online CIDR and IP subnet calculator : Check host

117.128.8.0-117.128.15.255
117.128.8.0/21

117.128.16.0-117.128.31.255
117.128.16.0/20

117.128.32.0-117.128.63.255
117.128.32.0/19

117.128.64.0-117.128.127.255
117.128.64.0/18

117.128.128.0-117.128.255.255
117.128.128.0/17

117.129.0.0-117.129.255.255
117.129.0.0/16

117.130.0.0-117.130.255.255
117.130.0.0/16

IP subnet calculator 117.128.8.0-117.130.255.255