{"domain":"cdu.de","result":true,"measuredAt":"2026-11-15T15:52:15.215Z","receiptId":"leK0O-Y2yc","answer":{"kind":"host","input":"cdu.de","report":{"host":"cdu.de","checkedAt":"2026-11-15T15:52:15.015Z","a":{"status":"found","values":["193.219.105.10"],"ttl":600,"via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only","www":{"host":"www.cdu.de","a":{"status":"found","values":["193.219.105.10"],"ttl":600,"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":"cdu.de has no AAAA record."},{"key":"www","label":"www over IPv6","status":"fail","detail":"www.cdu.de has no AAAA record."},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"fail","detail":"None of the mail servers has an AAAA record.","hosts":[{"host":"mail48.cdu.de","ipv6":false}]},{"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":"ns1.cdu.de","ipv6":false},{"host":"ns1.arcor-ip.de","ipv6":true},{"host":"ns2.arcor-ip.de","ipv6":true},{"host":"ns3.arcor-ip.de","ipv6":true}]}]}},"states":[{"firstSeen":"2026-11-15T15:52:15.215Z","lastConfirmed":"2026-11-15T15:52:15.215Z","checks":1,"verdict":"ipv4-only","grade":"D","web":"fail","www":"fail","mail":"fail","dns":"pass","secondLook":null}]}