It looks like a spoofed caller ID, where someone is faking the number when they call, but the actual number isn't used by anyone.
Answered got an odd double beep then call disconnected
I got a call from this number but was unable to answer it. When I called back, I got an automated voice mail saying the number was not in service and was being used by an international telecom outside of my provider's control (??). I've never gotten a message like this before.