{"kind":"host","input":"oup.com","report":{"host":"oup.com","checkedAt":"2026-10-31T21:54:55.622Z","a":{"status":"found","values":["75.2.119.185"],"ttl":900,"via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only","www":{"host":"www.oup.com","a":{"status":"found","values":["75.2.119.185"],"ttl":857,"via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only"}},"readiness":{"grade":"D","summary":"The website has no IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"fail","detail":"oup.com has no AAAA record."},{"key":"www","label":"www over IPv6","status":"fail","detail":"www.oup.com has no AAAA record."},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"oup-com.mail.protection.outlook.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-1127.awsdns-12.org","ipv6":true},{"host":"ns-1909.awsdns-46.co.uk","ipv6":true},{"host":"ns-357.awsdns-44.com","ipv6":true},{"host":"ns-978.awsdns-58.net","ipv6":true}]}]},"receiptId":"UbJkU_jPHM","reused":true,"measuredAt":"2026-10-31T21:54:55.704Z"}