{"kind":"host","input":"certcenter.com","report":{"host":"certcenter.com","checkedAt":"2026-10-31T07:06:25.958Z","a":{"status":"found","values":["216.168.244.42"],"ttl":3600,"via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only","www":{"host":"www.certcenter.com","a":{"status":"failed","error":"Google rcode 2"},"aaaa":{"status":"failed","error":"Google rcode 2"},"verdict":"unknown"}},"readiness":{"grade":"D","summary":"The website has no IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"fail","detail":"certcenter.com has no AAAA record."},{"key":"www","label":"www over IPv6","status":"unknown","detail":"The AAAA lookup failed."},{"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":"10 of 10 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"ns23.digicertdns.net","ipv6":true},{"host":"pdns196.ultradns.org","ipv6":true},{"host":"pdns196.ultradns.com","ipv6":true},{"host":"ns22.digicertdns.com","ipv6":true},{"host":"ns21.digicertdns.com","ipv6":true},{"host":"pdns196.ultradns.net","ipv6":true},{"host":"ns20.digicertdns.com","ipv6":true},{"host":"ns24.digicertdns.net","ipv6":true},{"host":"pdns196.ultradns.biz","ipv6":true},{"host":"ns25.digicertdns.net","ipv6":true}]}]},"receiptId":"0EQpv392bm"}