Though we only have information about the last MH370 ping at 0:11 UTC, a massive search operation in the middle of a remote ocean would only be carried out if the (unknown) hourly pings made that area feasible.
As the flight originated near the equator, a mirror track to the north would also correlate with the returns, then leading to a last ping area in northern China close to the Gobi desert. Bearings more to the west, however, would appear less likely, given ping data is coherent.