{"kind":"host","input":"yahoo.com","report":{"host":"yahoo.com","checkedAt":"2026-10-30T21:15:10.679Z","a":{"status":"found","values":["74.6.143.26","74.6.231.20","74.6.231.21","74.6.143.25","98.137.11.164","98.137.11.163"],"ttl":915,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2001:4998:44:3507::8000","2001:4998:44:3507::8001","2001:4998:124:1507::f000","2001:4998:124:1507::f001","2001:4998:24:120d::1:0","2001:4998:24:120d::1:1"],"ttl":1761,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.yahoo.com","a":{"status":"found","values":["69.147.92.11","69.147.92.12"],"ttl":58,"via":"Cloudflare","cname":["me-ycpi-cf-www.g06.yahoodns.net"]},"aaaa":{"status":"found","values":["2001:4998:14:800::1001","2001:4998:14:800::1000"],"ttl":25,"via":"Cloudflare","cname":["me-ycpi-cf-www.g06.yahoodns.net"]},"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":"yahoo.com has 4 IPv6 addresses and answers on every one we tested (2 more not tested).","addresses":[{"address":"2001:4998:44:3507::8000","result":"answers","port":443},{"address":"2001:4998:44:3507::8001","result":"answers","port":443},{"address":"2001:4998:124:1507::f000","result":"answers","port":443},{"address":"2001:4998:124:1507::f001","result":"answers","port":443},{"address":"2001:4998:24:120d::1:0","result":"not tested"},{"address":"2001:4998:24:120d::1:1","result":"not tested"}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.yahoo.com has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2001:4998:14:800::1001","result":"answers","port":443},{"address":"2001:4998:14:800::1000","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":"mta7.am0.yahoodns.net","ipv6":false},{"host":"mta6.am0.yahoodns.net","ipv6":false},{"host":"mta5.am0.yahoodns.net","ipv6":false}]},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"4 of 5 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"ns2.yahoo.com","ipv6":true},{"host":"ns3.yahoo.com","ipv6":true},{"host":"ns5.yahoo.com","ipv6":true},{"host":"ns1.yahoo.com","ipv6":true},{"host":"ns4.yahoo.com","ipv6":false}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://yahoo.com/","address":"2001:4998:44:3507::8000","status":301,"tls":"valid"},{"url":"https://www.yahoo.com/","address":"2001:4998:14:800::1001","status":200,"tls":"valid"}]},"receiptId":"9gfRjnygO6"}