I see this 'missed call' number at 11:57 am, 5 Nov. 2013. After reading the notes on this website I will not be calling them back. My guess is that it's a 'robo-caller' sleuthing for 'active phone numbers' to both database and sell.
Their phone carrier should charge 'robo-caller' & spamming companies like this $2.00 per call. That should put a quick end to it to thephone spamming.