Use this site to learn and practice subnetting.
If you are taking CCNA training or studying for the Network+ certification, subnetting practice is an essential requirement.
Subnetting.net provides a wide range of practice questions in the 'Practice' section and also in our timed subnetting quiz.
Don't foul out though, when the clock is running, you better bring your A-Game!
Check out our new CCNA Practice Questions. We promise, they're awesome!
Aug 8, 2014: We are proud to present our brand new CCNA Practice Questions!
We've also given our site a minor facelift. The top menu was getting a little crowded, so we've added a footer with quicklinks to everything you need.