{"kind":"host","input":"weillcornell.org","report":{"host":"weillcornell.org","checkedAt":"2026-11-15T15:55:06.014Z","a":{"status":"found","values":["23.185.0.4"],"ttl":85432,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2620:12a:8001::4","2620:12a:8000::4"],"ttl":85391,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.weillcornell.org","a":{"status":"found","values":["23.185.0.4"],"ttl":300,"via":"Cloudflare","cname":["live-wcmc-pops.pantheonsite.io","fe4.edge.pantheon.io"]},"aaaa":{"status":"found","values":["2620:12a:8001::4","2620:12a:8000::4"],"ttl":300,"via":"Cloudflare","cname":["live-wcmc-pops.pantheonsite.io","fe4.edge.pantheon.io"]},"verdict":"dual-stack"}},"readiness":{"grade":"C","summary":"Works over IPv6, with gaps: its mail servers lack IPv6; its nameservers lack IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"pass","detail":"weillcornell.org has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2620:12a:8001::4","result":"answers","port":443},{"address":"2620:12a:8000::4","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.weillcornell.org has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2620:12a:8001::4","result":"answers","port":443},{"address":"2620:12a:8000::4","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":"inbound-smtp.us-east-1.amazonaws.com","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":"lex-iblxext1.med.cornell.edu","ipv6":false},{"host":"york-iblxext1.med.cornell.edu","ipv6":false},{"host":"azr-iblxext1.med.cornell.edu","ipv6":false}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate: HTTP 200.","hops":[{"url":"https://weillcornell.org/","address":"2620:12a:8001::4","status":200,"tls":"valid"}]},"receiptId":"To0RlKYRV4","reused":true,"measuredAt":"2026-11-15T15:55:06.080Z"}