Portsmouth residents have 3 internet providers to choose from. Cox Communications is the most popular provider, offering cable and fiber internet service. In our research, we have been seeing 144 Mbps for download speeds and 23 Mbps for upload speeds for Cox Communications customers over 8,734 recent tests. Verizon and Spectrum also have coverage in Portsmouth, although they are not as popular as Cox Communications. These providers offer DSL, fiber and cable internet service.
See more detailed speed and coverage data below.
| Provider | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| Cox Communications Cable Fiber | 144 Mbps | 23 Mbps | 11 ms |
| Verizon DSL Fiber | 289 Mbps | 103 Mbps | 13 ms |
| Spectrum Cable | 249 Mbps | 20 Mbps | 46 ms |
| * Data from speed tests taken in the last 3 months | |||
Cox Communications is the most popular provider in Portsmouth offering cable and fiber internet service. Users have been getting 144 Mbps for download speeds and 23 Mbps for upload speeds over 8,734 recent tests.
Cox Communications has the 3rd fastest average download speed, the 2nd fastest average upload speed, and the lowest latency out of all of the providers in Portsmouth. 24% of users saw download speeds between 250-500 Mbps, and 37% of users saw upload speeds between 10-25 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| June 17, 2024 | 289 Mbps | 11 Mbps | 10 ms |
| June 17, 2024 | 87 Mbps | 12 Mbps | 13 ms |
| June 17, 2024 | 332 Mbps | 29 Mbps | 13 ms |
| June 17, 2024 | 227 Mbps | 57 Mbps | 10 ms |
| June 17, 2024 | 198 Mbps | 57 Mbps | 11 ms |
| June 17, 2024 | 268 Mbps | 1 Mbps | 19 ms |
| June 17, 2024 | 111 Mbps | 11 Mbps | 9 ms |
| June 17, 2024 | 98 Mbps | 29 Mbps | 12 ms |
| June 17, 2024 | 288 Mbps | 29 Mbps | 10 ms |
| June 16, 2024 | 136 Mbps | 54 Mbps | 11 ms |
Verizon is the 2nd most popular provider in Portsmouth offering DSL and fiber internet service. Users have been getting 289 Mbps for download speeds and 103 Mbps for upload speeds over 2,069 recent tests.
Verizon has the fastest average download speed, the fastest average upload speed, and the 2nd lowest latency out of all of the providers in Portsmouth. 29% of users saw download speeds between 250-500 Mbps, and 34% of users saw upload speeds between 100-250 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| June 17, 2024 | 506 Mbps | 250 Mbps | 13 ms |
| June 17, 2024 | 109 Mbps | 112 Mbps | 19 ms |
| June 17, 2024 | 609 Mbps | 495 Mbps | 10 ms |
| June 17, 2024 | 480 Mbps | 201 Mbps | 8 ms |
| June 17, 2024 | 687 Mbps | 143 Mbps | 11 ms |
| June 17, 2024 | 119 Mbps | 89 Mbps | 14 ms |
| June 17, 2024 | 94 Mbps | 92 Mbps | 16 ms |
| June 17, 2024 | 568 Mbps | 121 Mbps | 15 ms |
| June 16, 2024 | 273 Mbps | 171 Mbps | 18 ms |
| June 16, 2024 | 297 Mbps | 294 Mbps | 13 ms |
Spectrum is the 3rd most popular provider in Portsmouth offering cable internet service. Users have been getting 249 Mbps for download speeds and 20 Mbps for upload speeds over 93 recent tests.
Spectrum has the 2nd fastest average download speed, the 3rd fastest average upload speed, and the 3rd lowest latency out of all of the providers in Portsmouth. 46% of users saw download speeds between 250-500 Mbps, and 67% of users saw upload speeds between 10-25 Mbps.
Download Speeds
Upload Speeds
| Date | Download Speed | Upload Speed | Latency |
|---|---|---|---|
| June 17, 2024 | 146 Mbps | 11 Mbps | 46 ms |
| June 17, 2024 | 422 Mbps | 20 Mbps | 49 ms |
| June 16, 2024 | 144 Mbps | 11 Mbps | 46 ms |
| June 16, 2024 | 365 Mbps | 21 Mbps | 55 ms |
| June 15, 2024 | 144 Mbps | 11 Mbps | 46 ms |
| June 15, 2024 | 391 Mbps | 20 Mbps | 54 ms |
| June 14, 2024 | 146 Mbps | 11 Mbps | 62 ms |
| June 14, 2024 | 363 Mbps | 20 Mbps | 50 ms |
| June 13, 2024 | 146 Mbps | 11 Mbps | 43 ms |
| June 13, 2024 | 367 Mbps | 20 Mbps | 56 ms |
We’ll run a download test and an upload test to give you the full picture of your internet connection.