We believe that it's a conflict of interest when Internet service providers operate their own speed tests. A third party opinion is necessary and the provider shouldn't be allowed anywhere near the process. When providers host their own speed tests they eliminate the variables that you're here to test. Namely the Internet route itself. This test is unbiased, it tests and grades all providers on the same criteria. They want you to think your connection is running perfectly... but is it really?

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Do you want to research connection speed for Japan (JP)? TestMy.net's Download Speed Test and Upload Speed Test log connection information to allow users to research real world Internet speed test results. TestMy.net's speed test database stores information on millions of Internet connections. This tool can average connection speed for any Internet provider, country or city in the world. So you can easily average speed test results, compare maximum speeds, research logged results and find the fastest ISPs for Japan (JP).

Top ISP Rank in Japan

1J:COM162.3 Mbps 252 Mbps 24 Mbps   202 clients took 188 tests recently
2Asahi Net122.4 Mbps 134 Mbps 103 Mbps   190 clients took 221 tests recently
3So-net106.6 Mbps 116 Mbps 82 Mbps   524 clients took 388 tests recently
4Internet92.8 Mbps 129 Mbps 51 Mbps   186 clients took 194 tests recently
5NTT89.9 Mbps 112 Mbps 44 Mbps   762 clients took 712 tests recently
6M247 Europe61.8 Mbps 73 Mbps 35 Mbps   84 clients took 277 tests recently
7NTT Docomo59.6 Mbps 97 Mbps 9 Mbps   257 clients took 418 tests recently
8au one net55.1 Mbps 119 Mbps 11 Mbps   2095 clients took 4330 tests recently
9xTom53.5 Mbps 62 Mbps 30 Mbps   96 clients took 422 tests recently
10Datacamp53.1 Mbps 66 Mbps 29 Mbps   147 clients took 1088 tests recently
11SoftBank Corp.45.9 Mbps 55 Mbps 26 Mbps   413 clients took 1610 tests recently
12Internet37 Mbps 33 Mbps 41 Mbps   183 clients took 293 tests recently
13iCloud Private27.8 Mbps 28 Mbps 6 Mbps   142 clients took 370 tests recently
14Rakuten Mobile19.6 Mbps 27 Mbps 10 Mbps   195 clients took 194 tests recently
15Starlink11.1 Mbps 24 Mbps 4 Mbps   108 clients took 207 tests recently
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Averages 101.2 Mbps / 39.5 Mbps | 128 ms

Speed Test Log  

Real Speed Test

Other speed tests, especially tests offered by your Internet provider try to eliminate routing factors. This can make your connection appear faster than it really is. If you visit many websites in the North America, Europe, Australia or Asia the results returned here will be a more realistic representation of your useable connection. Truthfully, do you want to know how fast your connection is within your providers network or do you want to know how fast it is to the locations where the websites you visit are being hosted? TestMy.net is not a best case scenario connection test and will test your Internet under real world conditions. [read more] [hide text]