IP Subnet Calculator

So you've read my Guide To Subnetting post. Now, you want to practice subnetting but you want to make sure that your answer is correct before going to the next question. Well, you're in luck. There are several tools that you can use in checking your answers. There are three IP Subnet Calculators that I use, one is the online version, one is offline version, and what I call the "mobile" version.

The online version, can be found here. This subnet calculator is very useful when you're not an administrator of the computer that you're using. If you are an administrator, I suggest you to use the offline version described below since it is way better than the online version.

The offline version, can be found here. You need to register your e-mail address and will require you to activate it so use your dedicated e-mail account for spam. I don't think they do send spam though, but you may never know. I believe it is one of the best, if not the best, free IP Subnet Calculator out there.

Unfortunately, the mobile version is not for every mobile phones out there. But, if you have an iPhone or iTouch, you can enjoy the benefit of having a subnet calculator in your hand. The app is called aSubnet. Go to App Store and search for it. Let's say thanks to the developer of the app for making it available for free.

Now that you have all the tools that you need for subnetting, go ahead and visit this site for practicing your mad subnetting skills! Just a reminder, make sure you know how to subnet because it will be in your CCNA exam, I'll guarantee you that.

Written By: Andr01d
"I know nothing except the fact of my ignorance" - Socrates