

We can see two things: all host bits are zeroes in a network address, in a broadcast address they are all set.įirst bits determine the class of your network from A to E. This free online IPv4 subnet calculator also can be used as a teaching tool and presents the subnetting results as easy-to-understand binary values. The wildcard is the inverse netmask used for access control lists (ACL's) in Cisco routers. Cisco wildcard mask, host range and quantity of hosts.
