> there should be verifiable reverse lookup to a valid registered number

This has existed for a very, very long time; its just a business feature you have to pay a lot of extra money for and that is generally unavailable to consumers.

Business customers get access to DNIS and ANI.

DNIS is the number that was dialed to reach the business. It is used for call routing and marketing analytics.

ANI is the phone number from which the call was made. It’s used again for call routing and analytics, but also billing. It’s how they knew where to send the bill back in the days of 1-900 numbers. Because real money is involved, it’s a pretty good bet it’s usually tied to the real entity.

You, as a mere consumer, are left with caller id, which no business user cares about.