{"kind":"host","input":"calendar.tcu.edu","report":{"host":"calendar.tcu.edu","checkedAt":"2026-11-03T09:49:56.874Z","a":{"status":"found","values":["150.171.109.113"],"ttl":10,"via":"Cloudflare","cname":["tcu.enterprise.localist.com","enterprise-web.localist.com","localist-production-ftgjadhqgwdqhbfp.z03.azurefd.net","mr-z03.tm-azurefd.net"]},"aaaa":{"status":"found","values":["2603:1061:14:75::1"],"ttl":10,"via":"Cloudflare","cname":["tcu.enterprise.localist.com","enterprise-web.localist.com","localist-production-ftgjadhqgwdqhbfp.z03.azurefd.net","mr-z03.tm-azurefd.net"]},"verdict":"dual-stack","www":{"host":"www.calendar.tcu.edu","a":{"status":"found","values":["138.237.38.30"],"ttl":86400,"via":"Cloudflare","cname":["webcommon10.it.tcu.edu"]},"aaaa":{"status":"absent","via":"Cloudflare","cname":["webcommon10.it.tcu.edu"]},"verdict":"ipv4-only"}},"readiness":{"grade":"C","summary":"Works over IPv6, with gaps: www doesn't fully work over IPv6; its nameservers lack IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"pass","detail":"calendar.tcu.edu has an AAAA record and answers on it.","addresses":[{"address":"2603:1061:14:75::1","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"fail","detail":"www.calendar.tcu.edu has no AAAA record."},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"No MX records, so mail goes to the domain's own address (implicit MX). It has an 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}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate: HTTP 200.","hops":[{"url":"https://calendar.tcu.edu/","address":"2603:1061:14:75::1","status":200,"tls":"valid"}]},"receiptId":"x-9hTVSAJb","reused":true,"measuredAt":"2026-11-03T09:49:57.086Z"}