This number called made it thru my coma fowarding which usually does not pass on calls from telemarketers, No answer just dead air.  I think they are the company behind the reverse number look up that shows up a lot in the search.  This must stop.  

just got a call from that number.  answered to see who it was.  nobody answered, just dead air.   hung up on them.

Received a call. Answered so I could interrogate them. They said nothing and then disconnected. Truthfully, they're probably calling to verify they have a valid number(s) so they sell them to more scammers.

Unknown number. Answered but only got dead air. Then was disconnected.

Didn't know the number. Didn't answer. Didn't leave a message.  May be legit.