Received call at 2:28 AM Central Time. When I answered the caller had hung up.

Constantly rings, calls often.  Did a reverse phone lookup and it is supposedly a 'land line', not a cell phone like others are commenting here.

Called at 5:03am CST, when I answered I heard a short beep (like searching for a fax tone) then it hung up.

Received a call at 5:50am, just hung up. Tried to call back, no response.

This number called me at almost 4am and hung up once I answered.

call 3x at 12:30 a.m.  When I answered, there was no response.

Called at 10:23 pm.  Call sounded like a cell phone but no one responded after I said hello.

Called this morning before 7am, heard background noise like a cell phone then they hung up. I called back (hiding my ID) and got voice mail.

Called at 1:55 AM and hung up, so I called back and left a message saying I don't know what company you are from and I would suggest you don't call back.

called at 3:00am and hung up

Called at 2:00am and hung up when answering

unknown caller at 1am!