{"kind":"host","input":"api.stesti.cz","report":{"host":"api.stesti.cz","checkedAt":"2026-11-15T10:05:55.771Z","a":{"status":"found","values":["81.0.236.170"],"ttl":300,"via":"Cloudflare","cname":[]},"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":"api.stesti.cz has no AAAA record."},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"fail","detail":"No MX records, so mail goes to the domain's own address (implicit MX). It has no AAAA record."},{"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":"brianna.ns.cloudflare.com","ipv6":true},{"host":"sid.ns.cloudflare.com","ipv6":true}]}]},"receiptId":"J5odVcRESr","reused":true,"measuredAt":"2026-11-15T10:05:56.107Z"}