It's Two Belt.
Here are the rankings:

I don't know the lower belts:

Black Belt 1000-1999
2nd Dan 2000-2999
Up to 10th dan which is 10000-15000
Master Belt 15001-20000
Custom Belt 20001-50000
God Belt 50001-100000
Elite Belt 100001-500000
One Belt 500001-1000000
Two Belt 1000000-
After Two Belt, resets to white belt,.