inetnum:            172.21.70.16 - 172.21.70.31
netname:            HUANGETECH-IPV4
country:            CN
admin-c:            HUANGETECH-DN42
tech-c:             HUANGETECH-DN42
mnt-by:             HUANGETECH-MNT
status:             ASSIGNED
cidr:               172.21.70.16/28
source:             DN42