{"kind":"host","input":"dropbox.com","report":{"host":"dropbox.com","checkedAt":"2026-10-30T23:33:52.390Z","a":{"status":"found","values":["162.125.248.18"],"ttl":4,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2620:100:6040:18::a27d:f812"],"ttl":21,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.dropbox.com","a":{"status":"found","values":["162.125.6.18"],"ttl":2,"via":"Cloudflare","cname":["www-env.dropbox-dns.com"]},"aaaa":{"status":"found","values":["2620:100:601c:18::a27d:612"],"ttl":37,"via":"Cloudflare","cname":["www-env.dropbox-dns.com"]},"verdict":"dual-stack"}},"readiness":{"grade":"B","summary":"Works over IPv6, with one gap: its mail servers lack IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"pass","detail":"dropbox.com has an AAAA record and answers on it.","addresses":[{"address":"2620:100:6040:18::a27d:f812","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.dropbox.com has an AAAA record and answers on it.","addresses":[{"address":"2620:100:601c:18::a27d:612","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-001ed902.gslb.pphosted.com","ipv6":false},{"host":"mxb-001ed902.gslb.pphosted.com","ipv6":false}]},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"ns-1162.awsdns-17.org","ipv6":true},{"host":"ns-1949.awsdns-51.co.uk","ipv6":true},{"host":"ns-315.awsdns-39.com","ipv6":true},{"host":"ns-564.awsdns-06.net","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://dropbox.com/","address":"2620:100:6040:18::a27d:f812","status":301,"tls":"valid"},{"url":"https://www.dropbox.com/","address":"2620:100:601c:18::a27d:612","status":200,"tls":"valid"}]},"receiptId":"Dd4Z1P3iU3"}