{"kind":"host","input":"email.tcu.edu","report":{"host":"email.tcu.edu","checkedAt":"2026-11-03T03:21:46.658Z","a":{"status":"found","values":["138.237.39.81"],"ttl":3600,"via":"Cloudflare","cname":["webcommon20.it.tcu.edu"]},"aaaa":{"status":"absent","via":"Cloudflare","cname":["webcommon20.it.tcu.edu"]},"verdict":"ipv4-only"},"readiness":{"grade":"D","summary":"The website has no IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"fail","detail":"email.tcu.edu 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":"ns99.tcu.edu","ipv6":false},{"host":"ns1.tcu.edu","ipv6":false}]}]},"receiptId":"kRPsCgFW2k","reused":true,"measuredAt":"2026-11-03T03:21:46.734Z"}