{"kind":"host","input":"duckdns.org","report":{"host":"duckdns.org","checkedAt":"2026-10-30T21:18:42.034Z","a":{"status":"found","values":["15.175.80.13"],"ttl":7,"via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only","www":{"host":"www.duckdns.org","a":{"status":"found","values":["16.55.25.219","16.54.6.89","15.175.80.13"],"ttl":51,"via":"Cloudflare","cname":["appservers-duckdns-prod-1630339571.ca-central-1.elb.amazonaws.com"]},"aaaa":{"status":"absent","via":"Cloudflare","cname":["appservers-duckdns-prod-1630339571.ca-central-1.elb.amazonaws.com"]},"verdict":"ipv4-only"}},"readiness":{"grade":"D","summary":"The website has no IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"fail","detail":"duckdns.org has no AAAA record."},{"key":"www","label":"www over IPv6","status":"fail","detail":"www.duckdns.org has no AAAA record."},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"smtp.google.com","ipv6":true}]},{"key":"dns","label":"Nameservers have IPv6","status":"fail","detail":"No nameserver has an AAAA record — an IPv6-only resolver can't reach this domain's DNS.","hosts":[{"host":"ns9.duckdns.org","ipv6":false},{"host":"ns1.duckdns.org","ipv6":false},{"host":"ns2.duckdns.org","ipv6":false},{"host":"ns3.duckdns.org","ipv6":false},{"host":"ns4.duckdns.org","ipv6":false},{"host":"ns5.duckdns.org","ipv6":false},{"host":"ns6.duckdns.org","ipv6":false},{"host":"ns7.duckdns.org","ipv6":false},{"host":"ns8.duckdns.org","ipv6":false}]}]},"receiptId":"EA4RN99TbQ"}