{"kind":"host","input":"ns2.univ-paris-diderot.fr","report":{"host":"ns2.univ-paris-diderot.fr","checkedAt":"2026-11-01T01:22:51.033Z","a":{"status":"found","values":["194.254.61.138"],"ttl":86400,"via":"Cloudflare","cname":["korolev.univ-paris7.fr"]},"aaaa":{"status":"found","values":["2001:660:3301:8000::1:2"],"ttl":86400,"via":"Cloudflare","cname":["korolev.univ-paris7.fr"]},"verdict":"dual-stack"},"readiness":{"grade":"F","summary":"Publishes IPv6 but doesn't answer on it — worse than having none.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"broken","detail":"ns2.univ-paris-diderot.fr has an AAAA record, but nothing answered on ports 443 or 80. IPv6 visitors wait for a timeout before falling back to IPv4.","addresses":[{"address":"2001:660:3301:8000::1:2","result":"no answer"}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"partial","detail":"At least one mail server has no AAAA record (2 of 3 checked do).","hosts":[{"host":"shiva.jussieu.fr","ipv6":false},{"host":"korolev.univ-paris7.fr","ipv6":true},{"host":"potemkin.univ-paris7.fr","ipv6":true}]},{"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":"potemkin.univ-paris7.fr","ipv6":true},{"host":"shiva.jussieu.fr","ipv6":false},{"host":"korolev.univ-paris7.fr","ipv6":true}]}]},"receiptId":"-FnTIMh8EM","reused":true,"measuredAt":"2026-11-01T01:22:57.038Z"}