RealSpeeds

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 8,770 recent tests, on average, we have been seeing 119 Mbps for download speeds and 12 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 June 25 2022
ProviderDownload SpeedUpload Speed
Xfinity
Cable
Fiber
View Details →
119 Mbps12 Mbps
AT&T
DSL
Fiber
View Details →
77 Mbps38 Mbps
* Data from speed tests taken in the last 3 months

Internet Providers in Castro Valley, CA

Xfinity

Cable
Fiber

Download Speed

119Mbps

Upload Speed

12Mbps

Overview

Xfinity is the most popular provider in Castro Valley offering cable and fiber internet service. Users have been getting 119 Mbps for download speeds and 12 Mbps for upload speeds over 8,770 recent tests.

Speed Breakdown

Xfinity has the fastest average download speeds and the 2nd fastest average upload speeds out of all of the providers in Castro Valley. 28% of users saw download speeds between 100-250 Mbps, and 50% of users saw upload speeds between 10-25 Mbps.

Download Speeds

Upload Speeds

Recent Speed Tests

DateDownload SpeedUpload Speed
2022-06-23118 Mbps17 Mbps
2022-06-23175 Mbps24 Mbps
2022-06-237 Mbps18 Mbps
2022-06-2356 Mbps20 Mbps
2022-06-2379 Mbps16 Mbps
2022-06-23241 Mbps23 Mbps
2022-06-23117 Mbps18 Mbps
2022-06-2344 Mbps0 Mbps
2022-06-2338 Mbps17 Mbps
2022-06-232 Mbps1 Mbps

AT&T

DSL
Fiber

Download Speed

77Mbps

Upload Speed

38Mbps

Overview

AT&T is the 2nd most popular provider in Castro Valley offering DSL and fiber internet service. Users have been getting 77 Mbps for download speeds and 38 Mbps for upload speeds over 3,810 recent tests.

Speed Breakdown

AT&T has the 2nd fastest average download speeds and the fastest average upload speeds out of all of the providers in Castro Valley. 20% of users saw download speeds between 50-100 Mbps, and 25% of users saw upload speeds faster than 250 Mbps.

Download Speeds

Upload Speeds

Recent Speed Tests

DateDownload SpeedUpload Speed
2022-06-2325 Mbps29 Mbps
2022-06-2350 Mbps16 Mbps
2022-06-2321 Mbps2 Mbps
2022-06-2332 Mbps6 Mbps
2022-06-23322 Mbps397 Mbps
2022-06-23271 Mbps160 Mbps
2022-06-23190 Mbps0 Mbps
2022-06-2363 Mbps228 Mbps
2022-06-23330 Mbps227 Mbps
2022-06-23164 Mbps132 Mbps

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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.