{"kind":"host","input":"mail.ucsd.edu","report":{"host":"mail.ucsd.edu","checkedAt":"2026-10-31T16:13:38.044Z","a":{"status":"found","values":["75.2.44.127","99.83.137.54"],"ttl":26062,"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":"mail.ucsd.edu 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":"inbound.ucsd.edu","ipv6":false}]},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"2 of 3 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"ns-auth2.ucsd.edu","ipv6":true},{"host":"ns-auth1.ucsd.edu","ipv6":false},{"host":"ns-auth3.ucsd.edu","ipv6":true}]}]},"receiptId":"j4HYssM1Jk"}