{"kind":"host","input":"anthropic-finance.com","report":{"host":"anthropic-finance.com","checkedAt":"2026-11-12T07:46:25.934Z","a":{"status":"found","values":["192.236.237.160"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2a0d:7c40:3000:1415::2"],"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":"anthropic-finance.com has an AAAA record and answers on it.","addresses":[{"address":"2a0d:7c40:3000:1415::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":"mail.anthropic-finance.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":"dolly.ns.cloudflare.com","ipv6":true},{"host":"ken.ns.cloudflare.com","ipv6":true}]}]},"https":{"status":"fail","problem":"certificate","summary":"The certificate served over IPv6 at 2a0d:7c40:3000:1415::2 isn't valid for anthropic-finance.com: ERR_TLS_CERT_ALTNAME_INVALID.","hops":[{"url":"https://anthropic-finance.com/","address":"2a0d:7c40:3000:1415::2","tls":"ERR_TLS_CERT_ALTNAME_INVALID"}]},"receiptId":"xT6WW-2P0d","reused":true,"measuredAt":"2026-11-12T07:46:26.264Z"}