Netflix Knows the Fastest ISPs

When it comes to figuring out which ISP has the best Internet speeds, Netflix knows the numbers. The company is a great source for this type of information, considering their service helps users everywhere stream movies and television content right into their homes. “We find ourselves in the unique position,” wrote Ken Florance, director of content delivery at Netflix, “of having insight into the performance of hundreds of millions of long duration, high-definition video streams delivered over the Internet.”

When you check your own speeds via a service such as SpeedTest, you’re testing short bursts of activity. Netflix, though, is testing data at sustained transfer over time. “The throughput we are able to achieve with these streams can tell us a great deal about the actual capacity our subscribers are able to sustain to their homes. In the charts below, we’re using a time-weighted bitrate metric to represent the effective data throughput our subscribers receive over many of the top ISPs.”

Taking a look at the top sixteen Internet Service Providers (as listed by Netflix), one might be a tad surprised at the results. The chart clearly shows that Charter sustained the best overall results, with Comcast coming in a close second. Cox, Time-Warner and Cablevision round out the top five providers. At the bottom of the list, you’ll find ClearWire all by its lonesome. That isn’t very shocking.

Where does your ISP fall in this list?