I'm always paranoid that I'm going to miss a call from one of the million numbers that come from my kiddo's school.

That and our doctors' offices are starting to call from random numbers. Sigh

Buy a Twilio number that forwards to your real number. Then whoever has that number can call it, and it will ring you from the known Twilio number. Add to address book and voila!

Do spammers not call Twilio numbers?

I assume the spammers buy "known active real person phone numbers" from somewhere (probably the awful carriers themselves), so it might be less likely for them to find a new Twilio number. But as soon as you give the phone number to some company that sells (or accidentally leaks) their customer data, that number will be burned too.

I don't know about calls, but I definitely get spam SMSes on my persistent Twilio SMS numbers.

This is a simple and neat idea. I'll try it on the weekend.

My carrier has an option that forces unknown callers to enter a 2 digit number to proceed with call. I add known contacts to my list online and they don't get the prompt. Works well, however I now get a lot of spam texts which it doesn't work for.

It's strange they don't have some API that would let Lyft or Doordash or whoever provide caller ID for this use case.