Is this based on the caller ID number that comes with the call? Caller ID can be forged. Or is Apple sending some other out-of-band info, or delivering the call via internet (using up your carrier's allocation to your account)? First, we need a law (not just an FCC regulation) that requires carriers to verify that caller ID coming in from every customer is a number that would be routed out that trunk (e.g one of their numbers), and let that operate a while (a year or two) so we have correct caller ID (with severe penalties for carriers that fail) for a while.