{"kind":"host","input":"stuttgart.de","report":{"host":"stuttgart.de","checkedAt":"2026-11-15T15:54:02.978Z","a":{"status":"found","values":["162.159.142.131"],"ttl":120,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:7::277"],"ttl":120,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.stuttgart.de","a":{"status":"found","values":["162.159.142.131"],"ttl":120,"via":"Cloudflare","cname":["stuttgart.de"]},"aaaa":{"status":"found","values":["2606:4700:7::277"],"ttl":120,"via":"Cloudflare","cname":["stuttgart.de"]},"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":"stuttgart.de has an AAAA record and answers on it.","addresses":[{"address":"2606:4700:7::277","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.stuttgart.de has an AAAA record and answers on it.","addresses":[{"address":"2606:4700:7::277","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":"x104s32.stuttgart.de","ipv6":false},{"host":"x104s31.stuttgart.de","ipv6":false}]},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"3 of 3 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"ns2.arcor-ip.de","ipv6":true},{"host":"ns3.arcor-ip.de","ipv6":true},{"host":"ns1.arcor-ip.de","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://stuttgart.de/","address":"2606:4700:7::277","status":302,"tls":"valid"},{"url":"https://www.stuttgart.de/","address":"2606:4700:7::277","status":200,"tls":"valid"}]},"receiptId":"BbdC7UIiGu","reused":true,"measuredAt":"2026-11-15T15:54:03.732Z"}