Therefore there are (32 - 24 =) 8 variable bits.
There are 256 combinations of 8 bits.
| Binary | Decimal | |
|---|---|---|
| Netmask | 11111111 11111111 11111111 00000000 | 255.255.255.0 |
| Base IP address (e.g.) | 11000000 10101000 00001010 00000101 | 192.168.10.5 |
| Start address | 11000000 10101000 00001010 00000000 | 192.168.10.0 |
| Last address | 11000000 10101000 00001010 11111111 | 192.168.10.255 |
Subnet size: 256 addresses
CIDR notation: 192.168.10.0/24