{"kind":"host","input":"kupi.cz","report":{"host":"kupi.cz","checkedAt":"2026-11-15T15:50:18.142Z","a":{"status":"found","values":["217.16.189.230"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only","www":{"host":"www.kupi.cz","a":{"status":"found","values":["104.26.10.94","104.26.11.94","172.67.70.35"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:20::681a:a5e","2606:4700:20::681a:b5e","2606:4700:20::ac43:4623"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack"}},"readiness":{"grade":"D","summary":"The website has no IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"fail","detail":"kupi.cz has no AAAA record."},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.kupi.cz has 3 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:20::681a:a5e","result":"answers","port":443},{"address":"2606:4700:20::681a:b5e","result":"answers","port":443},{"address":"2606:4700:20::ac43:4623","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"aspmx.l.google.com","ipv6":true},{"host":"alt1.aspmx.l.google.com","ipv6":true},{"host":"alt2.aspmx.l.google.com","ipv6":true},{"host":"aspmx2.googlemail.com","ipv6":true},{"host":"aspmx3.googlemail.com","ipv6":true}]},{"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":"curt.ns.cloudflare.com","ipv6":true},{"host":"nicole.ns.cloudflare.com","ipv6":true}]}]},"receiptId":"oIyZKZtKbf","reused":true,"measuredAt":"2026-11-15T15:50:18.154Z"}