Note:
Enter your netmask(s) in CIDR notation (/25) or dotted decimals (255.255.255.0). Inverse netmasks are recognized.
Look at the space between the bits of the addresses: The bits before it are the network part of the address, the bits after it are the host part. You can see two simple facts: In a network address all host bits are zero, in a broadcast address they are all set.
The class of your network is determined by its first bits.
Use IP & CIDR Netmask: | 192.168.0.1/24 |
Or IP & Netmask: | 192.168.0.1 255.255.252.0 |
Or IP & Wildcard Mask: | 192.168.0.1 0.0.3.255 |