IPv4 Subnetting Quiz

Master the art of subnetting. Practice calculating network addresses, broadcasts, usable host ranges, and wildcard masks under pressure.

Ready to start?

You'll have 20 seconds per question. How deep is your subnetting knowledge?

How to use Subnet Quiz

Practice network, broadcast, mask, and host-range calculations under time pressure at increasing difficulty.

Worked example

For 192.168.10.64/27, the broadcast address is 192.168.10.95 and the next subnet begins at .96.

Common mistake

Counting from the entered host rather than the prefix boundary is the most common subnetting error.

Authoritative references