There are two types of IP addresses used in networking – IPv4 and IPv6. IPv4 has been around the longest, and is the most widely used IP address format. However, IPv6 is becoming more and more common, and is even more necessary. Although there are some minor similarities between how each of these IP addresses work, the biggest distinction is the format.

Why are IPv4 and IPv6 needed?

IPv6 was introduced because there simply aren’t enough IPv4 addresses to support all the internet connections across the globe. IPv4 was set up to contain 4 sets of digits that are separated by periods and each number could contain a max value of 255. A sample IPv4 address looks like Given that the maximum numeric value for each number is 255, the number of possible addresses could amount to four billion.

Although four billion is a huge amount, it became evident that we would eventually use all of them up as the Internet space continues to expand, thus IPv6 was born. The format of IPv6 is much different than IPv4, as it uses a combination of letters and numbers, and contains eight sets of four digit combinations. An example of an IPv6 address would be a long string of letters and numbers separated by colons, like

With a much longer format, and much less restrictions, the amount of IPv6 addresses can be exponentially greater than IPv4, and running out should never be an issue. IPv6 is slowly making its way to becoming the industry standard, but there are some obstacles that need to be circumvented.

Current State of IPv6

Ideally, the entire world should be using IPv6 IP addresses right now. However, IPv4 IP addresses have long been in used, and this presents some compatibility issues. In addition, it can also be pretty costly to convert an established network that is already using IPv4, over to IPv6.

Still, a change is inevitable. While IPv4 will likely never be gone for good, it is important to keep the latter in mind. The good news is that all modern digital devices are equipped with both IPv4 and IPv6 technologies. Your device will automatically adapt to the network and how it was configured to work.

Proxy IP Addresses provided by Proxy Key Servers         

Currently, all proxy IP addresses provided by Proxy Key are in the IPv4 format. To make sure your home or business network is configured this way, you can check out this link.