Subnet Mask Information
Have you taken a TCP/IP class? Yes, I did a long time ago. Learning TCP/IP and the OSI Model has been the eye-opener for me that really took my consulting career to the next level. I spent a week in class and learned all the binary math to figure out which subnet mask to use that would be most efficient for a network. This was great knowledge and I am good at math, but who wants to write all that math down?
That’s why we have calculators and cheat sheets!
Sometimes I just need to know quickly what a /18 is. I mean, I know most of the standard network codes by heart, but when working on a big project it helps to know all of them. Here is a quick Subnet Mask Cheat Sheet so I don’t have to go to some other website anymore.
Subnet Mask Cheat Sheet
Click the link below for more information on IP Subnet Mask Numbers
Subnet Mask Calculator
I use an Online Subnet Mask Calculator when I want a quick list of the networks included within a subnet. Check it out below;