CIDR Calculator
Enter an IP or CIDR (e.g. 192.168.1.0/24) to get network / broadcast address, usable host range and count.
Enter an IPv4 address or CIDR block and click "Calculate".
How to use
Supports IPv4 single IPs and CIDR blocks; shows network/broadcast, usable hosts, netmask and wildcard. Runs entirely client-side.