You can use shorter ranges too.
"This feature allows you to enter ports in various formats including, Port Ranges (100-150), Individual Ports (80, 68, 888), or Mixed (1020-5000, 689). "
So not only can you enter port ranges, but you can enter multiple individual ports per line, to a almost unlimited degree. The limitation would be to how many devices you can port forward to, and I think that limits at 24. But if you have more then 24 devices connected to your router, you probably need more then a 60$ router. Heh.