I too looked at my mobile tonight and tried to remember why this odd number had phoned me.
I searched this site and then I remembered
It is a genuine call back from the University of Liverpool. I registered my interest with them as regards a Masters Programme and this was their follow up call. I couldn't talk at the time and they duly sent me an email on the address that I had provided the previous day. I was asked no personal questions nor was I asked to divulge anything untoward on the phone and the caller apologised for getting the call back time wrong as it was the morning and I'd equested an afternoon call.
No scam, just following up a genuine enquiry

http://www.liv.ac.uk/study/online/

On several occassions, I received calls from this number and wondered where it could be from. The caller(s) claim they are from Liverpool University and pretend to be good advisors because of a request you made about their programmes.  I have started to smell a rat (like scams)

Hello, someone called the +22797036666 from this number on 08/18/2010; I was busy on that day so I had been able to answer; could you call be back tomorrow? thanks

yeah Tha`s correct. This number is from University of Liverpool master online programs. If you recieved that missed number in your cell phone means someone had called you.
Also, the online Consultant/ Company name is "Laureate Online Education"

Why? This number is a partner of e-learning of liverpool university. So, this is not scamer and be careful my friend.
+31 (0)20 713 0000 Admissions: admission@ohecampus.com