In Diamond Bar there are 2 internet service providers, with Spectrum being the most popular. Spectrum offers cable and fiber internet service. In recent tests, Spectrum customers had an average download speed of 136 Mbps and an average upload speed of 11 Mbps. In addition to Spectrum, DSL and fiber internet service is also available from Frontier Communications.
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 |
|---|---|---|---|
| Spectrum Cable Fiber | 136 Mbps | 11 Mbps | 10 ms |
| Frontier Communications DSL Fiber | 154 Mbps | 105 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 136 Mbps for download speeds and 11 Mbps for upload speeds over 6,034 recent tests.
Spectrum 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 Diamond Bar. 28% of users saw download speeds between 100-250 Mbps, and 54% of users saw upload speeds between 10-25 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| September 24, 2023 | 558 Mbps | 23 Mbps | 15 ms |
| September 24, 2023 | 26 Mbps | 11 Mbps | 22 ms |
| September 24, 2023 | 63 Mbps | 10 Mbps | 17 ms |
| September 24, 2023 | 46 Mbps | 5 Mbps | 15 ms |
| September 24, 2023 | 560 Mbps | 32 Mbps | n/a ms |
| September 24, 2023 | 523 Mbps | 30 Mbps | 6 ms |
| September 24, 2023 | 211 Mbps | 21 Mbps | 13 ms |
| September 24, 2023 | 377 Mbps | 20 Mbps | 57 ms |
| September 24, 2023 | 62 Mbps | 17 Mbps | 56 ms |
| September 24, 2023 | 397 Mbps | 20 Mbps | 15 ms |
Frontier Communications is the 2nd most popular provider in Diamond Bar offering DSL and fiber internet service. Users have been getting 154 Mbps for download speeds and 105 Mbps for upload speeds over 3,979 recent tests.
Frontier Communications has the fastest average download speed, the fastest average upload speed, and the lowest latency out of all of the providers in Diamond Bar. 25% of users saw download speeds between 250-500 Mbps, and 26% of users saw upload speeds faster than 250 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| September 24, 2023 | 122 Mbps | 44 Mbps | 8 ms |
| September 24, 2023 | 336 Mbps | 223 Mbps | 5 ms |
| September 24, 2023 | 406 Mbps | 165 Mbps | 7 ms |
| September 24, 2023 | 473 Mbps | 443 Mbps | 13 ms |
| September 24, 2023 | 170 Mbps | 188 Mbps | 4 ms |
| September 24, 2023 | 77 Mbps | 38 Mbps | 6 ms |
| September 24, 2023 | 57 Mbps | 17 Mbps | 9 ms |
| September 24, 2023 | 651 Mbps | 555 Mbps | n/a ms |
| September 24, 2023 | 272 Mbps | 431 Mbps | 5 ms |
| September 24, 2023 | 151 Mbps | 89 Mbps | 6 ms |
We’ll run a download test and an upload test to give you the full picture of your internet connection.