online CIDR and IP subnet calculator : Check host

54.188.242.0-54.188.243.255
54.188.242.0/23

54.188.244.0-54.188.247.255
54.188.244.0/22

54.188.248.0-54.188.255.255
54.188.248.0/21

54.189.0.0-54.189.127.255
54.189.0.0/17

54.189.128.0-54.189.143.255
54.189.128.0/20

54.189.144.0-54.189.151.255
54.189.144.0/21

54.189.152.0-54.189.153.255
54.189.152.0/23

54.189.154.0-54.189.154.255
54.189.154.0/24

IP subnet calculator 54.188.242.0-54.189.154.255