{"kind":"host","input":"chat.blesk.cz","report":{"host":"chat.blesk.cz","checkedAt":"2026-11-05T16:55:52.737Z","a":{"status":"found","values":["91.235.52.165"],"ttl":3600,"via":"Cloudflare","cname":["blesk.cz"]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only"},"readiness":{"grade":"D","summary":"The website has no IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"fail","detail":"chat.blesk.cz has no AAAA record."},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"partial","detail":"At least one mail server has no AAAA record (5 of 7 checked do).","hosts":[{"host":"aspmx.l.google.com","ipv6":true},{"host":"onlinedev.cncenter.cz","ipv6":false},{"host":"onlineweb.cncenter.cz","ipv6":false},{"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":"josephine.ns.cloudflare.com","ipv6":true},{"host":"rick.ns.cloudflare.com","ipv6":true}]}]},"receiptId":"pdu1ZvG0CZ","reused":true,"measuredAt":"2026-11-05T16:55:52.875Z"}