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:COM163.5 Mbps 253 Mbps 24 Mbps   202 clients took 189 tests recently
2Asahi Net132.3 Mbps 147 Mbps 107 Mbps   198 clients took 253 tests recently
3So-net107.7 Mbps 117 Mbps 82 Mbps   529 clients took 395 tests recently
4Internet94.3 Mbps 129 Mbps 53 Mbps   186 clients took 192 tests recently
5NTT90 Mbps 111 Mbps 47 Mbps   774 clients took 712 tests recently
6Rakuten Mobile81.5 Mbps 129 Mbps 31 Mbps   208 clients took 726 tests recently
7M247 Europe61.8 Mbps 74 Mbps 34 Mbps   90 clients took 303 tests recently
8NTT Docomo55.5 Mbps 85 Mbps 9 Mbps   282 clients took 474 tests recently
9au one net55.3 Mbps 118 Mbps 11 Mbps   2116 clients took 4421 tests recently
10xTom54 Mbps 63 Mbps 30 Mbps   95 clients took 441 tests recently
11Datacamp53.1 Mbps 66 Mbps 30 Mbps   149 clients took 1154 tests recently
12SoftBank Corp.48.8 Mbps 59 Mbps 26 Mbps   438 clients took 1668 tests recently
13Internet38.6 Mbps 34 Mbps 43 Mbps   183 clients took 282 tests recently
14iCloud Private28.3 Mbps 28 Mbps 6 Mbps   143 clients took 365 tests recently
15Starlink11.6 Mbps 25 Mbps 4 Mbps   109 clients took 209 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]