{"kind":"host","input":"t.co","report":{"host":"t.co","checkedAt":"2026-10-31T14:02:58.513Z","a":{"status":"found","values":["172.66.0.227"],"ttl":4,"via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only","www":{"host":"www.t.co","a":{"status":"found","values":["162.159.140.229"],"ttl":119,"via":"Cloudflare","cname":["t.co"]},"aaaa":{"status":"absent","via":"Cloudflare","cname":["t.co"]},"verdict":"ipv4-only"}},"readiness":{"grade":"D","summary":"The website has no IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"fail","detail":"t.co has no AAAA record."},{"key":"www","label":"www over IPv6","status":"fail","detail":"www.t.co 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":"fail","detail":"No nameserver has an AAAA record — an IPv6-only resolver can't reach this domain's DNS.","hosts":[{"host":"a.r06.twtrdns.net","ipv6":false},{"host":"a.u06.twtrdns.net","ipv6":false},{"host":"b.r06.twtrdns.net","ipv6":false},{"host":"b.u06.twtrdns.net","ipv6":false},{"host":"c.r06.twtrdns.net","ipv6":false},{"host":"c.u06.twtrdns.net","ipv6":false},{"host":"d.r06.twtrdns.net","ipv6":false},{"host":"d.u06.twtrdns.net","ipv6":false}]}]},"receiptId":"d9RYM7h3O1"}