6 vs. 4 history

These graphs show the evolution of default protocol, v6 address types, and average bandwidth over time. They are generated using the data collected by tens of thousands of tests that are done monthly at the ipv6-test.com connection test page, and are updated on a monthly basis.

Overall IPv6 and v4 protocol support

The graph below 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.

Overall IPv6 and v4 protocol support

Top 25 countries for IPv6 support (Apr 2013)

  Country Test count IPv4 IPv4 % IPv6 IPv6 %
1. Liechtenstein1212100.0%1191.7%
2. Slovenia51650898.4%38975.4%
3. United States73,57859,01380.2%51,49470.0%
4. Pakistan31931398.1%19661.4%
5. Macedonia13913899.3%8460.4%
6. Hong Kong1,00898697.8%56856.3%
7. Canada3,2303,03293.9%1,80755.9%
8. Japan7,3497,25298.7%4,07955.5%
9. Haiti1111100.0%654.5%
10. Taiwan2,8222,75897.7%1,52954.2%
11. Norway85384298.7%45553.3%
12. Nepal1717100.0%952.9%
13. Germany12,22811,88097.2%6,35051.9%
14. Netherlands5,8265,65097.0%3,01051.7%
15. Switzerland2,3632,30497.5%1,20150.8%
16. Monaco1212100.0%650.0%
17. Portugal86180393.3%42749.6%
18. Viet Nam44741392.4%21949.0%
19. New Zealand45845198.5%22448.9%
20. Belgium1,5991,57398.4%76247.7%
21. Greece64764199.1%30647.3%
22. China3,5993,48696.9%1,69247.0%
23. Moldova177177100.0%8346.9%
24. Bahrain1515100.0%746.7%
25. United Kingdom4,4834,42598.7%2,08846.6%

IPv6 and v4 protocol support (unique addresses)

The graph below 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.

IPv6 and v4 protocol support (unique addresses)

Top 25 countries for IPv6 support (unique addresses, Apr 2013)

  Country Test count IPv4 IPv4 % IPv6 IPv6 %
1. Slovenia51611530.9%25769.1%
2. Macedonia1393037.5%5062.5%
3. Norway85322647.8%24752.2%
4. Switzerland2,36368149.2%70350.8%
5. Netherlands5,8261,60350.2%1,58849.8%
6. United States73,57818,14051.3%17,21148.7%
7. Taiwan2,8221,10554.7%91645.3%
8. New Zealand45818954.9%15545.1%
9. Japan7,3493,22355.5%2,58144.5%
10. Spain2,16762655.5%50144.5%
11. Pakistan3197956.0%6244.0%
12. Hong Kong1,00829756.0%23344.0%
13. Belgium1,59959056.1%46143.9%
14. France5,8422,12556.3%1,64943.7%
15. Canada3,2301,48657.0%1,11943.0%
16. Bahrain15457.1%342.9%
17. Portugal86135959.6%24340.4%
18. Liechtenstein12660.0%440.0%
19. Moldova1777060.3%4639.7%
20. China3,5991,67060.7%1,08239.3%
21. Ukraine2,05677960.9%50139.1%
22. Cambodia17562.5%337.5%
23. Malaysia1,00542162.6%25237.4%
24. United Kingdom4,4831,79662.6%1,07237.4%
25. South Korea1,3519962.7%5937.3%

Default browser protocol

The graph below 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 red bars will grow taller than the blue ones.

Default browser protocol

Top 25 countries for IPv6 default (Apr 2013)

  Country Test count IPv4 IPv4 % IPv6 IPv6 %
1. Liechtenstein12216.7%1083.3%
2. Slovenia51617433.7%34266.3%
3. United States73,57827,80137.8%45,77762.2%
4. Macedonia1396647.5%7352.5%
5. Pakistan31915949.8%16050.2%
6. Japan7,3494,18757.0%3,16243.0%
7. Portugal86150859.0%35341.0%
8. Bahrain15960.0%640.0%
9. Netherlands5,8263,67463.1%2,15236.9%
10. Taiwan2,8221,81064.1%1,01235.9%
11. Nepal171164.7%635.3%
12. Viet Nam44729064.9%15735.1%
13. China3,5992,37766.0%1,22234.0%
14. Canada3,2302,13666.1%1,09433.9%
15. Belgium1,5991,05966.2%54033.8%
16. Greece64742966.3%21833.7%
17. United Kingdom4,4832,97966.5%1,50433.5%
18. Iceland453066.7%1533.3%
19. Montenegro12866.7%433.3%
20. France5,8423,89566.7%1,94733.3%
21. Germany12,2288,27767.7%3,95132.3%
22. Switzerland2,3631,60367.8%76032.2%
23. Panama251768.0%832.0%
24. New Zealand45831368.3%14531.7%
25. Mexico39827268.3%12631.7%

Default browser protocol (dual-stack users)

The graph below 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.

Default browser protocol (dual-stack users)

Top 25 countries for IPv6 default (dual-stack users, Apr 2013)

  Country Test count IPv4 IPv4 % IPv6 IPv6 %
1. Peru100.0%1100.0%
2. Iran400.0%4100.0%
3. Ecuador500.0%5100.0%
4. Faroe Islands100.0%1100.0%
5. Qatar1417.1%1392.9%
6. Liechtenstein1119.1%1090.9%
7. Colombia19210.5%1789.5%
8. Iceland17211.8%1588.2%
9. Slovenia3814712.3%33487.7%
10. Macedonia831113.3%7286.7%
11. Cyprus7114.3%685.7%
12. Bahrain7114.3%685.7%
13. United States36,9295,37014.5%31,55985.5%
14. Pakistan1903618.9%15481.1%
15. Montenegro5120.0%480.0%
16. Philippines982121.4%7778.6%
17. Romania1,03622421.6%81278.4%
18. Portugal3698021.7%28978.3%
19. Japan3,98292423.2%3,05876.8%
20. El Salvador8225.0%675.0%
21. Bosnia And Herzegovina4125.0%375.0%
22. Panama11327.3%872.7%
23. United Kingdom2,03059129.1%1,43970.9%
24. Belgium73621729.5%51970.5%
25. Greece3008929.7%21170.3%

IPv6 address types

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.

IPv6 address types

Top 25 countries for native IPv6 support (Apr 2013)

  Country Test count Native Native % 6to4 6to4 % Teredo Teredo %
1. Oman22100.0%00.0%00.0%
2. Colombia1919100.0%00.0%00.0%
3. Cyprus77100.0%00.0%00.0%
4. Faroe Islands11100.0%00.0%00.0%
5. Iran44100.0%00.0%00.0%
6. Lithuania1717100.0%00.0%00.0%
7. Liechtenstein1111100.0%00.0%00.0%
8. Bahrain77100.0%00.0%00.0%
9. Peru11100.0%00.0%00.0%
10. Armenia55100.0%00.0%00.0%
11. Bosnia And Herzegovina44100.0%00.0%00.0%
12. Iceland1717100.0%00.0%00.0%
13. Costa Rica33100.0%00.0%00.0%
14. Qatar1616100.0%00.0%00.0%
15. Grenada33100.0%00.0%00.0%
16. Ecuador99100.0%00.0%00.0%
17. Pakistan19619499.0%10.5%10.5%
18. Portugal42742098.4%10.2%61.4%
19. Viet Nam21921598.2%00.0%41.8%
20. Luxembourg474697.9%00.0%12.1%
21. Mexico17817397.2%21.1%31.7%
22. Japan4,0793,95597.0%711.7%531.3%
23. United States51,49449,77596.7%1,4962.9%2230.4%
24. Singapore47245496.2%132.8%51.1%
25. Greece30629395.8%72.3%62.0%

Downstream bandwidth

This one 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.

Downstream bandwidth

Top 25 countries for IPv6 speed (Apr 2013)

  Country IPv4 average IPv6 average IPv6 / IPv4 ratio
1. Bosnia And Herzegovina1.9 Mbps12.0 Mbps628.1%
2. Lebanon0.5 Mbps1.3 Mbps244.9%
3. Brazil6.8 Mbps10.1 Mbps147.1%
4. Austria17.4 Mbps23.1 Mbps132.5%
5. Japan6.1 Mbps7.7 Mbps126.9%
6. China1.7 Mbps2.1 Mbps122.9%
7. Tunisia1.5 Mbps1.7 Mbps114.0%
8. India6.0 Mbps6.7 Mbps110.4%
9. Malaysia5.4 Mbps6.0 Mbps110.3%
10. Greece11.3 Mbps12.3 Mbps108.8%
11. Denmark19.0 Mbps20.2 Mbps106.3%
12. Montenegro0.5 Mbps0.5 Mbps103.4%
13. Hungary17.0 Mbps17.2 Mbps101.4%
14. Luxembourg9.5 Mbps9.5 Mbps99.8%
15. Liechtenstein26.5 Mbps26.2 Mbps98.9%
16. United Arab Emirates0.5 Mbps0.5 Mbps95.6%
17. Uganda0.4 Mbps0.4 Mbps95.5%
18. Nigeria3.0 Mbps2.8 Mbps95.1%
19. Philippines1.2 Mbps1.1 Mbps93.8%
20. Netherlands19.8 Mbps18.5 Mbps93.6%
21. Norway26.6 Mbps24.2 Mbps91.2%
22. Switzerland18.7 Mbps16.7 Mbps89.7%
23. France10.0 Mbps8.9 Mbps89.3%
24. South Korea4.5 Mbps4.1 Mbps89.3%
25. Israel14.9 Mbps13.3 Mbps88.7%

Country level statistics