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 8,474 recent tests, on average, we have been seeing 183 Mbps for download speeds and 17 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 September 26, 2023
ProviderDownload SpeedUpload SpeedLatency
Xfinity
Cable
Fiber
View Details →
183 Mbps17 Mbps11 ms
AT&T
DSL
Fiber
View Details →
108 Mbps55 Mbps7 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

17Mbps

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 17 Mbps for upload speeds over 8,474 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. 25% 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 Xfinity Speed Tests in Castro Valley

DateDownload SpeedUpload SpeedLatency
September 24, 2023309 Mbps22 Mbps15 ms
September 24, 2023252 Mbps41 Mbpsn/a ms
September 24, 2023154 Mbps4 Mbps10 ms
September 24, 2023604 Mbps23 Mbps13 ms
September 24, 2023209 Mbps1 Mbps8 ms
September 24, 2023745 Mbps22 Mbps7 ms
September 24, 2023350 Mbps36 Mbps23 ms
September 24, 202388 Mbps17 Mbps10 ms
September 24, 202322 Mbps1 Mbps20 ms
September 24, 20235 Mbps2 Mbps11 ms

AT&T

DSL
Fiber

Download Speed

108Mbps

Upload Speed

55Mbps

Latency

7ms

Overview

AT&T is the 2nd most popular provider in Castro Valley offering DSL and fiber internet service. Users have been getting 108 Mbps for download speeds and 55 Mbps for upload speeds over 4,827 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. 21% of users saw download speeds faster than 500 Mbps, and 30% of users saw upload speeds faster than 250 Mbps.

Download Speeds

Upload Speeds

Recent AT&T Speed Tests in Castro Valley

DateDownload SpeedUpload SpeedLatency
September 24, 202353 Mbps11 Mbpsn/a ms
September 24, 202350 Mbps6 Mbps22 ms
September 24, 202312 Mbps1 Mbps24 ms
September 24, 202313 Mbps1 Mbps24 ms
September 24, 2023525 Mbps297 Mbps9 ms
September 23, 202353 Mbps11 Mbpsn/a ms
September 23, 202321 Mbps2 Mbps29 ms
September 23, 2023689 Mbps253 Mbps6 ms
September 23, 202332 Mbps6 Mbps23 ms
September 23, 202350 Mbps5 Mbps22 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.