{"kind":"host","input":"benu.cz","report":{"host":"benu.cz","checkedAt":"2026-11-05T16:47:59.552Z","a":{"status":"found","values":["104.20.34.121","172.66.150.8"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:10::6814:2279","2606:4700:10::ac42:9608"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.benu.cz","a":{"status":"found","values":["104.20.34.121","172.66.150.8"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:10::6814:2279","2606:4700:10::ac42:9608"],"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":"benu.cz has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:10::6814:2279","result":"answers","port":443},{"address":"2606:4700:10::ac42:9608","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.benu.cz has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:10::6814:2279","result":"answers","port":443},{"address":"2606:4700:10::ac42:9608","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":"mail01.phoenixgroup.eu","ipv6":false},{"host":"mail02.phoenixgroup.eu","ipv6":false},{"host":"mail03.phoenixgroup.eu","ipv6":false},{"host":"mail04.phoenixgroup.eu","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":"hunts.ns.cloudflare.com","ipv6":true},{"host":"joyce.ns.cloudflare.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 403.","hops":[{"url":"https://benu.cz/","address":"2606:4700:10::6814:2279","status":307,"tls":"valid"},{"url":"https://www.benu.cz/","address":"2606:4700:10::6814:2279","status":403,"tls":"valid"}]},"receiptId":"iO3oErc46y","reused":true,"measuredAt":"2026-11-05T16:48:00.097Z"}