Received a call from this number on July 21, at 10:16 AM. This call came in on my personal emergency on-call mobile phone, used only for communication between my answering service and myself. . My number cannot be blocked for this reason. Caller ID said NOVA. I could not find any definitive information regarding who this was since many organizations use this acronym. Just the fact that it was a robocall on a mobile phone makes it suspicious, along with the purpose of the phone.