{"kind":"host","input":"autodiscover.uchicago.edu","report":{"host":"autodiscover.uchicago.edu","checkedAt":"2026-11-01T15:41:40.301Z","a":{"status":"found","values":["40.104.46.88","52.96.62.232","52.96.87.200","52.96.87.216","52.96.88.40","52.96.109.168","52.96.111.56","52.96.111.120"],"ttl":10,"via":"Cloudflare","cname":["autodiscover.outlook.com","autodiscover.outlook.cloud.microsoft","acdcatm.autodiscover.mira.tm.svc.cloud.microsoft","atm.autodiscover.mira.tm.svc.cloud.microsoft"]},"aaaa":{"status":"found","values":["2603:1036:302:4846::8","2603:1036:303:5::8","2603:1036:302:4837::8","2603:1036:303:3c09::8"],"ttl":10,"via":"Cloudflare","cname":["autodiscover.outlook.com","autodiscover.outlook.cloud.microsoft","acdcatm.autodiscover.mira.tm.svc.cloud.microsoft","autod.ms-acdc-autod.office.com"]},"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":"autodiscover.uchicago.edu has 4 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2603:1036:302:4846::8","result":"answers","port":80},{"address":"2603:1036:303:5::8","result":"answers","port":80},{"address":"2603:1036:302:4837::8","result":"answers","port":80},{"address":"2603:1036:303:3c09::8","result":"answers","port":80}]},{"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":"ucns1.uchicago.yale.edu","ipv6":false},{"host":"ucns1.uchicago.uiowa.edu","ipv6":false},{"host":"ucns3.uchicago.edu","ipv6":false},{"host":"ucns4.uchicago.edu","ipv6":false}]}]},"https":{"status":"unknown","summary":"autodiscover.uchicago.edu didn't complete an HTTPS request over IPv6 (ECONNREFUSED).","hops":[{"url":"https://autodiscover.uchicago.edu/","address":"2603:1036:302:4846::8","note":"ECONNREFUSED"}]},"receiptId":"CG3PuYtGso","reused":true,"measuredAt":"2026-11-01T15:41:40.385Z"}