To find the network addresses and host addresses range, we can use the following formula: Network address = IP address AND Subnet mask Host range = Inverse of subnet mask (subnet mask with all bits flipped) AND IP address For example, let's say we have the IP address 192.168.1.100 and a subnet mask of 255.255 .255 .192 :

Network address:
192.168.1.100 AND 255.255.255.192=
192.168.1.64
Therefore, the network address is 192.168.1.64.

Host range:
The inverse of the subnet mask is: 0.0.0.63 (binary: 00111111 ) 192.168.1.100 AND 0.0.0.63 =36