online CIDR and IP subnet calculator : Check host

18.66.193.0-18.66.193.255
18.66.193.0/24

18.66.194.0-18.66.195.255
18.66.194.0/23

18.66.196.0-18.66.199.255
18.66.196.0/22

18.66.200.0-18.66.207.255
18.66.200.0/21

18.66.208.0-18.66.215.255
18.66.208.0/21

18.66.216.0-18.66.219.255
18.66.216.0/22

18.66.220.0-18.66.221.255
18.66.220.0/23

18.66.222.0-18.66.222.255
18.66.222.0/24

IP subnet calculator 18.66.193.0-18.66.222.255