subnet (netmask) / bit / Host 255.255.255.0 /24 / 254 255.255.255.128 / 25 / 128 255.255.255.192 / 26 / 64 255.255.255.224 / 27 / 32 255.255.255.240 / 28 / 16 255.255.255.248 / 29 / 8 255.255.255.252 / 30 / 4 255.255.255.254 / 31 / 2 255.255.255.255 / 32 / 1