{"kind":"host","input":"aliyun.com","report":{"host":"aliyun.com","checkedAt":"2026-10-31T06:46:43.182Z","a":{"status":"found","values":["106.11.253.83","106.11.248.146","106.11.172.9","140.205.162.2","140.205.162.5","140.205.60.46"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2401:b180:1:60::6","2401:b180:1:60::5"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.aliyun.com","a":{"status":"found","values":["47.88.198.69","47.74.138.66","47.88.251.189","47.88.128.4","47.88.198.68"],"ttl":30,"via":"Cloudflare","cname":["www-jp-de-intl-adns.aliyun.com","www-jp-de-intl-adns.aliyun.com.gds.alibabadns.com","xjp.wagbridge.aliyun.aliyun.com","xjp-adns.aliyun.com.vipgds.alibabadns.com"]},"aaaa":{"status":"absent","via":"Cloudflare","cname":["www-jp-de-intl-adns.aliyun.com","www-jp-de-intl-adns.aliyun.com.gds.alibabadns.com","xjp.wagbridge.aliyun.aliyun.com","xjp-adns.aliyun.com.vipgds.alibabadns.com"]},"verdict":"ipv4-only"}},"readiness":{"grade":"C","summary":"Works over IPv6, with gaps: www doesn't fully work over IPv6; its mail servers lack IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"pass","detail":"aliyun.com has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2401:b180:1:60::6","result":"answers","port":443},{"address":"2401:b180:1:60::5","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"fail","detail":"www.aliyun.com has no AAAA record."},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"fail","detail":"None of the mail servers has an AAAA record.","hosts":[{"host":"mx2.mail.aliyun.com","ipv6":false}]},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"3 of 3 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"ns5.aliyun.com","ipv6":true},{"host":"ns4.aliyun.com","ipv6":true},{"host":"ns3.aliyun.com","ipv6":true}]}]},"https":{"status":"fail","problem":"redirect-no-ipv6","summary":"Redirects to www.aliyun.com, which has no IPv6 address — so IPv6 visitors end up needing IPv4 after all.","hops":[{"url":"https://aliyun.com/","address":"2401:b180:1:60::6","status":301,"tls":"valid"},{"url":"https://www.aliyun.com/","note":"redirects to www.aliyun.com, which has no IPv6 address"}]},"receiptId":"3n-gzzuJx2"}