range increments for rays & ranged touch attacks?

[Caliban]

Ranged spells do not have a "range increment", and thus do not get attack penalties at any range. If the target is far enough away, the DM is perfectly within their rights to grant them concealment, and thus you would get a % chance of missing. (If the case of the 9600 feet, if you can't see them, they have total concealment, and you would have a 50% chance of missing, assuming that you targeted the right area. Try casting true strike.)