There are 2 internet providers operating in San Mateo, the most popular being AT&T. AT&T offers DSL internet service. In 91 recent tests, on average, we have been seeing 4 Mbps for download speeds and 0 Mbps for upload speeds for AT&T customers. In addition to AT&T, cable internet service is also available from Xfinity.
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 | Latency |
|---|---|---|---|
| AT&T DSL | 4 Mbps | 1 Mbps | 59 ms |
| Xfinity Cable | 59 Mbps | 12 Mbps | 49 ms |
| * Data from speed tests taken in the last 3 months | |||
AT&T is the most popular provider in San Mateo offering DSL internet service. Users have been getting 4 Mbps for download speeds and 1 Mbps for upload speeds over 91 recent tests.
AT&T has the 2nd fastest average download speed, the 2nd fastest average upload speed, and the 2nd lowest latency out of all of the providers in San Mateo. 100% of users saw download speeds slower than 10 Mbps, and 100% of users saw upload speeds slower than 5 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| June 16, 2024 | 4 Mbps | 1 Mbps | 45 ms |
| June 11, 2024 | 3 Mbps | 1 Mbps | 43 ms |
| June 7, 2024 | 1 Mbps | 1 Mbps | 230 ms |
| June 7, 2024 | 5 Mbps | 1 Mbps | 48 ms |
| June 4, 2024 | 5 Mbps | 1 Mbps | 50 ms |
| June 3, 2024 | 3 Mbps | 1 Mbps | 64 ms |
| May 28, 2024 | 6 Mbps | 1 Mbps | 56 ms |
| May 21, 2024 | 1 Mbps | 1 Mbps | 36 ms |
Xfinity is the 2nd most popular provider in San Mateo offering cable internet service. Users have been getting 59 Mbps for download speeds and 12 Mbps for upload speeds over 79 recent tests.
Xfinity has the fastest average download speed, the fastest average upload speed, and the lowest latency out of all of the providers in San Mateo. 100% of users saw download speeds between 50-100 Mbps, and 100% of users saw upload speeds between 10-25 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| June 17, 2024 | 59 Mbps | 12 Mbps | 45 ms |
| June 16, 2024 | 59 Mbps | 12 Mbps | 48 ms |
| June 15, 2024 | 59 Mbps | 12 Mbps | 51 ms |
| June 14, 2024 | 59 Mbps | 12 Mbps | 46 ms |
| June 13, 2024 | 59 Mbps | 12 Mbps | 36 ms |
| June 12, 2024 | 59 Mbps | 12 Mbps | 50 ms |
| June 11, 2024 | 59 Mbps | 12 Mbps | 48 ms |
| June 10, 2024 | 59 Mbps | 12 Mbps | 49 ms |
| June 9, 2024 | 58 Mbps | 12 Mbps | 71 ms |
| June 8, 2024 | 59 Mbps | 12 Mbps | 50 ms |
We’ll run a download test and an upload test to give you the full picture of your internet connection.