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

1So-net214.7 Mbps 243 Mbps 146 Mbps   429 clients took 383 tests recently
2Biglobe147.2 Mbps 175 Mbps 105 Mbps   200 clients took 268 tests recently
3iCloud Private136.8 Mbps 139 Mbps 29 Mbps   124 clients took 1390 tests recently
4Internet131.9 Mbps 120 Mbps 161 Mbps   130 clients took 205 tests recently
5xTom94.5 Mbps 135 Mbps 28 Mbps   120 clients took 214 tests recently
6J:COM85.8 Mbps 115 Mbps 24 Mbps   186 clients took 179 tests recently
7Amazon.com81.6 Mbps 86 Mbps 66 Mbps   191 clients took 179 tests recently
8SoftBank Corp.81.4 Mbps 107 Mbps 35 Mbps   820 clients took 633 tests recently
9au one net79.3 Mbps 112 Mbps 34 Mbps   3131 clients took 3416 tests recently
10NTT77.1 Mbps 92 Mbps 57 Mbps   671 clients took 1787 tests recently
11Oracle Cloud50.5 Mbps 54 Mbps 25 Mbps   88 clients took 313 tests recently
12M247 Europe41.1 Mbps 47 Mbps 27 Mbps   188 clients took 404 tests recently
13Datacamp32.5 Mbps 41 Mbps 17 Mbps   381 clients took 2026 tests recently
14Rakuten Mobile22.5 Mbps 27 Mbps 17 Mbps   323 clients took 319 tests recently
15NTT Docomo21.1 Mbps 22 Mbps 11 Mbps   1773 clients took 3756 tests recently
16Akamai18.7 Mbps 36 Mbps 7 Mbps   126 clients took 334 tests recently
17Internet16.1 Mbps 17 Mbps 13 Mbps   218 clients took 253 tests recently
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Averages 102.9 Mbps / 36.3 Mbps | 129 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]