IPv4 Chart

Every device that can connect to the internet needs to have a unique identifier. This identifier is also known as an Internet Protocol (IP) address. The most common version of IP addresses is IPv4. In total, there are 4,294,967,296 IPv4 addresses. Which can seem like a lot. However, if you think about how much the internet has grown and how many devices we use, it won’t be a surprise to hear that there is a huge shortage of IPv4 addresses.

What is subnetting?

IPv4 addresses can be divided into a network portion and a host portion with the help of a subnet mask. This process, wherein the network is divided into smaller networks, is called subnetting and the smaller networks are called subnets (or subnetworks). It for example allows devices to determine whether another device is on the same network or not.

An IPv4 address can be broken into four octets (1 octet = 8 bits) and represents numbers from 0 to 255. Each octet is converted into a decimal and is separated by a period (dot). Therefore, the subnet mask is called a “quad-dotted decimal representation”. Since there are four blocks of 8 bits, every iPv4 address is 32 bits.

Internet Protocol (IPv4) Subnet Chart

As a network engineer or developer, you may want to look up subnet mask values. To make your life a little bit easier, we’ve created the following Internet Protocol (IPv4) chart.  You can use this chart to quickly look up how you might need to subnet your network.