online CIDR and IP subnet calculator : Check host

3.12.213.0-3.12.213.255
3.12.213.0/24

3.12.214.0-3.12.215.255
3.12.214.0/23

3.12.216.0-3.12.223.255
3.12.216.0/21

3.12.224.0-3.12.255.255
3.12.224.0/19

3.14.0.0-3.14.15.255
3.14.0.0/20

3.14.16.0-3.14.23.255
3.14.16.0/21

3.14.24.0-3.14.27.255
3.14.24.0/22

3.14.28.0-3.14.29.255
3.14.28.0/23

3.13.0.0-3.13.255.255
3.13.0.0/16

IP subnet calculator 3.12.213.0-3.14.29.255