This number is a scam number...it calls to see if you have a live line and then it hangs up.  You will be immediately called back by another number that is within your same area code with a prerecorded message.  Basically this is a spam number that will waste your time and will continue to call under different numbers each day.  This same event had been going on for the last 6 months everyday.  Sometimes multiple times a day.  They tie up my business line and waste time.