{"kind":"host","input":"onlineshop.cz","report":{"host":"onlineshop.cz","checkedAt":"2026-11-15T15:50:38.186Z","a":{"status":"found","values":["104.26.2.39","104.26.3.39","172.67.73.59"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:20::681a:227","2606:4700:20::681a:327","2606:4700:20::ac43:493b"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.onlineshop.cz","a":{"status":"found","values":["104.26.3.39","172.67.73.59","104.26.2.39"],"ttl":209,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:20::681a:227","2606:4700:20::681a:327","2606:4700:20::ac43:493b"],"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":"onlineshop.cz has 3 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:20::681a:227","result":"answers","port":443},{"address":"2606:4700:20::681a:327","result":"answers","port":443},{"address":"2606:4700:20::ac43:493b","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.onlineshop.cz has 3 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:20::681a:227","result":"answers","port":443},{"address":"2606:4700:20::681a:327","result":"answers","port":443},{"address":"2606:4700:20::ac43:493b","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":"kokes.shosting.cz","ipv6":false},{"host":"ns2.shosting.cz","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":"brady.ns.cloudflare.com","ipv6":true},{"host":"journey.ns.cloudflare.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://onlineshop.cz/","address":"2606:4700:20::681a:227","status":301,"tls":"valid"},{"url":"https://www.onlineshop.cz/","address":"2606:4700:20::681a:227","status":200,"tls":"valid"}]},"receiptId":"PiQ99Hwf6S","reused":true,"measuredAt":"2026-11-15T15:50:39.237Z"}