J:COM Speed Test
J:COM is an internet service provider which operates in Japan. Currently it ranks on the place 9 from 409 providers in Japan.
263.25 Mb/s
Download Speed
51.32 Mb/s
Upload Speed
59 ms
Ping Latency
You can get Internet access in and other cities within Japan.
| Provider Name | Download Speed | Number of Tests |
|---|---|---|
|
NTT
|
431.6 Mb/s | 365432 |
|
Softbank BB
|
242.81 Mb/s | 119774 |
|
au one net
|
260.12 Mb/s | 100488 |
|
KDDI
|
349.78 Mb/s | 56221 |
|
Biglobe
|
350.29 Mb/s | 44129 |
|
So-net
|
428.04 Mb/s | 34848 |
|
Ntt Docomo
|
122.86 Mb/s | 34420 |
|
Rakuten Mobile Network
|
61.6 Mb/s | 32378 |
|
JPNE
|
398.27 Mb/s | 28541 |
|
K-Opticom Corporation
|
327.26 Mb/s | 26884 |
The download, upload and ping test will be performed to the closest server available near your location. This will mean that test will also be influenced by other factors such as quality of interconnection of J:COM with Internet backbone. This test is more relevant to assess real Internet connection quality than ISP sponsored test since those typically test against a server within the ISP and do not test real Internet speed.
Results based on tests in last 6 months (from 13.09.2024 to 13.03.2025).