This page was developed in order to provide metrics for global IPv6 deployment. These statistics are updated daily. Please send questions, comments, or bugs to mleber@he.net
The tools for this report were developed while working on a paper titled "Going Native" about Hurricane's experience of adding extensive native IPv6 peering as a result of a core router and backbone upgrade.
We can measure the percentage of networks running IPv6 by comparing the set of ASes in the IPv6 routing table to those in the combined set of IPv4 and IPv6.
IPv4 and IPv6 RIBs Last Parsed: Sat Jul 5 01:14:40 PDT 2008
ASes using IPv4 or IPv6: 28865
Percentage of ASes (IPv4 or IPv6) running IPv6: 3.5%
One amusing measure of IPv6 deployment to ask the question: What percentage of IPv6 reverse DNS servers are reachable via IPv6?
(ping tests and dns queries run from a server on Hurricane Electric's IPv4 and IPv6 backbone in Fremont, California.)
IPv6 rDNS Nameservers Last Polled: Sat Jul 5 01:31:50 PDT 2008
IPv6 rDNS Nameservers with an IPv4 address: 1338
IPv6 rDNS Nameservers with an IPv6 address: 492
IPv6 rDNS Nameservers reachable via IPv4 (ping or dns): 1139
IPv6 rDNS Nameservers reachable via IPv6 (ping or dns): 394
IPv6 rDNS Nameservers reachable via IPv4 or IPv6: 1180
IPv6 rDNS Nameservers reachable via IPv4 and IPv6: 353
Percentage reachable IPv6 rDNS Nameservers reachable via IPv6: 33.4%
Actually, the reason we looked at IPv6 reverse DNS servers was to get some hosts on both IPv6 and IPv4 so that we can compare IPv6 vs IPv4 latency.
IPv6 rDNS Nameservers where IPv6 is faster than IPv4 (by more than 1ms): 73
IPv6 rDNS Nameservers where IPv4 and IPv6 are the same speed (within 1ms): 23
IPv6 rDNS Nameservers where IPv4 is faster than IPv6 (by more than 1ms): 257
IPv6 rDNS nameservers where IPv6 is as fast or faster than IPv4 (within 1ms): 96
Percentage of IPv6 rDNS Nameservers where IPv6 is as fast or faster than IPv4 (within 1ms): 27.2%
A very quick way to measure IPv6 deployment for websites is just to check for a AAAA record in DNS.
Domains Last Polled: Sat Jul 5 01:15:44 PDT 2008
ipv6tf maintains a list of ISPs that offer IPv6. How many IPv6 ISPs have websites that support IPv6? (BTW, nobody listed is being picked on. Hurricane has lots of work to do too.)
ipv6tf.org ISP List websites with an IPv4 or IPv6 address: 206
ipv6tf.org ISP List websites with an IPv6 address: 67
Percentage of ipv6tf.org ISP List websites using IPv6: 32.5%
The Alexa Top 500 lists the most popular sites on the web.
Alexa Top 500 Last Parsed: Sat Jul 5 01:14:51 PDT 2008
Alexa Top 500 websites domains: 500
Alexa Top 500 websites listed with typos: 2
Alexa Top 500 websites with an IPv4 or IPv6 address: 498
Alexa Top 500 websites with an IPv6 address: 2
Percentage of Alexa Top 500 websites using IPv6: 0.4%