{"kind":"host","input":"anthropic.com","report":{"host":"anthropic.com","checkedAt":"2026-10-30T20:04:33.630Z","a":{"status":"found","values":["160.79.104.10"],"ttl":197,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2607:6bc0::10"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.anthropic.com","a":{"status":"found","values":["160.79.104.10"],"ttl":21,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2607:6bc0::10"],"ttl":219,"via":"Cloudflare","cname":[]},"verdict":"dual-stack"}},"readiness":{"grade":"A","summary":"Website, mail and DNS all work over IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"pass","detail":"anthropic.com has an AAAA record and answers on it.","addresses":[{"address":"2607:6bc0::10","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.anthropic.com has an AAAA record and answers on it.","addresses":[{"address":"2607:6bc0::10","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"aspmx.l.google.com","ipv6":true},{"host":"alt3.aspmx.l.google.com","ipv6":true},{"host":"alt4.aspmx.l.google.com","ipv6":true},{"host":"alt1.aspmx.l.google.com","ipv6":true},{"host":"alt2.aspmx.l.google.com","ipv6":true}]},{"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":"isla.ns.cloudflare.com","ipv6":true},{"host":"randy.ns.cloudflare.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://anthropic.com/","address":"2607:6bc0::10","status":301,"tls":"valid"},{"url":"https://www.anthropic.com/","address":"2607:6bc0::10","status":200,"tls":"valid"}]},"receiptId":"5bTM2tA5JV","reused":true,"measuredAt":"2026-10-30T20:04:33.773Z"}