{"kind":"host","input":"redhat.com","report":{"host":"redhat.com","checkedAt":"2026-10-31T10:18:19.999Z","a":{"status":"found","values":["34.235.198.240","52.200.142.250"],"ttl":2139,"via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only","www":{"host":"www.redhat.com","a":{"status":"found","values":["104.81.173.78"],"ttl":20,"via":"Cloudflare","cname":["wangsu-www.redhat.com.edgekey.net","wangsu-www.redhat.com.edgekey.net.wanakadns.net","e3396.dscx.akamaiedge.net"]},"aaaa":{"status":"found","values":["2600:1408:c400:1887::d44","2600:1408:c400:188d::d44"],"ttl":20,"via":"Cloudflare","cname":["wangsu-www.redhat.com.edgekey.net","wangsu-www.redhat.com.edgekey.net.wanakadns.net","e3396.dscx.akamaiedge.net"]},"verdict":"dual-stack"}},"readiness":{"grade":"D","summary":"The website has no IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"fail","detail":"redhat.com has no AAAA record."},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.redhat.com has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2600:1408:c400:1887::d44","result":"answers","port":443},{"address":"2600:1408:c400:188d::d44","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":"us-smtp-inbound-1.mimecast.com","ipv6":false},{"host":"us-smtp-inbound-2.mimecast.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":"dns1.p01.nsone.net","ipv6":true},{"host":"dns2.p01.nsone.net","ipv6":true},{"host":"dns3.p01.nsone.net","ipv6":true},{"host":"dns4.p01.nsone.net","ipv6":true},{"host":"dns1.p02.nsone.net","ipv6":true},{"host":"dns2.p02.nsone.net","ipv6":true}]}]},"receiptId":"nAS6jfz22z"}