{"kind":"host","input":"youtu.be","report":{"host":"youtu.be","checkedAt":"2026-10-31T06:16:23.615Z","a":{"status":"found","values":["172.253.63.91","172.253.63.190","172.253.63.136","172.253.63.93"],"ttl":72,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2607:f8b0:4004:c1b::be","2607:f8b0:4004:c1b::88","2607:f8b0:4004:c1b::5d","2607:f8b0:4004:c1b::5b"],"ttl":194,"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":"youtu.be has 4 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2607:f8b0:4004:c1b::be","result":"answers","port":443},{"address":"2607:f8b0:4004:c1b::88","result":"answers","port":443},{"address":"2607:f8b0:4004:c1b::5d","result":"answers","port":443},{"address":"2607:f8b0:4004:c1b::5b","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"smtp.google.com","ipv6":true},{"host":"gmr-smtp-in.l.google.com","ipv6":true}]},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"ns4.google.com","ipv6":true},{"host":"ns3.google.com","ipv6":true},{"host":"ns1.google.com","ipv6":true},{"host":"ns2.google.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://youtu.be/","address":"2607:f8b0:4004:c1b::be","status":303,"tls":"valid"},{"url":"https://www.youtube.com/?feature=youtu.be","address":"2001:4860:482d:400::","status":200,"tls":"valid"}]},"receiptId":"S1CwP-Mpn4"}