The Big5 non-hanzi and level 1 hanzi correspond to CNS level 1:
A140-A1F5 <-> 0101-0254
A1F6 <-> 0256
A1F7 <-> 0255
A1F8-A2AE <-> 0257-0346
A2AF-A3BF <-> 0401-0580 # digits, Latin, Greek, bopomofo
**** <- 0701-0925 # Kangxi radicals
**** <- 3401-3433 # symbols for control characters
A440-ACFD <-> 3601-5102 # start of hanzi level 1
ACFE <-> 5551
AD40-AFCF <-> 5103-5550
AFD0-BBC7 <-> 5552-7547
BBC8-BE51 <-> 7549-7959
BE52 <-> 7548
BE53-C1AA <-> 7960-8520
C1AB-C2CA <-> 8522-8722
C2CB <-> 8521
C2CC-C360 <-> 8723-8812
C361-C3B8 <-> 8814-8867
C3B9 <-> 8869
C3BA <-> 8868
C3BB-C455 <-> 8870-8965
C456 <-> 8813
C457-C67E <-> 8966-9343 # end of level 1
C6A1-C7E8 -> ****** # kana, Cyrillic (different in ETEN)
C7E9-C7FC <-> 0601-0620 # enclosed numerals (different in ETEN)
Big5 level 2 hanzi correspond to CNS level 2:
C940-C949 <-> 0101-0110 # start of level 2
C94A -> 3634 # duplicate of A461
C94B-C96B <-> 0111-0143
C96C-C9BD <-> 0145-0192
C9BE <-> 0144
C9BF-C9EC <-> 0193-0244
C9ED-CAF6 <-> 0246-0424
CAF7 <-> 0245
CAF8-D6CB <-> 0425-2378
D6CC <-> 3067
D6CD-D779 <-> 2380-2493
D77A <-> 3174
D77B-DADE <-> 2494-3066
DADF <-> 2379
DAE0-DBA6 <-> 3068-3173
DBA7-DDFB <-> 3175-3603
DDFC -> 3386 # duplicate of DCD1
DDFD-E8A2 <-> 3604-5342
E8A3-E975 <-> 5344-5501
E976-EB5A <-> 5503-5807
EB5B-EBF0 <-> 5809-5930
EBF1 <-> 5343
EBF2-ECDD <-> 5931-6073
ECDE <-> 5502
ECDF-EDA9 <-> 6074-6183
EDAA-EEEA <-> 6185-6424
EEEB <-> 6815
EEEC-F055 <-> 6425-6634
F056 <-> 6184
F057-F0CA <-> 6635-6722
F0CB <-> 5808
F0CC-F162 <-> 6723-6814
F163-F16A <-> 6816-6823
F16B <-> 7165
F16C-F267 <-> 6824-6982
F268 <-> 7320
F269-F2C2 <-> 6983-7044
F2C3-F374 <-> 7046-7164
F375-F465 <-> 7166-7319
F466-F4B4 <-> 7321-7365
F4B5 <-> 7045
F4B6-F4FC <-> 7366-7442
F4FD-F662 <-> 7444-7649
F663 <-> 7443
F664-F976 <-> 7650-8169
F977-F9C3 <-> 8171-8219
F9C4 <-> 8170
F9C5 <-> 8220
F9C6 <-> 8232
F9C7-F9D1 <-> 8221-8231
F9D2-F9D5 <-> 8233-8236
Part of Notes on CJK Character Codes and Encodings.