{"kind":"host","input":"pozarne-bezpecnostni-reseni-staveb.online","report":{"host":"pozarne-bezpecnostni-reseni-staveb.online","checkedAt":"2026-11-02T06:47:42.332Z","a":{"status":"found","values":["37.9.175.163"],"ttl":600,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2a00:4b40:aaaa:2005::6"],"ttl":600,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.pozarne-bezpecnostni-reseni-staveb.online","a":{"status":"found","values":["37.9.175.163"],"ttl":600,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2a00:4b40:aaaa:2005::6"],"ttl":600,"via":"Cloudflare","cname":[]},"verdict":"dual-stack"}},"readiness":{"grade":"A","summary":"Website, mail and DNS all work over IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"pass","detail":"pozarne-bezpecnostni-reseni-staveb.online has an AAAA record and answers on it.","addresses":[{"address":"2a00:4b40:aaaa:2005::6","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.pozarne-bezpecnostni-reseni-staveb.online has an AAAA record and answers on it.","addresses":[{"address":"2a00:4b40:aaaa:2005::6","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"mx10.active24.cz","ipv6":true},{"host":"mx20.active24.cz","ipv6":true}]},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"3 of 3 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"ns1.websupport.cz","ipv6":true},{"host":"ns2.websupport.cz","ipv6":true},{"host":"ns3.websupport.eu","ipv6":true}]}]},"https":{"status":"fail","problem":"certificate","summary":"The certificate served over IPv6 at 2a00:4b40:aaaa:2005::6 isn't valid for pozarne-bezpecnostni-reseni-staveb.online: ERR_TLS_CERT_ALTNAME_INVALID.","hops":[{"url":"https://pozarne-bezpecnostni-reseni-staveb.online/","address":"2a00:4b40:aaaa:2005::6","tls":"ERR_TLS_CERT_ALTNAME_INVALID"}]},"receiptId":"2sJWgpzGXb","reused":true,"measuredAt":"2026-11-02T06:47:42.880Z"}