{"kind":"host","input":"americanexpressconcierge.net","report":{"host":"americanexpressconcierge.net","checkedAt":"2026-10-31T09:18:24.406Z","a":{"status":"found","values":["74.208.236.184"],"ttl":3600,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2607:f1c0:100f:f000::2b9"],"ttl":3600,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.americanexpressconcierge.net","a":{"status":"found","values":["74.208.236.184"],"ttl":3600,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2607:f1c0:100f:f000::2b9"],"ttl":3600,"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":"americanexpressconcierge.net has an AAAA record and answers on it.","addresses":[{"address":"2607:f1c0:100f:f000::2b9","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.americanexpressconcierge.net has an AAAA record and answers on it.","addresses":[{"address":"2607:f1c0:100f:f000::2b9","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":"mx00.ionos.com","ipv6":false},{"host":"mx01.ionos.com","ipv6":false}]},{"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":"ns1024.ui-dns.de","ipv6":true},{"host":"ns1039.ui-dns.org","ipv6":true},{"host":"ns1061.ui-dns.biz","ipv6":true},{"host":"ns1106.ui-dns.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate: HTTP 200.","hops":[{"url":"https://americanexpressconcierge.net/","address":"2607:f1c0:100f:f000::2b9","status":200,"tls":"valid"}]},"receiptId":"TggenwQSDI"}