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 ...

In this article we cover one of what I have found to be the most common stumbling blocks for individuals attempting to pass the CCNA. This comes from experience in helping several individuals through ...

We found several utilities to help calculate IP subnets, subnet ranges, and CIDR addressing. IP Subnet Calculator (free) is a good, basic subnet calculator that shows available subnets based on IP ...

Advanced Subnet Calculator (free) provides subnet calculations, does host lookups, and supplies basic whois information on the service provider for a specific IP address. Be prepared for a big ...

When your sign up for Internet access on behalf of your company or purchase Web hosting for your company's Web servers, you will purchase either a dynamic IP address, a single static IP address or a ...