Who called from 8609474363

Was going through my caller ID log today and found 4 calls from this number in the past month. (2/15, 2/16, 2/22 & 2/25) Never a message left.

Called at 7:33pm.  Let answering machine pick up call, no message left.

I received a call at 8:41, but didn't answer. The caller did not leave a message. I am on the do not call list, so there must be a way to report them to the authorities!!