{"kind":"host","input":"semanticscholar.org","report":{"host":"semanticscholar.org","checkedAt":"2026-11-02T10:35:44.655Z","a":{"status":"found","values":["52.85.193.38","52.85.193.53","52.85.193.73","52.85.193.17"],"ttl":21,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2600:9000:215a:4800:6:4565:580:93a1","2600:9000:215a:1c00:6:4565:580:93a1","2600:9000:215a:8e00:6:4565:580:93a1","2600:9000:215a:e00:6:4565:580:93a1","2600:9000:215a:f000:6:4565:580:93a1","2600:9000:215a:4c00:6:4565:580:93a1","2600:9000:215a:dc00:6:4565:580:93a1","2600:9000:215a:200:6:4565:580:93a1"],"ttl":60,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.semanticscholar.org","a":{"status":"found","values":["52.85.193.38","52.85.193.53","52.85.193.17","52.85.193.73"],"ttl":12,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2600:9000:215a:2e00:6:4565:580:93a1","2600:9000:215a:3000:6:4565:580:93a1","2600:9000:215a:4600:6:4565:580:93a1","2600:9000:215a:600:6:4565:580:93a1","2600:9000:215a:400:6:4565:580:93a1","2600:9000:215a:1200:6:4565:580:93a1","2600:9000:215a:6400:6:4565:580:93a1","2600:9000:215a:9c00:6:4565:580:93a1"],"ttl":9,"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":"semanticscholar.org has 4 IPv6 addresses and answers on every one we tested (4 more not tested).","addresses":[{"address":"2600:9000:215a:4800:6:4565:580:93a1","result":"answers","port":443},{"address":"2600:9000:215a:1c00:6:4565:580:93a1","result":"answers","port":443},{"address":"2600:9000:215a:8e00:6:4565:580:93a1","result":"answers","port":443},{"address":"2600:9000:215a:e00:6:4565:580:93a1","result":"answers","port":443},{"address":"2600:9000:215a:f000:6:4565:580:93a1","result":"not tested"},{"address":"2600:9000:215a:4c00:6:4565:580:93a1","result":"not tested"},{"address":"2600:9000:215a:dc00:6:4565:580:93a1","result":"not tested"},{"address":"2600:9000:215a:200:6:4565:580:93a1","result":"not tested"}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.semanticscholar.org has 4 IPv6 addresses and answers on every one we tested (4 more not tested).","addresses":[{"address":"2600:9000:215a:2e00:6:4565:580:93a1","result":"answers","port":443},{"address":"2600:9000:215a:3000:6:4565:580:93a1","result":"answers","port":443},{"address":"2600:9000:215a:4600:6:4565:580:93a1","result":"answers","port":443},{"address":"2600:9000:215a:600:6:4565:580:93a1","result":"answers","port":443},{"address":"2600:9000:215a:400:6:4565:580:93a1","result":"not tested"},{"address":"2600:9000:215a:1200:6:4565:580:93a1","result":"not tested"},{"address":"2600:9000:215a:6400:6:4565:580:93a1","result":"not tested"},{"address":"2600:9000:215a:9c00:6:4565:580:93a1","result":"not tested"}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"aspmx.l.google.com","ipv6":true},{"host":"aspmx2.googlemail.com","ipv6":true},{"host":"aspmx3.googlemail.com","ipv6":true},{"host":"alt1.aspmx.l.google.com","ipv6":true},{"host":"alt2.aspmx.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":"ns-1437.awsdns-51.org","ipv6":true},{"host":"ns-1772.awsdns-29.co.uk","ipv6":true},{"host":"ns-290.awsdns-36.com","ipv6":true},{"host":"ns-586.awsdns-09.net","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://semanticscholar.org/","address":"2600:9000:215a:4800:6:4565:580:93a1","status":301,"tls":"valid"},{"url":"https://www.semanticscholar.org/","address":"2600:9000:215a:2e00:6:4565:580:93a1","status":200,"tls":"valid"}]},"receiptId":"TLgIhUc0cu","reused":true,"measuredAt":"2026-11-02T10:35:44.856Z"}