September data is now available for the Netflix ISP Speed Index, our monthly update on which Internet Service Providers (ISPs) provide the best prime-time Netflix streaming experience.
In the U.S., Verizon FiOS jumped nine spots to top the index with a speed of 3.17 Megabits per second (Mbps.) The rapid rise, which began last month, followed an interconnection agreement with the company that uncongested ports for mutual customers. Similar arrangements with Time Warner Cable and AT&T U-Verse also resulted in increased speeds in September of 2.87 Mbps and 2.77 Mbps respectively.
Six new European countries joined the index -- France, Germany, Belgium, Switzerland, Austria and Luxembourg -- following the launch of Netflix service in mid-September. Although still early days in these markets, all six were among the top 10 countries in terms of performance with speeds in excess of 3.12 Mbps. By comparison, while the US speed has risen about 500 Kilobits per second in the last two months, it averaged 2.72 Mbps for September.
The Netflix ISP Speed Index is based on data from the more than 50 million Netflix members worldwide who view over 1 billion hours of TV shows and movies streaming from Netflix each month. The listed speeds reflect the average performance during prime time of all Netflix streams on each ISP's network and are an indicator of the performance typically experienced across all users on an ISP network. A faster network generally means a better picture quality, quicker start times and fewer interruptions.
Note: The average performance is below the peak performance due to many factors including the variety of encodes Netflix uses to deliver the TV shows and movies as well as the variety of devices members use and home network conditions. These factors cancel out when comparing across ISPs.
The latest regional rankings are below.
Anne Marie Squeo is a member of the Netflix communications team.