Who called from 6504603745

Caller Id = "Unavailable".  No voice message.  I called back from a different number, and 650-460-3745 appears not to be in service.

Peter: thank you for bravely calling and finding that the number was not in service.  I'll add it to my block list.

They keep calling, & keep getting blocked at my end. (Nice to know it's worthy of a continued place on my blocked callers list).

CID: UNKNOWN NUMBER  No message on answering machine = SPAM