{"kind":"host","input":"georgetown.edu","report":{"host":"georgetown.edu","checkedAt":"2026-11-02T18:38:34.697Z","a":{"status":"found","values":["23.185.0.2"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2620:12a:8000::2","2620:12a:8001::2"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.georgetown.edu","a":{"status":"found","values":["23.185.0.2"],"ttl":32,"via":"Cloudflare","cname":["pantheon2.uis.georgetown.edu"]},"aaaa":{"status":"found","values":["2620:12a:8001::2","2620:12a:8000::2"],"ttl":300,"via":"Cloudflare","cname":["pantheon2.uis.georgetown.edu"]},"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":"georgetown.edu has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2620:12a:8000::2","result":"answers","port":443},{"address":"2620:12a:8001::2","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.georgetown.edu has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2620:12a:8001::2","result":"answers","port":443},{"address":"2620:12a:8000::2","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":"usb-smtp-inbound-2.mimecast.com","ipv6":false},{"host":"usb-smtp-inbound-1.mimecast.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":"ns6.georgetown.edu","ipv6":false},{"host":"ns4.georgetown.edu","ipv6":false},{"host":"ns5.georgetown.edu","ipv6":false}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://georgetown.edu/","address":"2620:12a:8000::2","status":301,"tls":"valid"},{"url":"https://www.georgetown.edu/","address":"2620:12a:8001::2","status":200,"tls":"valid"}]},"receiptId":"cEXKOSZyqV","reused":true,"measuredAt":"2026-11-02T18:38:34.768Z"}