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.
| Provider | Download Speed | Upload Speed | |
|---|---|---|---|
| Xfinity Cable Fiber | 119 Mbps | 12 Mbps | |
| AT&T DSL Fiber | 77 Mbps | 38 Mbps | |
| * Data from speed tests taken in the last 3 months | |||
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.
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
| Date | Download Speed | Upload Speed |
|---|---|---|
| 2022-06-23 | 118 Mbps | 17 Mbps |
| 2022-06-23 | 175 Mbps | 24 Mbps |
| 2022-06-23 | 7 Mbps | 18 Mbps |
| 2022-06-23 | 56 Mbps | 20 Mbps |
| 2022-06-23 | 79 Mbps | 16 Mbps |
| 2022-06-23 | 241 Mbps | 23 Mbps |
| 2022-06-23 | 117 Mbps | 18 Mbps |
| 2022-06-23 | 44 Mbps | 0 Mbps |
| 2022-06-23 | 38 Mbps | 17 Mbps |
| 2022-06-23 | 2 Mbps | 1 Mbps |
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.
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
| Date | Download Speed | Upload Speed |
|---|---|---|
| 2022-06-23 | 25 Mbps | 29 Mbps |
| 2022-06-23 | 50 Mbps | 16 Mbps |
| 2022-06-23 | 21 Mbps | 2 Mbps |
| 2022-06-23 | 32 Mbps | 6 Mbps |
| 2022-06-23 | 322 Mbps | 397 Mbps |
| 2022-06-23 | 271 Mbps | 160 Mbps |
| 2022-06-23 | 190 Mbps | 0 Mbps |
| 2022-06-23 | 63 Mbps | 228 Mbps |
| 2022-06-23 | 330 Mbps | 227 Mbps |
| 2022-06-23 | 164 Mbps | 132 Mbps |
We’ll run a download test and an upload test to give you the full picture of your internet connection.
This speed test goes directly towards making the speed data more accurate in your city.