{"kind":"host","input":"chance.cz","report":{"host":"chance.cz","checkedAt":"2026-11-15T15:46:03.565Z","a":{"status":"found","values":["172.64.147.137","104.18.40.119"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:440d::ac40:9389","2606:4700:440d::6812:2877"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.chance.cz","a":{"status":"found","values":["172.64.147.137","104.18.40.119"],"ttl":99,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:440d::6812:2877","2606:4700:440d::ac40:9389"],"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":"chance.cz has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:440d::ac40:9389","result":"answers","port":443},{"address":"2606:4700:440d::6812:2877","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.chance.cz has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:440d::6812:2877","result":"answers","port":443},{"address":"2606:4700:440d::ac40:9389","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"chance-cz.mail.protection.outlook.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":"charles.ns.cloudflare.com","ipv6":true},{"host":"roxy.ns.cloudflare.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 403.","hops":[{"url":"https://chance.cz/","address":"2606:4700:440d::ac40:9389","status":302,"tls":"valid"},{"url":"https://www.chance.cz/","address":"2606:4700:440d::6812:2877","status":403,"tls":"valid"}]},"receiptId":"dWlcDi3lc-","reused":true,"measuredAt":"2026-11-15T15:46:04.059Z"}