no msg left. caller ID "AZ Times"

Yes, I rec'd a call from 720-450-9598 with call ID AZ Times.  Did not answer, left a 1 min no voice message on my machine.

No Caller ID, Called twice in rapid succession. No message left.

ID: AZ Times.....no message.  Number now blocked.  

Received a call from 720-450-9598 (AZ Times shown on the CID) with no message... then a few minutes later received another from 305-368-7525 (CID indicating Florida) which also left no message.  Truly believe that both must have originated from the same call center boiler room... just showing CID wise, calls from the SW and then the SE US in an attempt to get someone to bite.