These useful tools compare the response time of your current DNS with other publicly available DNS servers to find the one that would facilitate the best possible performance. There are several ways to test the response time of available DNS servers, but the fastest and easiest way is to use a DNS benchmarking application. By finding and connecting to the best DNS server in your region you can literally double web browsing speeds in some cases. This is where “DNS optimization” comes into play. Although your ISP typically uses one of their own DNS servers, if you're able to find a better one (See our list of Top 10 Public DNS Servers.), you have the option of manually changing your DNS to significantly speed up your web browsing experience. However, some DNS servers may be outdated, inefficient, or located too far from you to operate optimally. In simple terms, these servers are how the internet transfers data around the globe. One commonly overlooked setting that has a major effect on your internet browsing speed is the Domain Name Server (DNS) that your computer is communicating with.