In Boulder there are 2 internet service providers, with Xfinity being the most popular. Xfinity offers cable and fiber internet service. In recent tests, Xfinity customers had an average download speed of 170 Mbps and an average upload speed of 16 Mbps. In addition to Xfinity, DSL and fiber internet service is also available from CenturyLink.
While our research has shown these to be the real speeds that users experience, there are many factors that can affect the actual download and upload speeds you will encounter. These may include the type of internet connection you have, the distance between your device and the router, the number of users on the network, and the strength of the signal.
| Provider | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| Xfinity Cable Fiber | 170 Mbps | 16 Mbps | 8 ms |
| CenturyLink DSL Fiber | 86 Mbps | 45 Mbps | 7 ms |
| * Data from speed tests taken in the last 3 months | |||
Xfinity is the most popular provider in Boulder offering cable and fiber internet service. Users have been getting 170 Mbps for download speeds and 16 Mbps for upload speeds over 27,500 recent tests.
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 Boulder. 30% of users saw download speeds between 100-250 Mbps, and 48% of users saw upload speeds between 10-25 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| May 20, 2023 | 119 Mbps | 17 Mbps | 24 ms |
| May 20, 2023 | 237 Mbps | 4 Mbps | 6 ms |
| May 20, 2023 | 323 Mbps | 21 Mbps | n/a ms |
| May 20, 2023 | 247 Mbps | 24 Mbps | n/a ms |
| May 20, 2023 | 212 Mbps | 41 Mbps | n/a ms |
| May 20, 2023 | 308 Mbps | 41 Mbps | n/a ms |
| May 20, 2023 | 247 Mbps | 41 Mbps | n/a ms |
| May 20, 2023 | 321 Mbps | 41 Mbps | n/a ms |
| May 20, 2023 | 247 Mbps | 41 Mbps | n/a ms |
| May 20, 2023 | 305 Mbps | 41 Mbps | 5 ms |
CenturyLink is the 2nd most popular provider in Boulder offering DSL and fiber internet service. Users have been getting 86 Mbps for download speeds and 45 Mbps for upload speeds over 1,907 recent tests.
CenturyLink has the 2nd fastest average download speed, the fastest average upload speed, and the lowest latency out of all of the providers in Boulder. 20% of users saw download speeds between 50-100 Mbps, and 22% of users saw upload speeds faster than 250 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| May 20, 2023 | 471 Mbps | 372 Mbps | 20 ms |
| May 20, 2023 | 92 Mbps | 95 Mbps | 9 ms |
| May 19, 2023 | 10 Mbps | 2 Mbps | 531 ms |
| May 19, 2023 | 97 Mbps | 91 Mbps | 6 ms |
| May 19, 2023 | 471 Mbps | 374 Mbps | 4 ms |
| May 19, 2023 | 95 Mbps | 95 Mbps | 4 ms |
| May 19, 2023 | 17 Mbps | 1 Mbps | 24 ms |
| May 18, 2023 | 470 Mbps | 377 Mbps | 3 ms |
| May 18, 2023 | 90 Mbps | 93 Mbps | 22 ms |
| May 18, 2023 | 167 Mbps | 144 Mbps | 13 ms |
We’ll run a download test and an upload test to give you the full picture of your internet connection.