{"kind":"host","input":"app.constantcontact.com","report":{"host":"app.constantcontact.com","checkedAt":"2026-11-02T12:43:05.492Z","a":{"status":"found","values":["172.64.144.217","104.18.43.39"],"ttl":6,"via":"Cloudflare","cname":["app.constantcontact.com.cdn.cloudflare.net"]},"aaaa":{"status":"absent","via":"Cloudflare","cname":["app.constantcontact.com.cdn.cloudflare.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":"app.constantcontact.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":"4 of 4 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}]}]},"receiptId":"B_Su9ZVOyb","reused":true,"measuredAt":"2026-11-02T12:43:05.532Z"}