{"kind":"host","input":"duke.edu","report":{"host":"duke.edu","checkedAt":"2026-11-01T17:24:21.329Z","a":{"status":"found","values":["152.3.70.87","152.3.72.243"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only","www":{"host":"www.duke.edu","a":{"status":"found","values":["152.3.70.87"],"ttl":19,"via":"Cloudflare","cname":["www-duke.wip.duke.edu"]},"aaaa":{"status":"absent","via":"Cloudflare","cname":["www-duke.wip.duke.edu"]},"verdict":"ipv4-only"}},"readiness":{"grade":"D","summary":"The website has no IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"fail","detail":"duke.edu has no AAAA record."},{"key":"www","label":"www over IPv6","status":"fail","detail":"www.duke.edu has no AAAA record."},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"duke-edu.mail.protection.outlook.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":"dns-auth-02.oit.duke.edu","ipv6":false},{"host":"dns-nc1-01.oit.duke.edu","ipv6":false},{"host":"dns-auth-01.oit.duke.edu","ipv6":false}]}]},"receiptId":"KlYTcEeRnn","reused":true,"measuredAt":"2026-11-01T17:24:21.400Z"}