online CIDR and IP subnet calculator : Check host

180.183.121.0-180.183.121.255
180.183.121.0/24

180.183.122.0-180.183.123.255
180.183.122.0/23

180.183.124.0-180.183.127.255
180.183.124.0/22

180.183.128.0-180.183.135.255
180.183.128.0/21

180.183.136.0-180.183.139.255
180.183.136.0/22

180.183.140.0-180.183.141.255
180.183.140.0/23

180.183.142.0-180.183.142.255
180.183.142.0/24

IP subnet calculator 180.183.121.0-180.183.142.255