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Subnet Sprint

60 seconds. Type the answer to each subnet question and press Enter. Network, broadcast, mask, host count — they rotate. Cheat sheet at the bottom; using it costs you time.

// instructions

60 seconds. Crunch as many subnets as you can.

We show you a CIDR (like 192.168.1.0/24) and ask one thing about it — network, broadcast, mask, host count, or first usable IP. Type the answer and press Enter. Quick correct, quick wrong, on to the next.

/16255.255.0.065,534 hosts
/20255.255.240.04,094 hosts
/22255.255.252.01,022 hosts
/23255.255.254.0510 hosts
/24255.255.255.0254 hosts
/25255.255.255.128126 hosts
/26255.255.255.19262 hosts
/27255.255.255.22430 hosts
/28255.255.255.24014 hosts