{"kind":"host","input":"usc.edu","report":{"host":"usc.edu","checkedAt":"2026-11-02T16:56:42.912Z","a":{"status":"found","values":["23.185.0.3"],"ttl":10,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2620:12a:8000::3","2620:12a:8001::3"],"ttl":10,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.usc.edu","a":{"status":"found","values":["23.185.0.3"],"ttl":600,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2620:12a:8001::3","2620:12a:8000::3"],"ttl":600,"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":"usc.edu has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2620:12a:8000::3","result":"answers","port":443},{"address":"2620:12a:8001::3","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.usc.edu has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2620:12a:8001::3","result":"answers","port":443},{"address":"2620:12a:8000::3","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":"mx0a-00164701.pphosted.com","ipv6":false},{"host":"mx0b-00164701.pphosted.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":"ns0163.secondary.cloudflare.com","ipv6":true},{"host":"ns0037.secondary.cloudflare.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate: HTTP 200.","hops":[{"url":"https://usc.edu/","address":"2620:12a:8000::3","status":200,"tls":"valid"}]},"receiptId":"dfzcmkfrae","reused":true,"measuredAt":"2026-11-02T16:56:42.949Z"}