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. | Jpne | 3,373 |
2. | Internet Multifeed Co. | 2,846 |
3. | BIGLOBE Inc. | 2,765 |
4. | NTT Communications Corporation | 2,726 |
5. | Japan Network Information Center | 1,091 |
6. | ASAHI Net, Inc. | 1,028 |
7. | Bbix | 996 |
8. | Rakuten Mobile | 659 |
9. | KDDI Corporation | 609 |
10. | Sony Network Communications Inc. | 543 |
11. | Internet Initiative Japan Inc. | 520 |
12. | Chubu Telecommunications Co., Inc. | 104 |
13. | Oracle Corporation | 103 |
14. | The Constant Company, LLC | 98 |
15. | Linode, LLC | 96 |
16. | Softbank BB Corp. | 95 |
17. | Cloudflare, Inc. | 81 |
18. | The Constant Company | 72 |
19. | OPTAGE Inc. | 70 |
20. | Chinanet | 67 |
21. | Amazon.com, Inc. | 67 |
22. | Cloudflarewarp | 65 |
23. | Ntt Docomo, Inc. | 59 |
24. | SAKURA Internet Inc. | 58 |
25. | China Unicom Network | 52 |
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 | 1,837 |
2. | NTT Communications Corporation | 1,735 |
3. | Internet Multifeed Co. | 1,436 |
4. | BIGLOBE Inc. | 814 |
5. | Japan Network Information Center | 745 |
6. | ASAHI Net, Inc. | 631 |
7. | Bbix | 563 |
8. | Sony Network Communications Inc. | 361 |
9. | KDDI Corporation | 349 |
10. | Rakuten Mobile | 322 |
11. | Internet Initiative Japan Inc. | 184 |
12. | Softbank BB Corp. | 78 |
13. | Chubu Telecommunications Co., Inc. | 77 |
14. | Cloudflare, Inc. | 64 |
15. | OPTAGE Inc. | 57 |
16. | Cloudflarewarp | 50 |
17. | Ntt Docomo, Inc. | 50 |
18. | China Unicom Network | 48 |
19. | Linode, LLC | 48 |
20. | Chinanet | 47 |
21. | Oracle Corporation | 44 |
22. | The Constant Company, LLC | 43 |
23. | Amazon.com, Inc. | 37 |
24. | The Constant Company | 35 |
25. | Akamai Technologies, Inc. | 30 |
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. | Sony Global Solutions Inc. | 8 | 0 | 0.0% | 8 | 100.0% |
2. | Aphros Science | 9 | 0 | 0.0% | 9 | 100.0% |
3. | GMO Internet, Inc | 5 | 0 | 0.0% | 5 | 100.0% |
4. | Ntt Docomo, Inc. | 59 | 7 | 11.9% | 52 | 88.1% |
5. | Energia Communications | 8 | 1 | 12.5% | 7 | 87.5% |
6. | Nttpcipv6 | 7 | 1 | 14.3% | 6 | 85.7% |
7. | Google, LLC | 19 | 3 | 15.8% | 16 | 84.2% |
8. | Chubu Telecommunications Co., Inc. | 104 | 20 | 19.2% | 84 | 80.8% |
9. | its communications Inc. | 14 | 3 | 21.4% | 11 | 78.6% |
10. | NTT PC Communications, Inc. | 23 | 5 | 21.7% | 18 | 78.3% |
11. | Jcn | 23 | 5 | 21.7% | 18 | 78.3% |
12. | TOKAI Communications Corporation | 9 | 2 | 22.2% | 7 | 77.8% |
13. | STNet, Incorporated | 9 | 2 | 22.2% | 7 | 77.8% |
14. | Asia Pacific Network Information Centre | 26 | 6 | 23.1% | 20 | 76.9% |
15. | Community Network Center Inc. | 13 | 3 | 23.1% | 10 | 76.9% |
16. | NTT Communications Corporation | 2,726 | 656 | 24.1% | 2,070 | 75.9% |
17. | SAKURA Internet Inc. | 58 | 14 | 24.1% | 44 | 75.9% |
18. | The Constant Company, LLC | 98 | 24 | 24.5% | 74 | 75.5% |
19. | Jpne | 3,373 | 840 | 24.9% | 2,533 | 75.1% |
20. | Rakuten Mobile | 659 | 184 | 27.9% | 475 | 72.1% |
21. | Internet Multifeed Co. | 2,846 | 798 | 28.0% | 2,048 | 72.0% |
22. | Sony Network Communications Inc. | 543 | 153 | 28.2% | 390 | 71.8% |
23. | BIGLOBE Inc. | 2,765 | 783 | 28.3% | 1,982 | 71.7% |
24. | Rainbow network limited | 7 | 2 | 28.6% | 5 | 71.4% |
25. | Internet Initiative Japan Inc. | 520 | 149 | 28.7% | 371 | 71.3% |
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. | Aphros Science | 9 | 82.8 Mbps |
2. | STNet, Incorporated | 9 | 55.1 Mbps |
3. | The Constant Company | 72 | 55.0 Mbps |
4. | The Constant Company, LLC | 98 | 50.9 Mbps |
5. | Tdnc | 6 | 44.5 Mbps |
6. | Oracle Corporation | 103 | 44.3 Mbps |
7. | Cloudflare, Inc. | 81 | 42.6 Mbps |
8. | Linode, LLC | 96 | 38.2 Mbps |
9. | SAKURA Internet Inc. | 58 | 37.0 Mbps |
10. | China Telecom | 11 | 35.3 Mbps |
11. | NTTDoCoMo | 13 | 33.5 Mbps |
12. | Sony Network Communications Inc. | 543 | 22.2 Mbps |
13. | OPTAGE Inc. | 70 | 14.5 Mbps |
14. | Japan Network Information Center | 1,091 | 14.3 Mbps |
15. | KDDI Corporation | 609 | 13.3 Mbps |
16. | Internet Multifeed Co. | 2,846 | 12.1 Mbps |
17. | Amazon.com, Inc. | 67 | 11.3 Mbps |
18. | Jpne | 3,373 | 9.8 Mbps |
19. | ASAHI Net, Inc. | 1,028 | 8.8 Mbps |
20. | STARCAT CABLE NETWORK Co ., LTD. | 10 | 8.6 Mbps |
21. | NTT Communications Corporation | 2,726 | 8.2 Mbps |
22. | Bbix | 996 | 7.6 Mbps |
23. | Internet Initiative Japan Inc. | 520 | 7.5 Mbps |
24. | Rakuten Mobile | 659 | 5.3 Mbps |
25. | BIGLOBE Inc. | 2,765 | 3.8 Mbps |