{"kind":"host","input":"calendar.depaul.edu","report":{"host":"calendar.depaul.edu","checkedAt":"2026-11-04T06:46:34.856Z","a":{"status":"found","values":["216.220.184.90"],"ttl":30,"via":"Cloudflare","cname":["redirect.depaul.edu","redirect.l.depaul.edu"]},"aaaa":{"status":"found","values":["2620:0:2250:3b10::90"],"ttl":30,"via":"Cloudflare","cname":["redirect.depaul.edu","redirect.l.depaul.edu"]},"verdict":"dual-stack"},"readiness":{"grade":"B","summary":"Works over IPv6, with one gap: its nameservers lack IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"pass","detail":"calendar.depaul.edu has an AAAA record and answers on it.","addresses":[{"address":"2620:0:2250:3b10::90","result":"answers","port":443}]},{"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":"ns3.depaul.edu","ipv6":false},{"host":"ns2.depaul.edu","ipv6":false},{"host":"ns1.depaul.edu","ipv6":false},{"host":"ns4.depaul.edu","ipv6":false}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://calendar.depaul.edu/","address":"2620:0:2250:3b10::90","status":301,"tls":"valid"},{"url":"https://academics.depaul.edu/calendar/Pages/default.aspx","address":"2620:0:2250:3b10::52","status":200,"tls":"valid"}]},"receiptId":"HiZhjoFpyV","reused":true,"measuredAt":"2026-11-04T06:46:35.770Z"}