Japan IPv6 in Japan

These graphs show the evolution of default protocol, v6 address types, and average bandwidth in Japan over time.

They are generated using the data collected by the ipv6-test.com connection test page, and are updated on a monthly basis.

Overall IPv6 and v4 protocol support in Japan

This graph shows the evolution of IPv6 support vs IPv4 for all our connection test.

The numbers are percentages, so we can expect almost 100% of hosts supporting IPv4 with a slow growth for IPv6.

Top 25 internet service providers for IPv6 in Japan (Jun 2018)

  ISP IPv6 tests count
1.Jpne-ip615,364
2.Mf-transix-e13,848
3.Jpne8,921
4.Bbix7,612
5.Biglobe7,584
6.Mf-transix-w7,418
7.Ocn5,096
8.Japan Network Information Center2,272
9.Asahi1,797
10.Kddi1,461
11.SoftBank Corp.852
12.Iij774
13.So-net Entertainment Corporation740
14.Choopa554
15.Plala484
16.Linode360
17.Hurricane Electric LLC299
18.Sbb281
19.Zdm Network Solutions Llc279
20.InfoSphere267
21.Hurricane Electric252
22.NTTDoCoMo231
23.Jtcl202
24.interQ156
25.Zaq128

IPv6 and v4 protocol support in Japan (unique addresses)

This graph shows the evolution of IPv6 support vs IPv4 for unique users of our connection test.

The numbers are percentages, so we can expect a slow growth towards 50% v4 / 50% v6.

Top 25 internet service providers for IPv6 in Japan (unique addresses, Jun 2018)

  ISP Unique IPv6 addresses
1.Jpne-ip68,590
2.Mf-transix-e7,676
3.Jpne5,342
4.Bbix4,503
5.Biglobe4,120
6.Mf-transix-w4,090
7.Ocn2,761
8.Japan Network Information Center1,339
9.Asahi1,016
10.Kddi865
11.Iij551
12.SoftBank Corp.494
13.So-net Entertainment Corporation470
14.Plala249
15.Choopa240
16.NTTDoCoMo168
17.InfoSphere167
18.Sbb159
19.Hurricane Electric158
20.Hurricane Electric LLC139
21.Linode110
22.Zdm Network Solutions Llc91
23.Jtcl74
24.Tokai61
25.K-opticom55

Default browser protocol in Japan

This graph shows the percentage of browsers that default to IPv6 vs. IPv4 when visiting the ipv6-test connection test.

Hopefully, in the not so distant future, the v6 part will grow taller than the v4 one.

Default browser protocol in Japan (dual-stack users)

This graph shows the percentage of browsers that default to IPv6 vs. IPv4 for users that have both v4 and v6 connectivity.

Usually a system will default to v6 when it's available, but in some cases with tunneled connections, v4 stays the default.

Top 25 internet service providers for IPv6 default in Japan (Jun 2018)

  ISP Test count IPv4 IPv4 % IPv6 IPv6 %
1.Reliance Jio Infocomm Ltd800.0%8100.0%
2.Kabeldeutschland500.0%5100.0%
3.WIDE Project500.0%5100.0%
4.Cttnet600.0%6100.0%
5.Sinet900.0%9100.0%
6.Ssd2100.0%21100.0%
7.Zdm Network Solutions Llc27941.4%27598.6%
8.Multifeed1119.1%1090.9%
9.Homenoc1119.1%1090.9%
10.Zaq128129.4%11690.6%
11.MediaLive Japan, Inc.10110.0%990.0%
12.Hinet10110.0%990.0%
13.Jtcl2022110.4%18189.6%
14.NTTDoCoMo2312912.6%20287.4%
15.Biglobe7,58497812.9%6,60687.1%
16.Sannet751013.3%6586.7%
17.Mf-transix-w7,4181,09614.8%6,32285.2%
18.Hurricane Electric2524116.3%21183.7%
19.Energia Communications, Inc.6116.7%583.3%
20.Apnic Portables848816.7%4083.3%
21.Kddi1,46124416.7%1,21783.3%
22.Bbix7,6121,29817.1%6,31482.9%
23.Ipr39717.9%3282.1%
24.Jpne8,9211,60518.0%7,31682.0%
25.Jpne-ip615,3642,88418.8%12,48081.2%

IPv6 address types in Japan

Here you can see the evolution of address types over time, and measure usage of 6to4 and Teredo tunneled connectivity.

It should be noted that because 6rd works with native addresses, it cannot be detected here as tunneled. This is also the case with VPN based tunnels.

Downstream bandwidth in Japan

This graph illustrates the connection speed gap between IPv4 and IPv6, numbers represent v6 speed as percentage of v4 speed.

The lower IPv6 speeds are often caused by tunneling overhead or insufficient v6 connectivity or peering capacity at ISPs.

Top 25 internet service providers for IPv6 speed in Japan (Jun 2018)

  ISP Test count IPv6 average
1.Zaq128102.3 Mbps
2.So-net Entertainment Corporation74083.8 Mbps
3.Jtcl20283.7 Mbps
4.Homenoc1161.1 Mbps
5.Multifeed1159.3 Mbps
6.Bbix7,61256.7 Mbps
7.interQ15651.8 Mbps
8.Plala48443.8 Mbps
9.Jpne-ip615,36443.1 Mbps
10.K-opticom11142.3 Mbps
11.InfoSphere26740.4 Mbps
12.Tokai12737.2 Mbps
13.Kddi1,46136.4 Mbps
14.Nihon University635.7 Mbps
15.Mf-transix-e13,84835.0 Mbps
16.Sakura-ishikari1234.8 Mbps
17.Biglobe7,58434.8 Mbps
18.Asahi1,79734.4 Mbps
19.Tdnc1133.4 Mbps
20.NTTDoCoMo23132.9 Mbps
21.Ocn5,09632.7 Mbps
22.STNet932.1 Mbps
23.Sakura2130.4 Mbps
24.Mf-transix-w7,41829.4 Mbps
25.Jpne8,92129.4 Mbps