{"kind":"host","input":"video.oreilly.com","report":{"host":"video.oreilly.com","checkedAt":"2026-11-01T11:13:00.513Z","a":{"status":"found","values":["104.18.41.61","172.64.146.195"],"ttl":60,"via":"Cloudflare","cname":["1926081.api.nvp1.ovp.kaltura.com","nvp1.api-cf.kaltura.com.cdn.cloudflare.net"]},"aaaa":{"status":"found","values":["2606:4700:440b::6812:293d","2a06:98c1:3103::ac40:92c3"],"ttl":60,"via":"Cloudflare","cname":["1926081.api.nvp1.ovp.kaltura.com","nvp1.api-cf.kaltura.com.cdn.cloudflare.net"]},"verdict":"dual-stack","www":{"host":"www.video.oreilly.com","a":{"status":"found","values":["34.169.83.167"],"ttl":60,"via":"Cloudflare","cname":["domain-redirects.corp.oreilly.com"]},"aaaa":{"status":"absent","via":"Cloudflare","cname":["domain-redirects.corp.oreilly.com"]},"verdict":"ipv4-only"}},"readiness":{"grade":"B","summary":"Works over IPv6, with one gap: www doesn't fully work over IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"pass","detail":"video.oreilly.com has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:440b::6812:293d","result":"answers","port":443},{"address":"2a06:98c1:3103::ac40:92c3","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"fail","detail":"www.video.oreilly.com has no AAAA record."},{"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":"6 of 6 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"a13-64.akam.net","ipv6":true},{"host":"a16-65.akam.net","ipv6":true},{"host":"a4-64.akam.net","ipv6":true},{"host":"a3-67.akam.net","ipv6":true},{"host":"a1-225.akam.net","ipv6":true},{"host":"a20-66.akam.net","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://video.oreilly.com/","address":"2606:4700:440b::6812:293d","status":301,"tls":"valid"},{"url":"https://corp.kaltura.com/","address":"2600:9000:28a9:6c00:1d:e1d2:fa80:93a1","status":200,"tls":"valid"}]},"receiptId":"N_BS90gjrh","reused":true,"measuredAt":"2026-11-01T11:13:00.638Z"}