{"kind":"host","input":"us-east-1-instance-amazon.com","report":{"host":"us-east-1-instance-amazon.com","checkedAt":"2026-11-01T14:55:33.433Z","a":{"status":"found","values":["172.67.189.186","104.21.65.95"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:3032::6815:415f","2606:4700:3032::ac43:bdba"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.us-east-1-instance-amazon.com","a":{"status":"found","values":["172.67.189.186","104.21.65.95"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:3032::6815:415f","2606:4700:3032::ac43:bdba"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack"}},"readiness":{"grade":"B","summary":"Works over IPv6, with one gap: its mail servers lack IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"pass","detail":"us-east-1-instance-amazon.com has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:3032::6815:415f","result":"answers","port":443},{"address":"2606:4700:3032::ac43:bdba","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.us-east-1-instance-amazon.com has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:3032::6815:415f","result":"answers","port":443},{"address":"2606:4700:3032::ac43:bdba","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"fail","detail":"None of the mail servers has an AAAA record.","hosts":[{"host":"_dc-mx.134e2d1f5548.us-east-1-instance-amazon.com","ipv6":false}]},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"lochlan.ns.cloudflare.com","ipv6":true},{"host":"paige.ns.cloudflare.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate: HTTP 404.","hops":[{"url":"https://us-east-1-instance-amazon.com/","address":"2606:4700:3032::6815:415f","status":404,"tls":"valid"}]},"receiptId":"R5OhGYYq58","reused":true,"measuredAt":"2026-11-01T14:55:34.738Z"}