{"kind":"host","input":"previewmaster.app","report":{"host":"previewmaster.app","checkedAt":"2026-11-14T16:04:09.213Z","a":{"status":"found","values":["104.21.67.132","172.67.176.231"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:3035::6815:4384","2606:4700:3035::ac43:b0e7"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.previewmaster.app","a":{"status":"found","values":["172.67.176.231","104.21.67.132"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:3035::6815:4384","2606:4700:3035::ac43:b0e7"],"ttl":300,"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":"previewmaster.app has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:3035::6815:4384","result":"answers","port":443},{"address":"2606:4700:3035::ac43:b0e7","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.previewmaster.app has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:3035::6815:4384","result":"answers","port":443},{"address":"2606:4700:3035::ac43:b0e7","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"route1.mx.cloudflare.net","ipv6":true},{"host":"route2.mx.cloudflare.net","ipv6":true},{"host":"route3.mx.cloudflare.net","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":"kianchau.ns.cloudflare.com","ipv6":true},{"host":"sneh.ns.cloudflare.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://previewmaster.app/","address":"2606:4700:3035::6815:4384","status":307,"tls":"valid"},{"url":"https://previewmaster.app/zh","address":"2606:4700:3035::6815:4384","status":200,"tls":"valid"}]},"receiptId":"QXY-u7UwWI","reused":true,"measuredAt":"2026-11-14T16:04:10.343Z"}