Virtualbox software
Virtualbox network configuration
Comes from Virtualbox Network configuration
Configure the NAT network
Note
RFC 1918 - the following IP ranges are reserved for private networks
- 10.0.0.0/8 – 10.255.255.255
- 172.16.0.0/12 - 172.31.255.255
- 192.168.0.0/16 - 192.168.255.255
They are not routable on global internet
Here a good online tool to calculate network: https://www.ipaddressguide.com/cidr