Who called from 5712813876

Called at 8 o'clock in the morning on a Saturday. I thought they weren't supposed to call that early. I told him I was in Washington state and it was only 8 a.m. on the West Coast.

Called 7/11/12 at 7:35 pm CDT.  Call came from Centreville, VA.  He left a message....mostly non-intelligible but I did make out "That was a close call bro.  You're lucky, really lucky."  
???????

Robo call,  Spoofed number.  Likely a test looking for a live phone number.

caller ID Braddock Va on 11/28/12 @ 2:21 pm at same time a message on answering machine of a kids voice that says hi mom and then hangs up?

Caller said he was calling from "National Cargiving Foundation" to thank me for my previous support.  
I laughed and hung up.  
Traced call and it came from Centreville, VA