{"domain":"rcdalerts.com","result":true,"measuredAt":"2026-11-07T00:41:21.565Z","receiptId":"ndv6KRgGDZ","answer":{"kind":"host","input":"rcdalerts.com","report":{"host":"rcdalerts.com","checkedAt":"2026-11-07T00:41:21.499Z","a":{"status":"found","values":["74.208.236.157"],"ttl":3600,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2607:f1c0:100f:f000::200"],"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":"rcdalerts.com has an AAAA record and answers on it.","addresses":[{"address":"2607:f1c0:100f:f000::200","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":"mx01.ionos.com","ipv6":false},{"host":"mx00.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":"ns1017.ui-dns.biz","ipv6":true},{"host":"ns1065.ui-dns.com","ipv6":true},{"host":"ns1080.ui-dns.de","ipv6":true},{"host":"ns1071.ui-dns.org","ipv6":true}]}]},"https":{"status":"unknown","summary":"rcdalerts.com didn't complete an HTTPS request over IPv6 (ERR_SSL_TLSV1_ALERT_INTERNAL_ERROR).","hops":[{"url":"https://rcdalerts.com/","address":"2607:f1c0:100f:f000::200","note":"ERR_SSL_TLSV1_ALERT_INTERNAL_ERROR"}]}},"states":[{"firstSeen":"2026-11-07T00:41:15.165Z","lastConfirmed":"2026-11-07T00:41:21.565Z","checks":2,"verdict":"dual-stack","grade":"B","web":"pass","www":null,"mail":"fail","dns":"pass","secondLook":null}]}