The camera is Nikon D800, it does go to 6400, so one stop more sensitivity. However, it can go two stops beyond that again for extreme situations.
I did actually use it for similar shot at 6400, for it was over exposed for the 'look' I wanted. That's always a problem with night exposures, it can look like daylight !
Even on the shot I used I was overriding auto and under exposing by one stop to get it nearer to what I could see.