{"domain":"mastercard.com","result":true,"measuredAt":"2026-11-02T03:30:03.653Z","receiptId":"npA06EwGEC","answer":{"kind":"host","input":"mastercard.com","report":{"host":"mastercard.com","checkedAt":"2026-11-02T03:30:03.592Z","a":{"status":"found","values":["216.119.218.99"],"ttl":3600,"via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only","www":{"host":"www.mastercard.com","a":{"status":"found","values":["104.81.165.82"],"ttl":20,"via":"Cloudflare","cname":["www.mastercard.com.edgekey.net","e5188.x.akamaiedge.net"]},"aaaa":{"status":"absent","via":"Cloudflare","cname":["www.mastercard.com.edgekey.net","e5188.x.akamaiedge.net"]},"verdict":"ipv4-only"}},"readiness":{"grade":"D","summary":"The website has no IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"fail","detail":"mastercard.com has no AAAA record."},{"key":"www","label":"www over IPv6","status":"fail","detail":"www.mastercard.com has no AAAA record."},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"fail","detail":"None of the mail servers has an AAAA record.","hosts":[{"host":"mc.smtp.2.mastercard.com","ipv6":false},{"host":"mc.smtp.1.mastercard.com","ipv6":false},{"host":"mxb-00078002.gslb.pphosted.com","ipv6":false},{"host":"mxa-00078002.gslb.pphosted.com","ipv6":false}]},{"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":"a7-67.akam.net","ipv6":true},{"host":"a9-64.akam.net","ipv6":true},{"host":"a22-65.akam.net","ipv6":true},{"host":"a18-64.akam.net","ipv6":true},{"host":"a1-29.akam.net","ipv6":true},{"host":"a26-66.akam.net","ipv6":true}]}]}},"states":[{"firstSeen":"2026-11-02T03:30:03.653Z","lastConfirmed":"2026-11-02T03:30:03.653Z","checks":1,"verdict":"ipv4-only","grade":"D","web":"fail","www":"fail","mail":"fail","dns":"pass","secondLook":null}]}