That is quite interesting, but could really do with some information about what improvements are needed. Netflix is listed, but I've got no clue what they are expected to do to improve their v6 connectivity.
Netflix use Google for email, and Google are missing some reverse DNS on their IPv6 addresses. e.g. from Mythic I see $ dig aspmx3.googlemail.com aaaa +short 2404:6800:4003:c06::1a $ dig -x 2404:6800:4003:c06::1a +short $ from IDNet I see $ dig aspmx3.googlemail.com aaaa +short 2a00:1450:4010:c03::1a $ dig -x 2a00:1450:4010:c03::1a +short lr-in-x1a.1e100.net. $ dig lr-in-x1a.1e100.net aaaa +short 2a00:1450:4010:c03::1a The first fails our checker https://www.mythic-beasts.com/ipv6/health-check?domain=netflix.com&submit=#test-details-mailserver-reverse-dns so Netflix get 10/11. Pete -- Pete Stevens [email protected] http://www.ex-parrot.com/~pete/ https://www.mythic-beasts.com/ https://twitter.com/Mythic_Beasts
