{"kind":"host","input":"usaa-email-zone-security.com","report":{"host":"usaa-email-zone-security.com","checkedAt":"2026-11-10T23:52:39.074Z","a":{"status":"found","values":["172.67.140.49","104.21.40.238"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:3034::6815:28ee","2606:4700:3031::ac43:8c31"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.usaa-email-zone-security.com","a":{"status":"found","values":["104.21.40.238","172.67.140.49"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:3034::6815:28ee","2606:4700:3031::ac43:8c31"],"ttl":300,"via":"Cloudflare","cname":[]},"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":"usaa-email-zone-security.com has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:3034::6815:28ee","result":"answers","port":443},{"address":"2606:4700:3031::ac43:8c31","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.usaa-email-zone-security.com has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:3034::6815:28ee","result":"answers","port":443},{"address":"2606:4700:3031::ac43:8c31","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":"mx1.emailsrvr.com","ipv6":false},{"host":"mx2.emailsrvr.com","ipv6":false}]},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"anastasia.ns.cloudflare.com","ipv6":true},{"host":"drake.ns.cloudflare.com","ipv6":true}]}]},"https":{"status":"unknown","summary":"Answered over IPv6 with a server error (HTTP 520) — can't tell whether that's specific to IPv6.","hops":[{"url":"https://usaa-email-zone-security.com/","address":"2606:4700:3034::6815:28ee","status":520,"tls":"valid"}]},"receiptId":"KpWBBgUfLk","reused":true,"measuredAt":"2026-11-10T23:52:39.375Z"}