Got a call from this number today - didn't answer and left no message.  Caller ID is "AZ Wireless Call" which is what my caller ID says on every cell phone call.  However, an hour or two later I got yet another call from another phone number with the same caller ID and they also left no message.  That number was 6029190179.  Perhaps this is a new tactic on the part of telemarketers.  These numbers may be spoofed.