A.202.31.0.0/21 B.202.31.16.0/20 C.202.31.8.0/22 D.202.31.20.0/22
A.192.15.2.64/26 B.192.15.2.128/26 C.192.15.2.96/26 D.192.15.2.192/26
A、FC B、LC C、SC D、ST