Internet Speeds in Sunnyvale, CA

There are 3 internet providers operating in Sunnyvale, the most popular being Xfinity. Xfinity offers cable internet service. In 37,521 recent tests, on average, we have been seeing 124 Mbps for download speeds and 13 Mbps for upload speeds for Xfinity customers. In addition to Xfinity, DSL, fiber and fixed wireless internet service is also available from AT&T and Sail Internet.

While these are the real speeds we have been seeing in our research, there are many factors that go into the actual download and upload speeds you will encounter.

Last updated on December 1, 2023
ProviderDownload SpeedUpload SpeedLatency
Xfinity
Cable
View Details →
124 Mbps13 Mbps9 ms
AT&T
DSL
Fiber
View Details →
100 Mbps81 Mbps7 ms
Sail Internet
Fixed Wireless
View Details →
103 Mbps52 Mbps7 ms
* Data from speed tests taken in the last 3 months

Internet Providers in Sunnyvale, CA

Xfinity

Cable

Download Speed

124Mbps

Upload Speed

13Mbps

Latency

9ms

Overview

Xfinity is the most popular provider in Sunnyvale offering cable internet service. Users have been getting 124 Mbps for download speeds and 13 Mbps for upload speeds over 37,521 recent tests.

Performance Breakdown

Xfinity has the fastest average download speed, the 3rd fastest average upload speed, and the 3rd lowest latency out of all of the providers in Sunnyvale. 30% of users saw download speeds between 100-250 Mbps, and 46% of users saw upload speeds between 10-25 Mbps.

Download Speeds

Upload Speeds

Recent Xfinity Speed Tests in Sunnyvale

DateDownload SpeedUpload SpeedLatency
November 30, 202394 Mbps36 Mbps22 ms
November 30, 2023941 Mbps42 Mbps6 ms
November 30, 2023456 Mbps75 Mbps9 ms
November 30, 202367 Mbps1 Mbps6 ms
November 30, 2023923 Mbps37 Mbps5 ms
November 30, 2023818 Mbps22 Mbps7 ms
November 30, 202342 Mbps4 Mbps20 ms
November 30, 202311 Mbps4 Mbps6 ms
November 30, 202328 Mbps4 Mbps8 ms
November 30, 2023828 Mbps18 Mbps14 ms

AT&T

DSL
Fiber

Download Speed

100Mbps

Upload Speed

81Mbps

Latency

7ms

Overview

AT&T is the 2nd most popular provider in Sunnyvale offering DSL and fiber internet service. Users have been getting 100 Mbps for download speeds and 81 Mbps for upload speeds over 11,603 recent tests.

Performance Breakdown

AT&T has the 3rd fastest average download speed, the fastest average upload speed, and the 2nd lowest latency out of all of the providers in Sunnyvale. 19% of users saw download speeds between 50-100 Mbps, and 31% of users saw upload speeds faster than 250 Mbps.

Download Speeds

Upload Speeds

Recent AT&T Speed Tests in Sunnyvale

DateDownload SpeedUpload SpeedLatency
November 30, 202348 Mbps62 Mbps28 ms
November 30, 2023498 Mbps469 Mbps5 ms
November 30, 2023213 Mbps502 Mbps7 ms
November 30, 202329 Mbps47 Mbps8 ms
November 30, 2023541 Mbps601 Mbps22 ms
November 30, 202317 Mbps1 Mbps11 ms
November 30, 202362 Mbps93 Mbps15 ms
November 30, 202332 Mbps1 Mbps11 ms
November 30, 202380 Mbps4 Mbps7 ms
November 30, 2023319 Mbps12 Mbps11 ms

Sail Internet

Fixed Wireless

Download Speed

103Mbps

Upload Speed

52Mbps

Latency

7ms

Overview

Sail Internet is the 3rd most popular provider in Sunnyvale offering fixed wireless internet service. Users have been getting 103 Mbps for download speeds and 52 Mbps for upload speeds over 216 recent tests.

Performance Breakdown

Sail Internet has the 2nd fastest average download speed, the 2nd fastest average upload speed, and the lowest latency out of all of the providers in Sunnyvale. 29% of users saw download speeds between 100-250 Mbps, and 24% of users saw upload speeds between 50-100 Mbps.

Download Speeds

Upload Speeds

Recent Sail Internet Speed Tests in Sunnyvale

DateDownload SpeedUpload SpeedLatency
November 30, 202313 Mbps1 Mbps4 ms
November 20, 2023687 Mbps181 Mbps4 ms
November 20, 2023173 Mbps87 Mbps5 ms
November 16, 202322 Mbps20 Mbps4 ms
November 16, 2023192 Mbps1 Mbps19 ms
November 16, 2023114 Mbps12 Mbps18 ms
November 16, 20238 Mbps91 Mbps4 ms
November 15, 202367 Mbps1 Mbps4 ms
November 13, 202330 Mbps16 Mbps20 ms
November 13, 2023101 Mbps64 Mbps3 ms

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Frequently Asked Questions

What internet providers are available in Sunnyvale, CA?

Xfinity, AT&T and Sail Internet currently operate in Sunnyvale.

What is the most popular internet provider in Sunnyvale, CA?

Xfinity is currently the most popular internet provider in Sunnyvale based on the number of speed tests in the last 3 months.

What is the fastest internet provider in Sunnyvale, CA?

The fastest internet provider for you is going to differ based on your needs, and which providers actually serve your home. However, when it comes to the real speeds users in Sunnyvale are getting, Xfinity provides the fastest download and upload speeds.

Is there fiber internet in Sunnyvale, CA?

AT&T provides fiber internet in Sunnyvale.