{"kind":"host","input":"crashlytics.com","report":{"host":"crashlytics.com","checkedAt":"2026-10-30T22:04:31.103Z","a":{"status":"found","values":["216.239.32.29"],"ttl":40,"via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only","www":{"host":"www.crashlytics.com","a":{"status":"found","values":["173.194.45.113","173.194.45.138","173.194.45.100","173.194.45.102","173.194.45.139","173.194.45.101"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2607:f8b0:4004:c1d::66","2607:f8b0:4004:c1d::65","2607:f8b0:4004:c1d::8b","2607:f8b0:4004:c1d::64"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack"}},"readiness":{"grade":"D","summary":"The website has no IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"fail","detail":"crashlytics.com has no AAAA record."},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.crashlytics.com has 4 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2607:f8b0:4004:c1d::66","result":"answers","port":443},{"address":"2607:f8b0:4004:c1d::65","result":"answers","port":443},{"address":"2607:f8b0:4004:c1d::8b","result":"answers","port":443},{"address":"2607:f8b0:4004:c1d::64","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"smtp.google.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":"ns3.google.com","ipv6":true},{"host":"ns4.google.com","ipv6":true},{"host":"ns1.google.com","ipv6":true},{"host":"ns2.google.com","ipv6":true}]}]},"receiptId":"k-ww8ojWHk"}