{"kind":"host","input":"outlook.rtp.pt","report":{"host":"outlook.rtp.pt","checkedAt":"2026-11-15T17:02:27.382Z","a":{"status":"found","values":["40.99.232.114","40.104.16.226","40.104.46.82","40.104.47.98","52.96.87.242","52.96.88.114","52.96.109.146","52.96.181.34"],"ttl":10,"via":"Cloudflare","cname":["outlook.office365.com","outlook.cloud.microsoft","atm.outlook.mira.tm.svc.cloud.microsoft"]},"aaaa":{"status":"found","values":["2603:1036:207:459::2","2603:1036:207:45c::2","2603:1036:302:415c::2","2603:1036:302:415d::2","2603:1036:302:415f::2","2603:1036:302:4830::2","2603:1036:302:4836::2","2603:1036:302:505d::2"],"ttl":10,"via":"Cloudflare","cname":["outlook.office365.com","outlook.cloud.microsoft","atm.outlook.mira.tm.svc.cloud.microsoft"]},"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":"outlook.rtp.pt has 4 IPv6 addresses and answers on every one we tested (4 more not tested).","addresses":[{"address":"2603:1036:207:459::2","result":"answers","port":443},{"address":"2603:1036:207:45c::2","result":"answers","port":443},{"address":"2603:1036:302:415c::2","result":"answers","port":443},{"address":"2603:1036:302:415d::2","result":"answers","port":443},{"address":"2603:1036:302:415f::2","result":"not tested"},{"address":"2603:1036:302:4830::2","result":"not tested"},{"address":"2603:1036:302:4836::2","result":"not tested"},{"address":"2603:1036:302:505d::2","result":"not tested"}]},{"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":"ns2.ptempresas.pt","ipv6":false},{"host":"ns10.ptempresas.pt","ipv6":false},{"host":"ns1.ptempresas.pt","ipv6":false}]}]},"https":{"status":"fail","problem":"certificate","summary":"The certificate served over IPv6 at 2603:1036:207:459::2 isn't valid for outlook.rtp.pt: ERR_TLS_CERT_ALTNAME_INVALID.","hops":[{"url":"https://outlook.rtp.pt/","address":"2603:1036:207:459::2","tls":"ERR_TLS_CERT_ALTNAME_INVALID"}]},"receiptId":"_whpjh1alh","reused":true,"measuredAt":"2026-11-15T17:02:28.074Z"}