online CIDR and IP subnet calculator : Check host

203.109.180.202-203.109.180.203
203.109.180.202/31

203.109.180.204-203.109.180.207
203.109.180.204/30

203.109.180.208-203.109.180.223
203.109.180.208/28

203.109.180.224-203.109.180.255
203.109.180.224/27

203.109.181.0-203.109.181.255
203.109.181.0/24

203.109.182.0-203.109.183.255
203.109.182.0/23

203.109.184.0-203.109.191.255
203.109.184.0/21

203.109.192.0-203.109.255.255
203.109.192.0/18

IP subnet calculator 203.109.180.202-203.109.255.255