Question regarding Android and call blocking.

For years I've used so-called whitelist call blocking. All calls are blocked except a list of about 20 numbers that will ring through.

There's an organization that has a bunch of different numbers, and the list of numbers sometimes changes, but the caller ID string for all of them is the same: Mountain State such-and such. Is there a way I can unblock the caller ID string so that all the numbers with that ID can ring through?

Seems this feature must exist. It's probably right under my nose and can't see it.