If that IP is non-routable it means that either the entire country is on one broadcast domain or they're pulling off some relatively complicated layer 2/3 network segregation (lots of enormous lookup tables, etc). I imagine communications would be very slow all around either way.
I think that the submitter getting all "zOMG they're running the whole damn country on 10.0.0.0/8!!!!11one" is at best premature, but assuming that they were, I'm wondering why you'd believe it's organized as one flat network requiring any kind of magic to operate? There's plenty of room to subnet in that