{"kind":"host","input":"herokuapp.com","report":{"host":"herokuapp.com","checkedAt":"2026-10-31T10:44:10.412Z","a":{"status":"found","values":["18.214.195.106","44.220.123.167"],"ttl":58,"via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only","www":{"host":"www.herokuapp.com","a":{"status":"found","values":["18.214.195.106","44.220.123.167"],"ttl":60,"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":"herokuapp.com has no AAAA record."},{"key":"www","label":"www over IPv6","status":"fail","detail":"www.herokuapp.com has no AAAA record."},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"fail","detail":"No MX records, so mail goes to the domain's own address (implicit MX). It has no AAAA record."},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"8 of 8 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"dns1.p03.nsone.net","ipv6":true},{"host":"dns2.p03.nsone.net","ipv6":true},{"host":"dns3.p03.nsone.net","ipv6":true},{"host":"dns4.p03.nsone.net","ipv6":true},{"host":"ns01.herokudns.net","ipv6":true},{"host":"ns02.herokudns.net","ipv6":true},{"host":"ns03.herokudns.net","ipv6":true},{"host":"ns04.herokudns.net","ipv6":true}]}]},"receiptId":"zZgV7vMxhy"}