tl/dr: Here is a nice chart for you! I created the below chart a few years ago to post up for reference some of my coworkers would forget what our subnet mask was suppose to be. It didn't really work ...

Have you learned to think and dream in hex yet? That is what you are going to have to look forward to as we transition to using IPv6. Because we will be working in hexadecimal numbers we may need a ...

The last edition of this column talked about subnets and introduced folding paper as an illustration of how subnets can be understood. This will be very useful as we proceed. MORE IPv4 SUBNETTING ...