Hack the Route Start free Open app Free tools
Networking tools
Calculators that show their working, free and without an account, each linked to the labs that teach what it computes.
- Subnet calculator Network, broadcast, host range, mask and wildcard for any IPv4 address and prefix, splitting into subnets, and every prefix from /0 to /32.
- Subnetting practice Random IPv4 subnetting questions: work out the network, broadcast, host range, host count and mask, then check each answer and see the working.