At one time, there was a for-pay service that one would subscribe to. You effectively forward your number to a private 800 number that uses ANI for the true caller information, rather than easily-fakeable Caller ID. Then they run a search of the phone number, and forward the call to you with the actual, verified caller ID info... all in the blink of an eye. You can subsequently choose to answer, block, or voice-mail them based on whether you have them as contacts, or whatever.
I don't know if it's still available...
Too often, it isn't. It is having to be put-back into place after getting out of the barn.
AND .. they WILL be charging for such stuff....
Telco's had shot both their own feet off at the knees to shave costs, cut detailed billing out of the equation in favor of all-you can eat, simple flat-rate fee, and "paperless" with autopay off a debit or credit card or bank account if you please as well.
Right about the time I retired from C&W, 25 years back, "CCS-7" Common-Channel Signalling System 7th revision" had pretty much gotten full implementation, worldwide, GSM and other mobiles included, for Direct Distance Dial and International DDD traffic.
Reliable end-to-end transmittal of the originating subscriber's ID HAD BEEN carried all the way TO the last-mile Central Office, stopped no earlier, even if optioned to NOT be displayed. The police could still get it off the logs, last-mile CO. That's how we put-paid to called-in bomb-threats by lazy schoolkids and such.
And then.... "Alternative Carriers" began using call-back to shift the basis of tariffs, which buggered-up the data.
Enter, also, Voice over IP, which wasn't even a participant.
Dominant-Carrier Telcos took revenge by messing with the callback operator's clear-down handshakes, dynamically rotating IP's out from under their ISP customers, and building BETTER (and cheaper..) designed-for-the-purpose and "other-than public internet" VoIP networks THEMSELVES.
As the networks changed, reliable Caller-ID fell by the wayside. Spoofing became zero effort.
And here we are of recent years.
Phone bills are dirt cheap in money, but we pay a different price in TIME wasted. Robocall annoyances. Malware infections seeking gain off your data or money. Or to enable a foreign power or criminals for ransom to lie in wait, then cripple an entire nation's telecoms and data networks.
Or try to do. As usual, the past fifty years and counting. "Common channel" signaling was an earlier counter to an earlier vulnerability, MF and SF
INBAND "tone signalling" compromised by audio "phone phreaking", if anyone remembers the "blue box" era.
Got me one-each 16-button keypad MIL-SPEC 4-Wire E&M STE unit still up in the attic, left-over off R&D for a contract Day Job once did for some 3-letter agency called Fort Ritchie home.
Tempting to order me up a legacy copper trunk for that old sojer and let the bastids try their damndest to infect it's "operating system" - a rather nicely made device called a "hook switch", like it was a too-smart-for-its-own good iPad!
"Knock yerselves out!"
Mind.. my ruggedized but intentionally STOOPID flip-phone plays dumb really well arredy..
Malware finds it sorta like a prevert with a raging hard-on trying to rape a marble statue.
No holes with any DEPTH to 'em. Literally "dumb as a box of rocks".