Received 3 calls from this #.  First call was at 10:04 (rang about 5 times) and quit.  Next call was at 10:06.  Again it rang about 5 times and quit.  Third call was at 10:07.  After 3 rings I picked up, said "hello" and got dead air.  Don't have any idea who is doing this or what they might want.  Perhaps someone else might have more information.  Extremely annoying!  Yesterday another number 517-295-1074 did the exact same thing, but when I answered on the 4th ring of that 3rd call, after a long pause, there was a man that came on the line.  I believe that call was a Scammer.  And I believe this one probably was connected to some sort of scam as well.