These graphs show the evolution of default protocol, v6 address types, and average bandwidth in China 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. | Chinanet | 1,582 |
2. | China Unicom Network | 1,118 |
3. | China Mobile | 914 |
4. | China Mobile communications corporation | 456 |
5. | China Telecom | 274 |
6. | Cngi-cernet2 | 125 |
7. | Computer Network Information Center | 93 |
8. | China Next Generation Internet CERNET2 | 71 |
9. | Cloudflare, Inc. | 69 |
10. | Cernet | 37 |
11. | China Internet Network Information Center | 25 |
12. | Tsinghua University | 12 |
13. | DigitalOcean, LLC | 12 |
14. | China Science and Technology Network | 11 |
15. | Shenzhen Tencent Computer Systems Company Limited | 10 |
16. | CERNET2 IX at Huazhong University of Science and Technology | 9 |
17. | Hangzhou Alibaba Advertising Co | 6 |
18. | CERNET2 IX at Shanghai Jiaotong University | 5 |
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. | Chinanet | 1,147 |
2. | China Unicom Network | 838 |
3. | China Mobile | 731 |
4. | China Mobile communications corporation | 349 |
5. | China Telecom | 197 |
6. | Cngi-cernet2 | 107 |
7. | Computer Network Information Center | 71 |
8. | Cloudflare, Inc. | 66 |
9. | China Next Generation Internet CERNET2 | 53 |
10. | Cernet | 31 |
11. | China Internet Network Information Center | 18 |
12. | China Science and Technology Network | 11 |
13. | Tsinghua University | 10 |
14. | Shenzhen Tencent Computer Systems Company Limited | 8 |
15. | CERNET2 IX at Huazhong University of Science and Technology | 6 |
16. | Hangzhou Alibaba Advertising Co | 5 |
17. | CERNET2 IX at Shanghai Jiaotong University | 4 |
18. | DigitalOcean, LLC | 2 |
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. | DigitalOcean, LLC | 12 | 2 | 16.7% | 10 | 83.3% |
2. | Cloudflare, Inc. | 69 | 21 | 30.4% | 48 | 69.6% |
3. | China Internet Network Information Center | 25 | 9 | 36.0% | 16 | 64.0% |
4. | CERNET2 IX at Shanghai Jiaotong University | 5 | 2 | 40.0% | 3 | 60.0% |
5. | Shenzhen Tencent Computer Systems Company Limited | 10 | 4 | 40.0% | 6 | 60.0% |
6. | China Mobile | 914 | 376 | 41.1% | 538 | 58.9% |
7. | China Mobile communications corporation | 456 | 191 | 41.9% | 265 | 58.1% |
8. | Computer Network Information Center | 93 | 40 | 43.0% | 53 | 57.0% |
9. | CERNET2 IX at Huazhong University of Science and Technology | 9 | 4 | 44.4% | 5 | 55.6% |
10. | China Unicom Network | 1,118 | 503 | 45.0% | 615 | 55.0% |
11. | China Telecom | 274 | 127 | 46.4% | 147 | 53.6% |
12. | Chinanet | 1,582 | 777 | 49.1% | 805 | 50.9% |
13. | Cngi-cernet2 | 125 | 67 | 53.6% | 58 | 46.4% |
14. | Cernet | 37 | 20 | 54.1% | 17 | 45.9% |
15. | China Next Generation Internet CERNET2 | 71 | 41 | 57.7% | 30 | 42.3% |
16. | Hangzhou Alibaba Advertising Co | 6 | 4 | 66.7% | 2 | 33.3% |
17. | China Science and Technology Network | 11 | 8 | 72.7% | 3 | 27.3% |
18. | Tsinghua University | 12 | 10 | 83.3% | 2 | 16.7% |
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. | Cloudflare, Inc. | 69 | 95.1 Mbps |
2. | China Mobile communications corporation | 456 | 40.8 Mbps |
3. | China Telecom | 274 | 31.6 Mbps |
4. | Cngi-cernet2 | 125 | 28.3 Mbps |
5. | China Unicom Network | 1,118 | 23.1 Mbps |
6. | China Mobile | 914 | 13.7 Mbps |
7. | China Next Generation Internet CERNET2 | 71 | 10.7 Mbps |
8. | Chinanet | 1,582 | 9.7 Mbps |
9. | Computer Network Information Center | 93 | 0.5 Mbps |
10. | China Science and Technology Network | 11 | 0.3 Mbps |
11. | Cernet | 37 | 0.1 Mbps |
12. | China Internet Network Information Center | 25 | 0.0 Mbps |
13. | Tsinghua University | 12 | 0.0 Mbps |
14. | CERNET2 IX at Huazhong University of Science and Technology | 9 | 0.0 Mbps |
15. | Hangzhou Alibaba Advertising Co | 6 | 0.0 Mbps |
16. | Shenzhen Tencent Computer Systems Company Limited | 10 | 0.0 Mbps |
17. | CERNET2 IX at Shanghai Jiaotong University | 5 | 0.0 Mbps |
18. | DigitalOcean, LLC | 12 | 0.0 Mbps |