{"kind":"host","input":"klaviyo.com","report":{"host":"klaviyo.com","checkedAt":"2026-10-31T15:07:30.997Z","a":{"status":"found","values":["18.165.83.97","18.165.83.92","18.165.83.46","18.165.83.109"],"ttl":60,"via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only","www":{"host":"www.klaviyo.com","a":{"status":"found","values":["104.18.40.137","172.64.147.119"],"ttl":49,"via":"Cloudflare","cname":["www.klaviyo.com.cdn.cloudflare.net"]},"aaaa":{"status":"found","values":["2606:4700:440c::6812:2889","2606:4700:440c::ac40:9377"],"ttl":32,"via":"Cloudflare","cname":["www.klaviyo.com.cdn.cloudflare.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":"klaviyo.com has no AAAA record."},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.klaviyo.com has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:440c::6812:2889","result":"answers","port":443},{"address":"2606:4700:440c::ac40:9377","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"aspmx.l.google.com","ipv6":true},{"host":"alt1.aspmx.l.google.com","ipv6":true},{"host":"alt2.aspmx.l.google.com","ipv6":true},{"host":"aspmx2.googlemail.com","ipv6":true},{"host":"aspmx3.googlemail.com","ipv6":true},{"host":"aspmx4.googlemail.com","ipv6":true},{"host":"aspmx5.googlemail.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-1372.awsdns-43.org","ipv6":true},{"host":"ns-1555.awsdns-02.co.uk","ipv6":true},{"host":"ns-224.awsdns-28.com","ipv6":true},{"host":"ns-963.awsdns-56.net","ipv6":true}]}]},"receiptId":"yEt1008lOi"}