Internet Speeds in Castro Valley, CA

There are 2 internet providers operating in Castro Valley, the most popular being Xfinity. Xfinity offers cable and fiber internet service. In 10,309 recent tests, on average, we have been seeing 183 Mbps for download speeds and 18 Mbps for upload speeds for Xfinity customers. In addition to Xfinity, DSL and fiber internet service is also available from AT&T.

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 February 24, 2024
ProviderDownload SpeedUpload SpeedLatency
Xfinity
Cable
Fiber
View Details →
183 Mbps18 Mbps11 ms
AT&T
DSL
Fiber
View Details →
96 Mbps38 Mbps6 ms
* Data from speed tests taken in the last 3 months

Internet Providers in Castro Valley, CA

Xfinity

Cable
Fiber

Download Speed

183Mbps

Upload Speed

18Mbps

Latency

11ms

Overview

Xfinity is the most popular provider in Castro Valley offering cable and fiber internet service. Users have been getting 183 Mbps for download speeds and 18 Mbps for upload speeds over 10,309 recent tests.

Performance Breakdown

Xfinity has the fastest average download speed, the 2nd fastest average upload speed, and the 2nd lowest latency out of all of the providers in Castro Valley. 26% of users saw download speeds between 100-250 Mbps, and 53% of users saw upload speeds between 10-25 Mbps.

Download Speeds

Upload Speeds

Recent Xfinity Speed Tests in Castro Valley

DateDownload SpeedUpload SpeedLatency
February 23, 202492 Mbps37 Mbps14 ms
February 23, 2024266 Mbps34 Mbps15 ms
February 23, 202456 Mbps9 Mbps15 ms
February 23, 2024194 Mbps11 Mbps8 ms
February 23, 202424 Mbps22 Mbps1658 ms
February 23, 2024306 Mbps18 Mbps19 ms
February 23, 2024441 Mbps102 Mbps20 ms
February 23, 2024498 Mbps25 Mbps9 ms
February 23, 202413 Mbps1 Mbps14 ms
February 23, 2024487 Mbps41 Mbps5 ms

AT&T

DSL
Fiber

Download Speed

96Mbps

Upload Speed

38Mbps

Latency

6ms

Overview

AT&T is the 2nd most popular provider in Castro Valley offering DSL and fiber internet service. Users have been getting 96 Mbps for download speeds and 38 Mbps for upload speeds over 4,494 recent tests.

Performance Breakdown

AT&T has the 2nd fastest average download speed, the fastest average upload speed, and the lowest latency out of all of the providers in Castro Valley. 19% of users saw download speeds between 250-500 Mbps, and 25% of users saw upload speeds faster than 250 Mbps.

Download Speeds

Upload Speeds

Recent AT&T Speed Tests in Castro Valley

DateDownload SpeedUpload SpeedLatency
February 23, 2024362 Mbps251 Mbps8 ms
February 23, 202454 Mbps11 Mbps23 ms
February 23, 202492 Mbps91 Mbps9 ms
February 23, 202492 Mbps91 Mbps9 ms
February 23, 202425 Mbps26 Mbps14 ms
February 23, 2024809 Mbps598 Mbps5 ms
February 23, 202425 Mbps3 Mbps27 ms
February 23, 2024592 Mbps384 Mbps4 ms
February 23, 202483 Mbps56 Mbps12 ms
February 23, 2024549 Mbps762 Mbps6 ms

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Frequently Asked Questions

What internet providers are available in Castro Valley, CA?

Xfinity and AT&T currently operate in Castro Valley.

What is the most popular internet provider in Castro Valley, CA?

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

What is the fastest internet provider in Castro Valley, 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 Castro Valley are getting, Xfinity provides the fastest download and upload speeds.

Is there fiber internet in Castro Valley, CA?

AT&T and Xfinity provide fiber internet in Castro Valley.