{"kind":"host","input":"official-support-jp.com","report":{"host":"official-support-jp.com","checkedAt":"2026-11-12T18:33:23.774Z","a":{"status":"found","values":["163.44.176.17"],"ttl":3600,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2400:8500:1301:162::17:1"],"ttl":3600,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.official-support-jp.com","a":{"status":"found","values":["163.44.176.17"],"ttl":3600,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2400:8500:1301:162::17:1"],"ttl":3600,"via":"Cloudflare","cname":[]},"verdict":"dual-stack"}},"readiness":{"grade":"B","summary":"Works over IPv6, with one gap: its nameservers lack IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"pass","detail":"official-support-jp.com has an AAAA record and answers on it.","addresses":[{"address":"2400:8500:1301:162::17:1","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.official-support-jp.com has an AAAA record and answers on it.","addresses":[{"address":"2400:8500:1301:162::17:1","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"official-support-jp.com","ipv6":true}]},{"key":"dns","label":"Nameservers have IPv6","status":"fail","detail":"No nameserver has an AAAA record — an IPv6-only resolver can't reach this domain's DNS.","hosts":[{"host":"ns1.value-domain.com","ipv6":false},{"host":"ns2.value-domain.com","ipv6":false}]}]},"https":{"status":"fail","problem":"certificate","summary":"The certificate served over IPv6 at 2400:8500:1301:162::17:1 isn't valid for official-support-jp.com: ERR_TLS_CERT_ALTNAME_INVALID.","hops":[{"url":"https://official-support-jp.com/","address":"2400:8500:1301:162::17:1","tls":"ERR_TLS_CERT_ALTNAME_INVALID"}]},"receiptId":"UwZeEvbJgk","reused":true,"measuredAt":"2026-11-12T18:33:24.263Z"}