{"kind":"host","input":"seznam.cz","report":{"host":"seznam.cz","checkedAt":"2026-10-31T12:16:02.982Z","a":{"status":"found","values":["77.75.77.222","77.75.79.222"],"ttl":2907,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2a02:598:2::1222","2a02:598:a::79:222"],"ttl":3600,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.seznam.cz","a":{"status":"found","values":["77.75.77.222","77.75.79.222"],"ttl":3163,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2a02:598:2::1222","2a02:598:a::79:222"],"ttl":2356,"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":"seznam.cz has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2a02:598:2::1222","result":"answers","port":443},{"address":"2a02:598:a::79:222","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.seznam.cz has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2a02:598:2::1222","result":"answers","port":443},{"address":"2a02:598:a::79:222","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"mx1.seznam.cz","ipv6":true},{"host":"mx2.seznam.cz","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":"ams.seznam.cz","ipv6":true},{"host":"ans.seznam.cz","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://seznam.cz/","address":"2a02:598:2::1222","status":301,"tls":"valid"},{"url":"https://www.seznam.cz/","address":"2a02:598:2::1222","status":200,"tls":"valid"}]},"receiptId":"ziRuBBchhr"}