{"kind":"host","input":"college-de-france.fr","report":{"host":"college-de-france.fr","checkedAt":"2026-10-31T23:31:34.018Z","a":{"status":"found","values":["193.52.22.121","193.52.22.122"],"ttl":21600,"via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only","www":{"host":"www.college-de-france.fr","a":{"status":"found","values":["37.19.207.38"],"ttl":32,"via":"Cloudflare","cname":["college-de-france.b-cdn.net"]},"aaaa":{"status":"found","values":["2400:52e0:1a04::925:1"],"ttl":35,"via":"Cloudflare","cname":["college-de-france.b-cdn.net"]},"verdict":"dual-stack"}},"readiness":{"grade":"D","summary":"The website has no IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"fail","detail":"college-de-france.fr has no AAAA record."},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.college-de-france.fr has an AAAA record and answers on it.","addresses":[{"address":"2400:52e0:1a04::925:1","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"fail","detail":"None of the mail servers has an AAAA record.","hosts":[{"host":"mxa.relay.renater.fr","ipv6":false},{"host":"mxc.relay.renater.fr","ipv6":false},{"host":"mxb.relay.renater.fr","ipv6":false},{"host":"mxd.relay.renater.fr","ipv6":false}]},{"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":"shiva.jussieu.fr","ipv6":false},{"host":"darsonval.college-de-france.fr","ipv6":false}]}]},"receiptId":"RLI7x5oy9s","reused":true,"measuredAt":"2026-10-31T23:31:34.366Z"}