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.
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.
ISP | IPv6 tests count | |
---|---|---|
1. | Ocn | 3,146 |
2. | Jpne | 3,119 |
3. | Mf-native6 | 2,966 |
4. | Bbix | 1,563 |
5. | Asahi | 991 |
6. | Internet Multifeed Co. | 816 |
7. | Biglobe | 782 |
8. | Japan Network Information Center | 769 |
9. | So-net Entertainment Corporation | 748 |
10. | Kddi | 470 |
11. | Softbank BB Corp. | 180 |
12. | Japan Network Information Center, Internet Initiative Japan Inc. | 157 |
13. | KDDI Corporation | 147 |
14. | Choopa | 104 |
15. | Chubu Telecommunications Company, Inc. | 103 |
16. | K-opticom | 99 |
17. | Hurricane Electric LLC | 91 |
18. | NTT Communications Corporation | 36 |
19. | InfoSphere | 35 |
20. | China Mobile communications corporation | 32 |
21. | Jupiter Telecommunication Co. Ltd | 29 |
22. | Linode | 28 |
23. | NTTDoCoMo | 26 |
24. | its communications Inc. | 25 |
25. | China Next Generation Internet CERNET2 | 25 |
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.
ISP | Unique IPv6 addresses | |
---|---|---|
1. | Jpne | 2,065 |
2. | Ocn | 1,986 |
3. | Mf-native6 | 1,480 |
4. | Bbix | 994 |
5. | Internet Multifeed Co. | 517 |
6. | Asahi | 516 |
7. | Biglobe | 510 |
8. | Japan Network Information Center | 363 |
9. | So-net Entertainment Corporation | 352 |
10. | Kddi | 268 |
11. | Softbank BB Corp. | 115 |
12. | Japan Network Information Center, Internet Initiative Japan Inc. | 108 |
13. | KDDI Corporation | 96 |
14. | K-opticom | 66 |
15. | Chubu Telecommunications Company, Inc. | 44 |
16. | Hurricane Electric LLC | 38 |
17. | Choopa | 29 |
18. | NTT Communications Corporation | 27 |
19. | Linode | 23 |
20. | NTTDoCoMo | 22 |
21. | its communications Inc. | 20 |
22. | China Mobile communications corporation | 17 |
23. | Jupiter Telecommunication Co. Ltd | 17 |
24. | Tokai | 17 |
25. | InfoSphere | 15 |
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.
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.
ISP | Test count | IPv4 | IPv4 % | IPv6 | IPv6 % | |
---|---|---|---|---|---|---|
1. | i3D.net B.V. Tokyo Japan | 17 | 0 | 0.0% | 17 | 100.0% |
2. | Zaq | 12 | 0 | 0.0% | 12 | 100.0% |
3. | xTom Limited | 5 | 0 | 0.0% | 5 | 100.0% |
4. | K-opticom | 99 | 5 | 5.1% | 94 | 94.9% |
5. | NTT Communications Corporation | 36 | 2 | 5.6% | 34 | 94.4% |
6. | China Next Generation Internet CERNET2 | 25 | 2 | 8.0% | 23 | 92.0% |
7. | Chubu Telecommunications Company, Inc. | 103 | 9 | 8.7% | 94 | 91.3% |
8. | STNet | 11 | 1 | 9.1% | 10 | 90.9% |
9. | Energia Communications | 22 | 2 | 9.1% | 20 | 90.9% |
10. | KDDI Corporation | 147 | 14 | 9.5% | 133 | 90.5% |
11. | Biglobe | 782 | 77 | 9.8% | 705 | 90.2% |
12. | Kddi | 470 | 57 | 12.1% | 413 | 87.9% |
13. | Jpne | 3,119 | 385 | 12.3% | 2,734 | 87.7% |
14. | Asahi | 991 | 147 | 14.8% | 844 | 85.2% |
15. | Japan Network Information Center | 769 | 118 | 15.3% | 651 | 84.7% |
16. | Ocn | 3,146 | 528 | 16.8% | 2,618 | 83.2% |
17. | Mf-native6 | 2,966 | 507 | 17.1% | 2,459 | 82.9% |
18. | Suzuka Cable Co., Ltd | 10 | 2 | 20.0% | 8 | 80.0% |
19. | Internet Multifeed Co. | 816 | 169 | 20.7% | 647 | 79.3% |
20. | So-net Entertainment Corporation | 748 | 162 | 21.7% | 586 | 78.3% |
21. | Tokai | 23 | 5 | 21.7% | 18 | 78.3% |
22. | Bbix | 1,563 | 343 | 21.9% | 1,220 | 78.1% |
23. | its communications Inc. | 25 | 6 | 24.0% | 19 | 76.0% |
24. | Choopa | 104 | 29 | 27.9% | 75 | 72.1% |
25. | Hurricane Electric LLC | 91 | 27 | 29.7% | 64 | 70.3% |
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.
ISP | Test count | IPv6 average | |
---|---|---|---|
1. | Zaq | 12 | 86.7 Mbps |
2. | Asahi | 991 | 44.6 Mbps |
3. | NTT Communications Corporation | 36 | 42.2 Mbps |
4. | Jupiter Telecommunication Co. Ltd | 29 | 40.0 Mbps |
5. | Chubu Telecommunications Company, Inc. | 103 | 37.3 Mbps |
6. | Linode | 28 | 34.5 Mbps |
7. | Japan Network Information Center | 769 | 32.9 Mbps |
8. | So-net Entertainment Corporation | 748 | 31.3 Mbps |
9. | KDDI Corporation | 147 | 28.5 Mbps |
10. | Jpne | 3,119 | 27.3 Mbps |
11. | Mf-native6 | 2,966 | 25.7 Mbps |
12. | Kddi | 470 | 24.7 Mbps |
13. | Ocn | 3,146 | 24.5 Mbps |
14. | Biglobe | 782 | 22.7 Mbps |
15. | Choopa | 104 | 21.9 Mbps |
16. | Bbix | 1,563 | 21.5 Mbps |
17. | K-opticom | 99 | 18.4 Mbps |
18. | Hurricane Electric LLC | 91 | 16.6 Mbps |
19. | NTTDoCoMo | 26 | 15.6 Mbps |
20. | Internet Multifeed Co. | 816 | 13.2 Mbps |
21. | Japan Network Information Center, Internet Initiative Japan Inc. | 157 | 13.0 Mbps |
22. | Softbank BB Corp. | 180 | 12.6 Mbps |
23. | xTom Limited | 5 | 11.1 Mbps |
24. | Choopa, LLC | 8 | 8.9 Mbps |
25. | its communications Inc. | 25 | 8.3 Mbps |