{"kind":"host","input":"dns.nethost.cz","report":{"host":"dns.nethost.cz","checkedAt":"2026-11-15T17:10:40.136Z","a":{"status":"found","values":["81.0.235.1"],"ttl":864,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2001:1528:132::60"],"ttl":864,"via":"Cloudflare","cname":[]},"verdict":"dual-stack"},"readiness":{"grade":"F","summary":"Publishes IPv6 but doesn't answer on it — worse than having none.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"broken","detail":"dns.nethost.cz has an AAAA record, but nothing answered on ports 443 or 80. IPv6 visitors wait for a timeout before falling back to IPv4.","addresses":[{"address":"2001:1528:132::60","result":"no answer"}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"No MX records, so mail goes to the domain's own address (implicit MX). It has an AAAA record."},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"3 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"dns.nethost.cz","ipv6":true},{"host":"pns.nethost.cz","ipv6":false},{"host":"sns.nethost.sk","ipv6":true},{"host":"tns.nethost.eu","ipv6":true}]}]},"receiptId":"1bPtvFz62n","reused":true,"measuredAt":"2026-11-15T17:10:46.139Z"}