We got a voicemail from this number (no missed call though) and it sounded like a butt-dial during a political conversation that repeatedly said things like "Obama" "Kenyan" "Chicago" and phrases like "moderate democrats" and "democrats voted for Reagan." Super weird, but then finding this page mentioning the notorious 'Americans for Prosperity' explained it all. I tweeted a link to the Soundcloud recording of the voicemail.