If I don't know who it is then I'm not answering shit. I don't even bother looking up the numbers anymore because they all come from spoofed caller IDs now, and if you answer you'll get 1000 more scam calls immediately because now they know you're dumb enough to pick up
They're getting ballsy these days too. I'm required to answer the phone at work because it's a business line, but as a result we get an absolute ton of spam or empty lines. I've had them spoof the local hospital's phone number several times. I got a call from the motherfuckin' USDA the other day (allegedly), like the government agency. Empty line. Once I got a call on my cell phone from my own phone number, that was interesting.
When the scammers spoof numbers they usually just get a block of random numbers that are local to where they are calling, then they just try them one at a time. They pick numbers that look local because people are more likely to answer.
They never actually bother verifying whose number they're using though, so it frequently results in them calling from the persons own number who they are trying to scam, local businesses, and even local government numbers.
I work for the phone company and I've frequently gotten calls from people telling me someone just called them from their own number lol
There are filter apps you can put on your phone to help identify them since they're usually calling voip. I know the FCC is trying to ban spoofing and you can report spoofing on their website