I got a strange voicemail from this number yesterday, it sounded like part of an automated message that got cut off. When I tried to call the number back to see who it was, all I get is 'Call Failed'. My guess is this number belongs to one of those survey companies, so it only allows for outgoing calls (not incoming).

Always a good idea to check unknown numbers first. Foreign & domestic criminals spoof (fake) their caller ID & call you. If you do not know anyone in that City/State do not take, or return the call.