{"kind":"host","input":"opensa-online.com","report":{"host":"opensa-online.com","checkedAt":"2026-11-02T06:35:25.861Z","a":{"status":"found","values":["172.67.187.242","104.21.7.171"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:3030::ac43:bbf2","2606:4700:3030::6815:7ab"],"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":"opensa-online.com has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:3030::ac43:bbf2","result":"answers","port":443},{"address":"2606:4700:3030::6815:7ab","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":"_dc-mx.e31ca0decdda.opensa-online.com","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":"michelle.ns.cloudflare.com","ipv6":true},{"host":"uriah.ns.cloudflare.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate: HTTP 403.","hops":[{"url":"https://opensa-online.com/","address":"2606:4700:3030::ac43:bbf2","status":403,"tls":"valid"}]},"receiptId":"TRLlXzBK4z","reused":true,"measuredAt":"2026-11-02T06:35:25.923Z"}