J:COM Speed Test

J:COM is an internet service provider which operates in Japan. Currently it ranks on the place 7 from 456 providers in Japan.

Average results for J:COM

230.19 Mb/s

Download Speed

31.94 Mb/s

Upload Speed

55 ms

Ping Latency

J:COM coverage

You can get Internet access in Tokyo, Kumamoto, Osaka, Fukuoka, Sendai, Sapporo, and other cities within Japan.

Most popular ISPs in Japan
Provider Name Download Speed Number of Tests
258.28 Mb/s 258723
Softbank BB
174.35 Mb/s 196786
au one net
211.69 Mb/s 152437
353.33 Mb/s 88277
384.62 Mb/s 79924
Ntt Docomo
176.81 Mb/s 65600
328.12 Mb/s 59677
K-Opticom Corporation
113.36 Mb/s 52237
199.26 Mb/s 37083
318.92 Mb/s 36970

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 05.04.2023 to 05.10.2023).