I question how one can have a top 100 website without an A record. I am inclined to believe there is a bug in there somewhere.
Owen On Nov 22, 2013, at 10:18 AM, Tony Hain <alh-i...@tndh.net> wrote: > Lee Howard wrote: > ... >>>>> There is obviously a long tail of ip4 destinations, but nearly all >>>>> of 500 of the Alexa global 500 have ip6 listeners, >>>> >>>> Do you have a data source for that? I see no indication of IPv6 >>>> listeners on 85% of the top sites. >>> >>> A slightly different metric, 44% of USA content available on IPv6: >>> >>> http://6lab.cisco.com/stats/ >> >> Right, weighted by DNS queries. >> Compare to http://www.vyncke.org/ipv6status/detailed.php?country=us >> and http://www.employees.org/~dwing/aaaa-stats/ >> >> Not equivalent to "nearly all of Alexa 500." > > Using a derivative of Dan Wings code from a couple of years back I get: > > The top 5 websites: AAAA records and IPv6 connectivity > count with A: 5 (100.000%) > count with AAAA: 4 ( 80.000%) > Of the 4 hosts with AAAA records, testing connectivity to TCP/80: > count with IPv6 ok: 4 (100.000%) > > The top 10 websites: AAAA records and IPv6 connectivity > count with A: 10 (100.000%) > count with AAAA: 6 ( 60.000%) > Of the 6 hosts with AAAA records, testing connectivity to TCP/80: > count with IPv6 ok: 6 (100.000%) > > The top 25 websites: AAAA records and IPv6 connectivity > count with A: 25 (100.000%) > count with AAAA: 10 ( 40.000%) > Of the 10 hosts with AAAA records, testing connectivity to TCP/80: > count with IPv6 ok: 10 (100.000%) > > The top 50 websites: AAAA records and IPv6 connectivity > count with A: 50 (100.000%) > count with AAAA: 21 ( 42.000%) > Of the 21 hosts with AAAA records, testing connectivity to TCP/80: > count with IPv6 ok: 21 (100.000%) > > The top 100 websites: AAAA records and IPv6 connectivity > count with A: 98 ( 98.000%) > count with AAAA: 30 ( 30.000%) > Of the 30 hosts with AAAA records, testing connectivity to TCP/80: > count with IPv6 ok: 30 (100.000%) > > The top 250 websites: AAAA records and IPv6 connectivity > count with A: 248 ( 99.200%) > count with AAAA: 56 ( 22.400%) > Of the 56 hosts with AAAA records, testing connectivity to TCP/80: > count with IPv6 ok: 56 (100.000%) > > The top 500 websites: AAAA records and IPv6 connectivity > count with A: 494 ( 98.800%) > count with AAAA: 91 ( 18.200%) > Of the 91 hosts with AAAA records, testing connectivity to TCP/80: > count with IPv6 ok: 91 (100.000%) > > The top 1000 websites: AAAA records and IPv6 connectivity > count with A: 990 ( 99.000%) > count with AAAA: 132 ( 13.200%) > Of the 132 hosts with AAAA records, testing connectivity to TCP/80: > count with IPv6 ok: 132 (100.000%) > > The top 2500 websites: AAAA records and IPv6 connectivity > count with A: 2479 ( 99.160%) > count with AAAA: 216 ( 8.640%) > Of the 216 hosts with AAAA records, testing connectivity to TCP/80: > count with IPv6 ok: 214 ( 99.074%) > > The top 5000 websites: AAAA records and IPv6 connectivity > count with A: 4959 ( 99.220%) > count with AAAA: 354 ( 7.083%) > Of the 354 hosts with AAAA records, testing connectivity to TCP/80: > count with IPv6 ok: 347 ( 98.023%) > > The top 10000 websites: AAAA records and IPv6 connectivity > count with A: 9918 ( 99.230%) > count with AAAA: 600 ( 6.003%) > Of the 600 hosts with AAAA records, testing connectivity to TCP/80: > count with IPv6 ok: 575 ( 95.833%) > > Original code developed by dw...@employees.org. > manual run by tony on arabian.tndh.net using ./IPv6-check . > on Fri Nov 22 09:48:17 PST 2013 (elapsed: 00:08:33, t: 15). > Top 10000 websites based on Alexa top-1m.csv. > >
