Diamond Bar residents have 2 internet providers to choose from. Spectrum is the most popular provider, offering cable and fiber internet service. In our research, we have been seeing 106 Mbps for download speeds and 11 Mbps for upload speeds for Spectrum customers over 7,094 recent tests. In addition to Spectrum, DSL and fiber internet service is also available from Frontier Communications.
See more detailed speed and coverage data below.
| Provider | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| Spectrum Cable Fiber | 106 Mbps | 11 Mbps | 10 ms |
| Frontier Communications DSL Fiber | 89 Mbps | 87 Mbps | 6 ms |
| * Data from speed tests taken in the last 3 months | |||
Spectrum is the most popular provider in Diamond Bar offering cable and fiber internet service. Users have been getting 106 Mbps for download speeds and 11 Mbps for upload speeds over 7,094 recent tests.
Spectrum has the fastest average download speeds and the 2nd fastest average upload speeds out of all of the providers in Diamond Bar. 25% of users saw download speeds between 100-250 Mbps, and 56% of users saw upload speeds between 10-25 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| September 20, 2022 | 92 Mbps | 8 Mbps | 11 ms |
| September 20, 2022 | 10 Mbps | 1 Mbps | 20 ms |
| September 20, 2022 | 233 Mbps | 23 Mbps | n/a ms |
| September 20, 2022 | 318 Mbps | 22 Mbps | 6 ms |
| September 20, 2022 | 442 Mbps | 23 Mbps | 7 ms |
| September 20, 2022 | 12 Mbps | 5 Mbps | 7 ms |
| September 20, 2022 | 298 Mbps | 8 Mbps | 51 ms |
| September 20, 2022 | 389 Mbps | 13 Mbps | 14 ms |
| September 20, 2022 | 19 Mbps | 2 Mbps | 9 ms |
| September 20, 2022 | 93 Mbps | 39 Mbps | 13 ms |
Frontier Communications is the 2nd most popular provider in Diamond Bar offering DSL and fiber internet service. Users have been getting 89 Mbps for download speeds and 87 Mbps for upload speeds over 3,720 recent tests.
Frontier Communications has the 2nd fastest average download speeds and the fastest average upload speeds out of all of the providers in Diamond Bar. 26% of users saw download speeds between 50-100 Mbps, and 27% of users saw upload speeds between 100-250 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| September 20, 2022 | 318 Mbps | 114 Mbps | 11 ms |
| September 20, 2022 | 12 Mbps | 11 Mbps | 5 ms |
| September 20, 2022 | 2 Mbps | 8 Mbps | 26 ms |
| September 20, 2022 | 87 Mbps | 110 Mbps | 6 ms |
| September 20, 2022 | 46 Mbps | 43 Mbps | 345 ms |
| September 20, 2022 | 228 Mbps | 132 Mbps | 8 ms |
| September 20, 2022 | 100 Mbps | 121 Mbps | 8 ms |
| September 20, 2022 | 81 Mbps | 73 Mbps | n/a ms |
| September 20, 2022 | 55 Mbps | 56 Mbps | 6 ms |
| September 20, 2022 | 41 Mbps | 20 Mbps | n/a ms |
We’ll run a download test and an upload test to give you the full picture of your internet connection.