online CIDR and IP subnet calculator : Check host

180.240.246.0-180.240.247.255
180.240.246.0/23

180.240.248.0-180.240.255.255
180.240.248.0/21

180.241.0.0-180.241.255.255
180.241.0.0/16

180.242.0.0-180.243.255.255
180.242.0.0/15

180.244.0.0-180.247.255.255
180.244.0.0/14

180.248.0.0-180.251.255.255
180.248.0.0/14

180.252.0.0-180.253.255.255
180.252.0.0/15

180.254.0.0-180.254.255.255
180.254.0.0/16

IP subnet calculator 180.240.246.0-180.254.255.255