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 203 Mbps and an average upload speed of 23 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 | 203 Mbps | 23 Mbps | 8 ms |
| CenturyLink DSL Fiber | 92 Mbps | 93 Mbps | 5 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 203 Mbps for download speeds and 23 Mbps for upload speeds over 27,236 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 250-500 Mbps, and 51% of users saw upload speeds between 10-25 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| June 17, 2024 | 553 Mbps | 23 Mbps | 7 ms |
| June 17, 2024 | 456 Mbps | 30 Mbps | 9 ms |
| June 17, 2024 | 162 Mbps | 38 Mbps | 12 ms |
| June 17, 2024 | 432 Mbps | 23 Mbps | 9 ms |
| June 17, 2024 | 342 Mbps | 24 Mbps | 9 ms |
| June 17, 2024 | 179 Mbps | 23 Mbps | 6 ms |
| June 17, 2024 | 238 Mbps | 39 Mbps | 4 ms |
| June 17, 2024 | 305 Mbps | 41 Mbps | 5 ms |
| June 17, 2024 | 112 Mbps | 19 Mbps | 8 ms |
| June 17, 2024 | 137 Mbps | 24 Mbps | 12 ms |
CenturyLink is the 2nd most popular provider in Boulder offering DSL and fiber internet service. Users have been getting 92 Mbps for download speeds and 93 Mbps for upload speeds over 1,334 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. 37% of users saw download speeds between 50-100 Mbps, and 38% of users saw upload speeds between 50-100 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| June 17, 2024 | 336 Mbps | 268 Mbps | 4 ms |
| June 17, 2024 | 49 Mbps | 121 Mbps | 5 ms |
| June 17, 2024 | 93 Mbps | 78 Mbps | 6 ms |
| June 17, 2024 | 1 Mbps | 1 Mbps | 99 ms |
| June 17, 2024 | 92 Mbps | 96 Mbps | 22 ms |
| June 17, 2024 | 176 Mbps | 150 Mbps | 4 ms |
| June 17, 2024 | 69 Mbps | 92 Mbps | 12 ms |
| June 17, 2024 | 97 Mbps | 96 Mbps | 3 ms |
| June 17, 2024 | 85 Mbps | 1 Mbps | 2 ms |
| June 17, 2024 | 20 Mbps | 4 Mbps | 17 ms |
We’ll run a download test and an upload test to give you the full picture of your internet connection.