online CIDR and IP subnet calculator : Check host

193.12.31.220-193.12.31.223
193.12.31.220/30

193.12.31.224-193.12.31.255
193.12.31.224/27

193.12.32.0-193.12.63.255
193.12.32.0/19

193.12.64.0-193.12.127.255
193.12.64.0/18

193.12.128.0-193.12.255.255
193.12.128.0/17

193.13.16.0-193.13.16.127
193.13.16.0/25

193.13.16.128-193.13.16.191
193.13.16.128/26

193.13.16.192-193.13.16.207
193.13.16.192/28

193.13.0.0-193.13.15.255
193.13.0.0/20

IP subnet calculator 193.12.31.220-193.13.16.207