{"kind":"host","input":"clevelandclinic.org","report":{"host":"clevelandclinic.org","checkedAt":"2026-10-31T23:31:51.865Z","a":{"status":"found","values":["104.18.32.216","172.64.155.40"],"ttl":141,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:4407::6812:20d8","2a06:98c1:3103::ac40:9b28"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.clevelandclinic.org","a":{"status":"found","values":["172.64.150.59","104.18.37.197"],"ttl":86,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2a06:98c1:3101::6812:25c5","2606:4700:4406::ac40:963b"],"ttl":106,"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":"clevelandclinic.org has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:4407::6812:20d8","result":"answers","port":443},{"address":"2a06:98c1:3103::ac40:9b28","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.clevelandclinic.org has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2a06:98c1:3101::6812:25c5","result":"answers","port":443},{"address":"2606:4700:4406::ac40:963b","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":"us-smtp-inbound-1.mimecast.com","ipv6":false},{"host":"us-smtp-inbound-2.mimecast.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":"bob.ns.cloudflare.com","ipv6":true},{"host":"etta.ns.cloudflare.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 2 redirects: HTTP 200.","hops":[{"url":"https://clevelandclinic.org/","address":"2606:4700:4407::6812:20d8","status":302,"tls":"valid"},{"url":"https://www.clevelandclinic.org/","address":"2a06:98c1:3101::6812:25c5","status":302,"tls":"valid"},{"url":"https://my.clevelandclinic.org/","address":"2a06:98c1:3103::ac40:9b28","status":200,"tls":"valid"}]},"receiptId":"gOA2nTSYBS","reused":true,"measuredAt":"2026-10-31T23:31:52.102Z"}