Speedtest.net

Speedtest.net, also known as Speedtest by Ookla, is a web service that provides free analysis of Internet access performance metrics, such as connection data rate and latency. It is the flagship product of Ookla, a web testing and network diagnostics company founded in 2006, and based in Seattle, Washington, United States. The service measures the data throughput (speed) and latency (connection delay) of an Internet connection against one of over 16,000 geographically dispersed servers (as of December 2023). Each test measures the data rate for the download direction, i.e. from the server to the users computer, and the upload data rate, i.e. from the user's computer to the server. The tests are performed within the user's web browser or within mobile apps. As of 17 February 2024, over 52.3 billion internet speed tests have been completed. Tests were previously performed over HTTP. To improve accuracy, Speedtest.net now performs tests via a custom protocol over TCP sockets. The site also offers detailed statistics based on test results. This data has been used by numerous publications in the analysis of internet access data rates around the world.