(I took this information from the wiki.)
Cultivation levels are divided into:
Rank 1 - 99 Mortal (3rd Dimension)
Rank 1 - 10 - Spirit Scholar(0 Spirit Rings)
Rank 11 - 20 - Spirit Master (1 Spirit Ring)
Rank 21 - 30 - Spirit Grand Master (2 Spirit Rings)
Rank 31 - 40 - Spirit Elder (3 Spirit Rings)
Rank 41 - 50 - Spirit Ancestor(4 Spirit rings)
Rank 51 - 60 - Spirit King (5 Spirit Rings)
Rank 61 - 70 - Spirit Emperor (6 Spirit Rings)
Rank 71 - 80 - Spirit Saint (7 Spirit Rings)
Rank 81 - 90 - Douluo Spirit (8 Spirit Rings)
Rank 91 - 99 - Titled Douluo (9 Spirit Rings)
Rank 91 - 94 - Average Titled Douluo
Rank 95 - 98 - Super Douluo
Rank 99 - Douluo Limit
Rank - 100 - 149 (4th Dimension)
Rank - 100 - God Officer (1 Divine Ring)
Rank - 100 - 109 - 3rd Class God (3 Divine Rings)
Rank - 110 - 119 - 2nd Class God (5 Divine Rings)
Rank - 120 - 129 - 1st Class God (7 Divine Rings)
Rank - 130 - 139 - Half-God King (8 Divine Rings)
Rank - 140 - 149 - Quasi-God King (8 Divine Rings)
Rank - 150 - ??? - God King (9 Divine Rings) (5th Dimension)