inetnum:            172.20.231.16 - 172.20.231.31
netname:            CK-ipv4-NET
descr:              CK ipv4 range
country:            HK
admin-c:            CK-DN42
tech-c:             CK-DN42
mnt-by:             CK-MNT
status:             ASSIGNED
cidr:               172.20.231.16/28
source:             DN42