{"kind":"host","input":"cmu.edu","report":{"host":"cmu.edu","checkedAt":"2026-10-31T11:08:48.262Z","a":{"status":"found","values":["128.2.42.10"],"ttl":13719,"via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only","www":{"host":"www.cmu.edu","a":{"status":"found","values":["128.2.42.52"],"ttl":60,"via":"Cloudflare","cname":["WWW.R53.cmu.edu"]},"aaaa":{"status":"absent","via":"Cloudflare","cname":["WWW.R53.cmu.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":"cmu.edu has no AAAA record."},{"key":"www","label":"www over IPv6","status":"fail","detail":"www.cmu.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":"aspmx.l.google.com","ipv6":true},{"host":"alt1.aspmx.l.google.com","ipv6":true},{"host":"alt2.aspmx.l.google.com","ipv6":true},{"host":"alt3.aspmx.l.google.com","ipv6":true},{"host":"alt4.aspmx.l.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":"nsauth1.net.cmu.edu","ipv6":false},{"host":"nsauth2.net.cmu.edu","ipv6":false},{"host":"nsauth3.net.cmu.edu","ipv6":false}]}]},"receiptId":"1gppIaL4H5"}