IP subnet calculator

3.18.160.0-3.20.129.255

3.18.160.0-3.18.191.255
3.18.160.0/19

3.18.192.0-3.18.255.255
3.18.192.0/18

3.20.0.0-3.20.127.255
3.20.0.0/17

3.20.128.0-3.20.129.255
3.20.128.0/23

3.19.0.0-3.19.255.255
3.19.0.0/16