified.

[E]nterprises can let < sic > consumers which calls to trust

provid[e] more context and identif[y] details on legitimate phone calls, along with a check mark that shows the call has been authenticated

I feel I'm getting far MORE spoofed and spam phone calls since STIR/SHAKEN has gone into effect. This year, the number of spam SMS has gone from none for months to multiple per week.

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