Twice a day for last two weeks received calls from "Out of Area", ID only four digits 6699. Finally picked up and clearly a robocall because of the long pause. A human got on just as I hung up. Within one minute got a call from this unknown number from 520-468-0228. I didn't pick up but I assume it was related. The system recognizes a live recipient and then a real person tries to call back. Anyway, now blocked.