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:COM161.9 Mbps 252 Mbps 24 Mbps   202 clients took 190 tests recently
2Asahi Net132.7 Mbps 148 Mbps 107 Mbps   198 clients took 252 tests recently
3So-net107.2 Mbps 116 Mbps 82 Mbps   527 clients took 392 tests recently
4Internet93 Mbps 128 Mbps 52 Mbps   185 clients took 195 tests recently
5NTT90.1 Mbps 111 Mbps 45 Mbps   772 clients took 705 tests recently
6Rakuten Mobile71.9 Mbps 112 Mbps 29 Mbps   203 clients took 626 tests recently
7M247 Europe62 Mbps 74 Mbps 35 Mbps   88 clients took 297 tests recently
8NTT Docomo55.6 Mbps 85 Mbps 9 Mbps   282 clients took 472 tests recently
9au one net55.3 Mbps 117 Mbps 11 Mbps   2115 clients took 4425 tests recently
10xTom53.7 Mbps 63 Mbps 30 Mbps   95 clients took 444 tests recently
11Datacamp53.2 Mbps 66 Mbps 30 Mbps   149 clients took 1151 tests recently
12SoftBank Corp.48.8 Mbps 59 Mbps 26 Mbps   435 clients took 1665 tests recently
13Internet38.6 Mbps 34 Mbps 43 Mbps   183 clients took 282 tests recently
14iCloud Private28.1 Mbps 28 Mbps 6 Mbps   143 clients took 369 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]