The subscription video-on-demand giant said there was “a lot of momentum” in Spain during September.
Vodafone rose two spots to take first place in the scale with an average monthly speed of 3.77 Mbps in September, up from from 3.69 Mbps in August.
Ono, Jazztel and Orange each climbed two places to rank second, third and fourth respectively.
Meanwhile Euskaltel dropped from first to fifth place with its average speed decreasing from 3.85 Mbps in August to 3.66 Mbps in September. R similarly fell from second to sixth spot as its speed dropped to 3.62 Mbps.
In Portugal MEO moved from second to first spot and had what Netflix described as a “significant increase in average monthly speed”, jumping from 3.2 Mbps in August to 3.52 Mbps in September.
With MEO’s gain, Cabovisao was forced into second place despite its average speed remaining roughly static at 3.32 Mbps, compared to 3.33 Mbps a month earlier.
The Netflix ISP Speed Index is a measure of prime time Netflix performance on a particular ISP and not a measure of overall performance for other services data that may travel across the specific ISP network. Faster Netflix performance generally means better picture quality, quicker start times and fewer interruptions, according to Netflix.