{"kind":"host","input":"docker.io","report":{"host":"docker.io","checkedAt":"2026-10-31T22:25:32.795Z","a":{"status":"found","values":["32.200.67.23","54.163.166.73","32.193.181.249"],"ttl":45,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2600:1f18:2148:bc01:8ace:b487:fcc3:4aa9","2600:1f18:2148:bc00:eb39:1baf:a9b:8d58","2600:1f18:2148:bc02:dd71:3e03:179:5785"],"ttl":22,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.docker.io","a":{"status":"found","values":["32.193.181.249","54.163.166.73","32.200.67.23"],"ttl":60,"via":"Cloudflare","cname":["elb-io.us-east-1.aws.dckr.io"]},"aaaa":{"status":"found","values":["2600:1f18:2148:bc00:eb39:1baf:a9b:8d58","2600:1f18:2148:bc02:dd71:3e03:179:5785","2600:1f18:2148:bc01:8ace:b487:fcc3:4aa9"],"ttl":60,"via":"Cloudflare","cname":["elb-io.us-east-1.aws.dckr.io"]},"verdict":"dual-stack"}},"readiness":{"grade":"A","summary":"Website, mail and DNS all work over IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"pass","detail":"docker.io has 3 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2600:1f18:2148:bc01:8ace:b487:fcc3:4aa9","result":"answers","port":443},{"address":"2600:1f18:2148:bc00:eb39:1baf:a9b:8d58","result":"answers","port":443},{"address":"2600:1f18:2148:bc02:dd71:3e03:179:5785","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.docker.io has 3 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2600:1f18:2148:bc00:eb39:1baf:a9b:8d58","result":"answers","port":443},{"address":"2600:1f18:2148:bc02:dd71:3e03:179:5785","result":"answers","port":443},{"address":"2600:1f18:2148:bc01:8ace:b487:fcc3:4aa9","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"aspmx.l.google.com","ipv6":true},{"host":"alt1.aspmx.l.google.com","ipv6":true},{"host":"aspmx2.googlemail.com","ipv6":true},{"host":"aspmx3.googlemail.com","ipv6":true},{"host":"aspmx4.googlemail.com","ipv6":true},{"host":"aspmx5.googlemail.com","ipv6":true}]},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"ns-1168.awsdns-18.org","ipv6":true},{"host":"ns-1827.awsdns-36.co.uk","ipv6":true},{"host":"ns-421.awsdns-52.com","ipv6":true},{"host":"ns-513.awsdns-00.net","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://docker.io/","address":"2600:1f18:2148:bc01:8ace:b487:fcc3:4aa9","status":302,"tls":"valid"},{"url":"https://www.docker.com/","address":"2620:12a:8000::4","status":200,"tls":"valid"}]},"receiptId":"ss-9q_ysOv","reused":true,"measuredAt":"2026-10-31T22:25:32.848Z"}