Free tools
Subnet calculator
Enter an IPv4 or IPv6 block in CIDR notation to get the network, broadcast, host range, usable hosts, netmask and wildcard.
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Free tools
Enter an IPv4 or IPv6 block in CIDR notation to get the network, broadcast, host range, usable hosts, netmask and wildcard.
More free tools
Want these from 20+ locations with live streaming output? Run a looking glass →