J:COM Speed Test

J:COM is an internet service provider which operates in Japan. Currently it ranks on the place 8 from 449 providers in Japan.

Average results for J:COM

275.53 Mb/s

Download Speed

41.6 Mb/s

Upload Speed

51 ms

Ping Latency

J:COM coverage

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

Most popular ISPs in Japan
Provider Name Download Speed Number of Tests
270.48 Mb/s 452784
Softbank BB
141.23 Mb/s 159952
au one net
182.95 Mb/s 140222
427.94 Mb/s 68331
404.76 Mb/s 62021
235.14 Mb/s 56541
Ntt Docomo
158.98 Mb/s 54304
K-Opticom Corporation
147.72 Mb/s 41055
356.26 Mb/s 31532
Rakuten Mobile Network
88.35 Mb/s 30992

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 02.11.2023 to 02.05.2024).