There are 2 internet providers operating in Cupertino, the most popular being Xfinity. Xfinity offers cable internet service. In 21,476 recent tests, on average, we have been seeing 152 Mbps for download speeds and 18 Mbps for upload speeds for Xfinity customers. In addition to Xfinity, DSL, fiber and fixed wireless 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 | Latency |
|---|---|---|---|
| Xfinity Cable | 152 Mbps | 18 Mbps | 10 ms |
| AT&T DSL Fiber Fixed Wireless | 185 Mbps | 109 Mbps | 6 ms |
| * Data from speed tests taken in the last 3 months | |||
Xfinity is the most popular provider in Cupertino offering cable internet service. Users have been getting 152 Mbps for download speeds and 18 Mbps for upload speeds over 21,476 recent tests.
Xfinity 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 Cupertino. 27% of users saw download speeds between 100-250 Mbps, and 37% of users saw upload speeds between 10-25 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| March 16, 2024 | 269 Mbps | 23 Mbps | 9 ms |
| March 16, 2024 | 89 Mbps | 21 Mbps | 12 ms |
| March 16, 2024 | 19 Mbps | 5 Mbps | 7 ms |
| March 16, 2024 | 796 Mbps | 225 Mbps | 13 ms |
| March 16, 2024 | 176 Mbps | 6 Mbps | 9 ms |
| March 16, 2024 | 119 Mbps | 18 Mbps | 7 ms |
| March 16, 2024 | 607 Mbps | 37 Mbps | 6 ms |
| March 16, 2024 | 692 Mbps | 236 Mbps | 5 ms |
| March 16, 2024 | 121 Mbps | 38 Mbps | 17 ms |
| March 16, 2024 | 581 Mbps | 22 Mbps | 6 ms |
AT&T is the 2nd most popular provider in Cupertino offering DSL, fiber and fixed wireless internet service. Users have been getting 185 Mbps for download speeds and 109 Mbps for upload speeds over 10,484 recent tests.
AT&T has the fastest average download speed, the fastest average upload speed, and the lowest latency out of all of the providers in Cupertino. 27% of users saw download speeds between 250-500 Mbps, and 31% of users saw upload speeds faster than 250 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| March 16, 2024 | 53 Mbps | 12 Mbps | 24 ms |
| March 16, 2024 | 126 Mbps | 148 Mbps | 6 ms |
| March 16, 2024 | 364 Mbps | 265 Mbps | 58 ms |
| March 16, 2024 | 51 Mbps | 83 Mbps | 8 ms |
| March 16, 2024 | 56 Mbps | 12 Mbps | 20 ms |
| March 16, 2024 | 358 Mbps | 293 Mbps | 5 ms |
| March 16, 2024 | 81 Mbps | 221 Mbps | 10 ms |
| March 16, 2024 | 1 Mbps | 1 Mbps | 9 ms |
| March 16, 2024 | 725 Mbps | 373 Mbps | 5 ms |
| March 16, 2024 | 187 Mbps | 3 Mbps | 3205 ms |
We’ll run a download test and an upload test to give you the full picture of your internet connection.