online CIDR and IP subnet calculator : Check host

3.80.21.0-3.80.21.255
3.80.21.0/24

3.80.22.0-3.80.23.255
3.80.22.0/23

3.80.24.0-3.80.31.255
3.80.24.0/21

3.80.32.0-3.80.63.255
3.80.32.0/19

3.80.64.0-3.80.127.255
3.80.64.0/18

3.80.128.0-3.80.255.255
3.80.128.0/17

3.81.152.0-3.81.152.127
3.81.152.0/25

3.81.0.0-3.81.127.255
3.81.0.0/17

3.81.128.0-3.81.143.255
3.81.128.0/20

3.81.144.0-3.81.151.255
3.81.144.0/21

IP subnet calculator 3.80.21.0-3.81.152.127