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Friday, 06 July 2012

How much of the web is IPv6 reachable?

Following the 2011 World IPv6 day, I published a post where I compared the Netcraft Top 100 Domains that returned AAAA records on World IPv6 day against the Netcraft Top 100 Domains that returned AAAA records about one month later. The number dropped from about 50% to, well, not nearly so many. One of my conclusions was that "It would be nice if more participants demonstrate a longer term commitment." Another was that "If there's a short list of priority issues to resolve for IPv6 deployment, engaging edge device manufacturers should be near the top."

World IPv6 "launch" day 2012 is come and gone. More ISPs, more edge devices, and a tad more traffic. But how much more? In light of the publicized rallying cry "This time it's for real!", and rather than repeat the same check, I decided to (literally) dig deeper to estimate how much of the web is IPv6 reachable.

On June 26, I downloaded Alexa's Top 1,000,000 web sites (csv), for no better reason than Alexa's data were freely available. Over the next week, I  batch processsed tens of thousands of queries of the form dig aaaa +noall +answer until I had queried 500,000 web sites.

As the graph of the distribution across the Top 500,000 web sites shows, IPv6 "adoption" is fairly consistent.

Alexaipv6

Other observations from these data:
  • 12% of the Top 1000 web sites have AAAA or CNAME records
  • 4.9% of the Top 500,000 web sites have AAAA or CNAME records
  • Of the 14097 AAAA records, 13337 are unique IPv6 addresses
  • The web site domains names span 207 Top Level Domains
  • COM, BR, IN, NET, and RU have the highest concentration of domain names that are IPv6 reachable n this sample.
 TLDs

So, assuming that 5% reachability is an improvement over 2011, is this satisfactory progess for IPv6 adoption? What do you think should be done to accelerate adoption, or are you happy to let market forces shape or decide?

Posted at 05:00 AM in Domain names and DNS |

Comments

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It's sad but better than last year. Can you give us a link to your post?

Posted by: The Security Skeptic | Sunday, 08 July 2012 at 10:05 AM

Greetings,

I read your article after it was tweeted by TeamArin. The statistics are sad. While I was setting up to do a related study about physical connectivity between ISPs and sites I found that just out of the top 25 Alexa sites only 12 are IPv6 enabled and of those 8 are google owned.

I wrote a bit about it on my personal site : The State of IPv6.

Posted by: Sonoble | Saturday, 07 July 2012 at 12:10 PM

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