{"kind":"host","input":"cdn.byu.edu","report":{"host":"cdn.byu.edu","checkedAt":"2026-11-04T03:00:47.325Z","a":{"status":"found","values":["18.160.41.54","18.160.41.81","18.160.41.11","18.160.41.12"],"ttl":60,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2600:9000:24f2:3400:c:f870:e100:93a1","2600:9000:24f2:d400:c:f870:e100:93a1","2600:9000:24f2:f800:c:f870:e100:93a1","2600:9000:24f2:c000:c:f870:e100:93a1","2600:9000:24f2:fe00:c:f870:e100:93a1","2600:9000:24f2:f200:c:f870:e100:93a1","2600:9000:24f2:5800:c:f870:e100:93a1","2600:9000:24f2:da00:c:f870:e100:93a1"],"ttl":60,"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":"cdn.byu.edu has 4 IPv6 addresses and answers on every one we tested (4 more not tested).","addresses":[{"address":"2600:9000:24f2:3400:c:f870:e100:93a1","result":"answers","port":443},{"address":"2600:9000:24f2:d400:c:f870:e100:93a1","result":"answers","port":443},{"address":"2600:9000:24f2:f800:c:f870:e100:93a1","result":"answers","port":443},{"address":"2600:9000:24f2:c000:c:f870:e100:93a1","result":"answers","port":443},{"address":"2600:9000:24f2:fe00:c:f870:e100:93a1","result":"not tested"},{"address":"2600:9000:24f2:f200:c:f870:e100:93a1","result":"not tested"},{"address":"2600:9000:24f2:5800:c:f870:e100:93a1","result":"not tested"},{"address":"2600:9000:24f2:da00:c:f870:e100:93a1","result":"not tested"}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"No MX records, so mail goes to the domain's own address (implicit MX). It has an AAAA record."},{"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-1316.awsdns-36.org","ipv6":true},{"host":"ns-1749.awsdns-26.co.uk","ipv6":true},{"host":"ns-430.awsdns-53.com","ipv6":true},{"host":"ns-558.awsdns-05.net","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate: HTTP 404.","hops":[{"url":"https://cdn.byu.edu/","address":"2600:9000:24f2:3400:c:f870:e100:93a1","status":404,"tls":"valid"}]},"receiptId":"yXC0yCYPIb","reused":true,"measuredAt":"2026-11-04T03:00:47.601Z"}