Frequently get a hang up call from this number. Recently put our entire corporate phone system behind a firewall as we were being crippled by hackers since we have voice over internet.
I received a call from this number today. I could hear someone talking in the background and breathing but when I said "hello" twice they hung up. I reverse dialed the number and got an automated "This account is not valid" three times before being disconnected. I call SCAM or hackers or both.