{"domain":"rbx.com","result":true,"measuredAt":"2026-11-13T02:32:25.141Z","receiptId":"RggRpj6-QQ","answer":{"kind":"host","input":"rbx.com","report":{"host":"rbx.com","checkedAt":"2026-11-13T02:32:24.987Z","a":{"status":"found","values":["3.171.76.93","3.171.76.72","3.171.76.3","3.171.76.100"],"ttl":60,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2600:9000:28a6:1000:3:66ef:d540:93a1","2600:9000:28a6:bc00:3:66ef:d540:93a1","2600:9000:28a6:5000:3:66ef:d540:93a1","2600:9000:28a6:f800:3:66ef:d540:93a1","2600:9000:28a6:2400:3:66ef:d540:93a1","2600:9000:28a6:c000:3:66ef:d540:93a1","2600:9000:28a6:d400:3:66ef:d540:93a1","2600:9000:28a6:e200:3:66ef:d540:93a1"],"ttl":60,"via":"Cloudflare","cname":[]},"verdict":"dual-stack"},"readiness":{"grade":"B","summary":"Works over IPv6, with one gap: its nameservers lack IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"pass","detail":"rbx.com has 4 IPv6 addresses and answers on every one we tested (4 more not tested).","addresses":[{"address":"2600:9000:28a6:1000:3:66ef:d540:93a1","result":"answers","port":443},{"address":"2600:9000:28a6:bc00:3:66ef:d540:93a1","result":"answers","port":443},{"address":"2600:9000:28a6:5000:3:66ef:d540:93a1","result":"answers","port":443},{"address":"2600:9000:28a6:f800:3:66ef:d540:93a1","result":"answers","port":443},{"address":"2600:9000:28a6:2400:3:66ef:d540:93a1","result":"not tested"},{"address":"2600:9000:28a6:c000:3:66ef:d540:93a1","result":"not tested"},{"address":"2600:9000:28a6:d400:3:66ef:d540:93a1","result":"not tested"},{"address":"2600:9000:28a6:e200:3:66ef:d540:93a1","result":"not tested"}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"rbx-com.mail.protection.outlook.com","ipv6":true}]},{"key":"dns","label":"Nameservers have IPv6","status":"fail","detail":"No nameserver has an AAAA record — an IPv6-only resolver can't reach this domain's DNS.","hosts":[{"host":"nspx1.roblox.com","ipv6":false},{"host":"nspx2.roblox.net","ipv6":false},{"host":"nspx3.roblox.us","ipv6":false},{"host":"nspx4.roblox.co.uk","ipv6":false}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate: HTTP 200.","hops":[{"url":"https://rbx.com/","address":"2600:9000:28a6:1000:3:66ef:d540:93a1","status":200,"tls":"valid"}]}},"states":[{"firstSeen":"2026-11-04T12:52:36.098Z","lastConfirmed":"2026-11-13T02:32:25.141Z","checks":2,"verdict":"dual-stack","grade":"B","web":"pass","www":null,"mail":"pass","dns":"fail","secondLook":null}]}