Our results show that Ookla and NDT7 report similar speeds under most in-lab conditions, with the exception of networks that experience high latency, where Ookla consistently reports higher throughput. To study the effects of the test design, we conduct a series of controlled, in-lab experiments under a comprehensive set of network conditions and usage modes (e.g., TCP congestion control, native vs. Our goal is to characterize when and to what extent these two speed tests yield different results, as well as the factors that contribute to the differences. In this paper, we present the first-ever comparative evaluation of Ookla and NDT7 (the latest version of NDT), both in controlled and wide-area settings. Two prevalent speed tests, Ookla’s Speedtest and Measurement Lab’s Network Diagnostic Test (NDT), are often used for similar purposes, despite having significant differences in both the test design and implementation, and in the infrastructure used to perform measurements. Consumers, regulators, and ISPs all use client-based “speed tests” to measure network performance, both in single-user settings and in aggregate. ^ "South Africa's Mobile and Broadband Internet Speeds".^ "2018 Saudi Arabia Speedtest Market Report".^ "2017 United States Speedtest Market Report".^ "2017 Canada Speedtest Market Snapshot".^ "Downdetector is now part of Ookla".^ "Broadband speeds around the world"."Mike Apgar, co-founder of Ookla, global leader in broadband speed testing". List of countries by Internet connection speeds.ISPs and mobile carriers are ranked by their geographic performance. It also includes analysis of the current ISP and mobile markets of the respective country and breakdowns by region and city. In 2016, Speedtest began releasing market reports for different countries and cities, providing raw statistics regarding download and upload speeds for the past year for ISPs and mobile carriers. The new HTML5 based speed test went out of beta on January 9, 2018. Ookla took years to port the speed test from Flash to HTML5. started as a Flash-based broadband speed test service. Ookla was acquired by Ziff Davis in 2014. Clients reportedly included media companies like CNN and Disney, and telecommunications providers like AT&T, Verizon, and CenturyLink. At the time, Ookla derived its revenue primarily from fees paid by companies to license custom speed test and proprietary testing software. Īs of 2011, Ookla claimed 80% market share and was one of the top 1000 most popular websites. The domain has been used to host a speed test since 2000, however only became known to the general public after the acquisition by Ookla in 2006. Suttles suggested the name Ookla because he already owned the domain name in honor of his pet cat, who was in turn named for a character on the TV series Thundarr the Barbarian. The owner and operator of, Ookla, was established in 2006 by partners Mike Apgar and Doug Suttles. This data has been used by numerous publications in the analysis of Internet access data rates around the world. The site also offers detailed statistics based on test results. To further improve accuracy, now performs tests via direct Transmission Control Protocol (TCP) sockets and uses a custom protocol for communication between servers and clients. Tests were previously performed using the HyperText Transfer Protocol (HTTP) at Layer 7 of the OSI model. As of December 2023, over 51 billion speed tests have been completed. The tests are performed within the user's web browser or within mobile apps. from the server to the user computer, and the upload data rate, i.e. Each test measures the data rate for the download direction, i.e. 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). It is the flagship product of Ookla, a web testing and network diagnostics company founded in 2006, and based in Seattle, Washington, United States. , 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. English, French, German, Italian, Russian, Spanish, Indonesian, Polish, Portuguese, Swedish, Dutch
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