Got this call again early this morning. They hung up again before the answering machine can pick up. Caller ID says FAV. I never answer if I don't recognize the number. I thought I had blocked this number last summer. Oh well, have to do it again.
Fake charity, gives name as "Foundation for American Veterans." This is a sophisticated kind of robo-call that pretends to be a real person, and can adapt the recording playback according to what the call recipient says, within a narrow range of responses. If you get this call, try answering in a manner that a human being would understand, but a simple robot cannot, and you'll see what I mean. Example: http://doorbell.net/junk/104310fav.mp3 .
Also uses 262 200-0379 and other numbers. They are looking for low-hanging fruit, so won't leave a message if it thinks it got voicemail, but calls back repeatedly, and ignores the DNC list.