Received a call from this number while was talking on other line.

Robo caller. No one there after answering. Said hello. No answer. After 30 sec disconnected and blocked. Research shows a lot of spam calls originating with this caller ID

No message left ... Has called several times

Called loud beep.

This number has called my cell phone numerous times in the past few weeks.  If I answer, no one ever comes on the line.  Just that loud beep that others have reported.  I'm trying to find what phone company owns the number and report it as a robo/spammer number.  I've had my current phone number for almost four years and I still get debt collector calls for the previous owner.  Really annoying.