Called three times today so far, have called it back using *67 prefix get fast busy signal every time. Possibly faked number ID. Surprised no one else has reported this number. I have used my call blocker to forward this number back to itself.
Same caller tried to call four times today. Unbelievable no one else has reported this number. Callback gives fast busy signal. I have the number forwarded to an "out-of-service" number. It still rings once and shows up on VZ enhanced log.