XFINITY

Verizon

Cox

Spectrum

AT&T Internet

XFINITY

Verizon

Cox

Spectrum

AT&T Internet

19

27

20

24

32

Carrier TestCount

Speed Score

XFINITY 24,784,385 104.67

Verizon 6,200,240 102.57

Cox 7,078,494 101.84

Spectrum 30,494,013 87.56

AT&T Internet 13,928,153 76.00

Speed Score incorporates a measure of each provider’s download and upload speed to rank network speed performance.See next page for more detail.

Test Count

Mbps Mbps ms

24,283,160

115,445,472 230.82 56.21 30Mbps Mbps ms

Market Statistics

Ookla® compared user-initiated tests that are taken on various Speedtest applications connected to a fixed network, including tests taken on mobile phones over a Wi-Fi connection. All major provider results from the award period in the United States are represented in the map.

United States’ Tests by City

United States Q2-Q3 2018XFINITY is the United States’ Speedtest® Awards Winner for best internet provider. To win this award, XFINITY achieved a Speed Score™ of 104.67 with top speeds of 275.81 Mbps for download and 23.97 Mbps for upload. XFINITY also had the best 4K streaming experience with average download speeds of 119.85 Mbps.

Speed Score

104.67

Best Internet Provider

XFINITY

Verizon

Cox

Spectrum

AT&T Internet

XFINITY

Verizon

Cox

Spectrum

AT&T Internet

5,857,525

1,767,184

1,675,820

6,582,001

3,262,182

275.81

290.63

271.39

220.01

248.29

23.97

325.30

32.08

22.96

206.74

User Count

Top Download Speed: Top Upload Speed: Average Latency:

Best Internet Provider United States Q2-Q3 2018

How Speed Score WorksWhen analyzing best operators, Ookla solely considers top carriers (all carriers with 3% or more of total test samples in the market for the period). We then determine the best carrier using Speed Score which incorporates a measure of each provider’s download and upload speed to rank network speed performance (90% of the final Speed Score is attributed to download speed and the remaining 10% to upload speed). The Speed Score uses a modified trimean to demonstrate the download and upload speeds that are available across a provider’s network. We take speeds from the 10th percentile, 50th percentile (also known as the median), and 90th percentile, and combine them in a weighted average using a 1:2:1 ratio, respectively. We place the most emphasis on the download speeds and median speeds as those represent what most network providers’ customers will experience on a day-to-day basis.

4K ASRThe 4K Acceptable Speed Ratio (4K ASR) measures what percent of each carrier’s test samples deliver optimal download speeds (equaling or exceeding 25 Mbps) for streaming 4K video. As 4K video streaming is one of the more demanding uses of a home internet connection, this speed should also allow a consumer to easily enjoy a full range of internet activities (including working from home, gaming and social media) without interruption. While we at Ookla think fast speeds are paramount, ensuring a minimum acceptable experience is also a worthy measure of a network’s quality.

XFINITY had the highest 4K ASR during Q2-Q3 2018 with 84.5% of their samples meeting or exceeding the 25 Mbps threshold for download speed. Spectrum and Cox were a close second and third at 83.5% and 81.7%, respectively. AT&T Internet showed download speeds of 25 Mbps or higher just over half the time. The 4K ASR for CenturyLink was 34.6%.

Carrier NameDownload Trimean

90th Percentile

50thPercentile

10thPercentile

Upload Trimean

90th Percentile

50thPercentile

10thPercentile

XFINITY 114.84 275.81 83.16 17.25 13.12 23.97 11.64 5.23

Verizon 101.82 290.63 56.68 3.29 109.35 325.30 55.53 1.06

Cox 111.58 271.39 80.62 13.70 14.16 32.08 10.70 3.18

Spectrum 95.87 220.01 73.42 16.64 12.74 22.96 11.55 4.89

AT&T Internet 78.15 248.29 29.72 4.88 56.63 206.74 9.44 0.90

MethodologyFor more information on our methodology visit Speedtest.net/Awards

XFINITY

Spectrum

Cox

Verizon

AT&T Internet

CenturyLink

84.5%

83.5%

81.7%

70.6%

56.8%

34.6%