IPv6 in United StatesThese graphs show the evolution of default protocol, v6 address types, and average bandwidth in United States 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. | Comcast Cable Communications, LLC | 7,432 |
| 2. | Spectrum | 6,007 |
| 3. | AT&T Services, Inc. | 3,110 |
| 4. | Cellco Partnership DBA Verizon Wireless | 2,604 |
| 5. | Hurricane Electric LLC | 2,386 |
| 6. | Cox Communications Inc. | 1,428 |
| 7. | Cloudflarewarp | 826 |
| 8. | Google LLC | 612 |
| 9. | CenturyLink Communications, LLC | 597 |
| 10. | T-Mobile USA, Inc. | 528 |
| 11. | AT&T Mobility LLC | 442 |
| 12. | Mediacom Communications Corp | 295 |
| 13. | Sprint | 277 |
| 14. | Google Fiber Inc. | 270 |
| 15. | Choopa | 265 |
| 16. | Frontier Communications Solutions | 152 |
| 17. | NetSource Communications | 147 |
| 18. | American Registry Internet Numbers | 146 |
| 19. | Condointernet.net | 114 |
| 20. | Internet Assigned Numbers Authority | 111 |
| 21. | Symantec Corporation | 104 |
| 22. | M247 Ltd | 88 |
| 23. | Sumofiber | 79 |
| 24. | Amazon Technologies Inc | 77 |
| 25. | Multacom Corporation | 76 |
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. | Comcast Cable Communications, LLC | 3,918 |
| 2. | Spectrum | 2,985 |
| 3. | Cellco Partnership DBA Verizon Wireless | 1,848 |
| 4. | AT&T Services, Inc. | 1,807 |
| 5. | Hurricane Electric LLC | 770 |
| 6. | Cox Communications Inc. | 747 |
| 7. | Cloudflarewarp | 455 |
| 8. | T-Mobile USA, Inc. | 358 |
| 9. | CenturyLink Communications, LLC | 304 |
| 10. | AT&T Mobility LLC | 294 |
| 11. | Mediacom Communications Corp | 193 |
| 12. | Google Fiber Inc. | 128 |
| 13. | Sprint | 99 |
| 14. | Choopa | 87 |
| 15. | Google LLC | 65 |
| 16. | Condointernet.net | 60 |
| 17. | Chinanet | 50 |
| 18. | American Registry Internet Numbers | 48 |
| 19. | M247 Ltd | 45 |
| 20. | Midcontinent Communications | 45 |
| 21. | Verizon Communications | 39 |
| 22. | Quintex Alliance Consulting | 34 |
| 23. | Frontier Communications Solutions | 33 |
| 24. | Webpass Inc. | 32 |
| 25. | Cogent Communications | 32 |
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. | University of California, San Diego | 5 | 0 | 0.0% | 5 | 100.0% |
| 2. | Hurricane Electric | 9 | 0 | 0.0% | 9 | 100.0% |
| 3. | Serveurcom SRL | 5 | 0 | 0.0% | 5 | 100.0% |
| 4. | Microsoft Corp | 16 | 0 | 0.0% | 16 | 100.0% |
| 5. | Nynex | 13 | 0 | 0.0% | 13 | 100.0% |
| 6. | iFog GmbH | 14 | 0 | 0.0% | 14 | 100.0% |
| 7. | 1&1 Internet Inc. (11INT | 10 | 0 | 0.0% | 10 | 100.0% |
| 8. | General Communication, Inc. | 8 | 0 | 0.0% | 8 | 100.0% |
| 9. | Hancock Rural Telephone Corp. | 7 | 0 | 0.0% | 7 | 100.0% |
| 10. | Amazon.com, Inc. | 13 | 0 | 0.0% | 13 | 100.0% |
| 11. | Aureon Network Services | 9 | 0 | 0.0% | 9 | 100.0% |
| 12. | Ability Business | 7 | 0 | 0.0% | 7 | 100.0% |
| 13. | Wowrack.com | 15 | 0 | 0.0% | 15 | 100.0% |
| 14. | Cct Llc | 7 | 0 | 0.0% | 7 | 100.0% |
| 15. | Ovh Sas | 13 | 0 | 0.0% | 13 | 100.0% |
| 16. | Wells Fargo & Company | 6 | 0 | 0.0% | 6 | 100.0% |
| 17. | Qihoo | 10 | 0 | 0.0% | 10 | 100.0% |
| 18. | Internet Assigned Numbers Authority | 111 | 0 | 0.0% | 111 | 100.0% |
| 19. | xTom.com | 11 | 0 | 0.0% | 11 | 100.0% |
| 20. | Microsoft Corporation | 5 | 0 | 0.0% | 5 | 100.0% |
| 21. | ProXad network / Free | 5 | 0 | 0.0% | 5 | 100.0% |
| 22. | Sauk Valley Community College | 5 | 0 | 0.0% | 5 | 100.0% |
| 23. | Greenlight Networks | 9 | 0 | 0.0% | 9 | 100.0% |
| 24. | Lightspeed Communications | 7 | 0 | 0.0% | 7 | 100.0% |
| 25. | Central Virginia Services, INC | 8 | 0 | 0.0% | 8 | 100.0% |
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. | Sumofiber | 79 | 185.8 Mbps |
| 2. | Lightspeed Communications | 7 | 182.6 Mbps |
| 3. | Webpass Inc. | 52 | 160.3 Mbps |
| 4. | Cogent Communications | 56 | 144.0 Mbps |
| 5. | Cox Communications Inc. | 1,428 | 128.9 Mbps |
| 6. | Linode, LLC | 30 | 126.6 Mbps |
| 7. | Google Fiber Inc. | 270 | 126.4 Mbps |
| 8. | Condointernet.net | 114 | 124.8 Mbps |
| 9. | TeraSwitch Networks Inc. | 8 | 116.7 Mbps |
| 10. | PenTeleData Inc. | 11 | 116.6 Mbps |
| 11. | Cincinnati Bell Telephone Company LLC | 26 | 116.3 Mbps |
| 12. | CenturyLink Communications, LLC | 597 | 107.9 Mbps |
| 13. | Spectrum | 6,007 | 105.2 Mbps |
| 14. | Comcast Cable Communications, LLC | 7,432 | 102.4 Mbps |
| 15. | Monkey Brains | 48 | 100.3 Mbps |
| 16. | Choopa | 265 | 98.3 Mbps |
| 17. | ANEXIA Internetdienstleistungs GmbH | 5 | 93.8 Mbps |
| 18. | American Registry Internet Numbers | 146 | 88.9 Mbps |
| 19. | Mediacom Communications Corp | 295 | 88.7 Mbps |
| 20. | Bulloch County Rural Telephone Cooperative, Inc. | 5 | 87.7 Mbps |
| 21. | Mesh.Net | 8 | 85.0 Mbps |
| 22. | Verizon Communications | 74 | 84.6 Mbps |
| 23. | Clouds Network Limited | 12 | 78.4 Mbps |
| 24. | Midcontinent Communications | 71 | 69.0 Mbps |
| 25. | AT&T Services, Inc. | 3,110 | 67.6 Mbps |