I think I may have posted about this app. I have it for Android but pretty sure it exists for iOS for you holdouts.

In any case, the app database has become so thorough (crowd-source) that the calls come up as IRS Scam.
Love that.

But I'm still gonna play it safe, call them back in Russia or India or wherever, via LA, and give them all my bank acct numbers, charge cards, passwords, as well as my DL, shoe size and favorite color.
Should be in the clear after that.

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!#$@@$#!

all I need to know I learnt from Bugs Bunny on Saturday mornings.

The Howlin Souls - [goo.gl]

Extreme Call Blocker and Vblocker both for the Android also use large SPAM caller databases as well as the FCC one. Unfortunately with versions of Android past 5.x they lost their ability to block the SPAMer leaving voicemail. It's some sort of Android "feature" or "bug" involving some permission that's not longer accessible to the apps. If the iPhone SE wasn't so damn expensive I'd have gotten off the Android crap a long time ago.