This might have been a wrong number, but I'm reporting it, nonetheless.  It was made near where I live, but no message was left.  I got the call on 5/12/14 at 3:05, with a CID of "Out of Area".  They have not called since, as of 5/19/14.  However, in the same timeframe, I received two calls, from this number, which is in the same area:  301-473-1995.  Curious!