This was actually the call-back number for a cryptic text message. Not sure whether its some ad scheme, or a wrong number. Text message was, "Zack attack! *Smile, life is pretty AWESOME* -- this is the second such text, only with a different message. I had deleted the first one, and have no record of its phone no. or specific message text. I attempted to call the number after blocking caller i.d., and the call was "answered," but no sound on the other end. I don't know if its a scam or what.