{"kind":"host","input":"autodiscover.mastercard.com","report":{"host":"autodiscover.mastercard.com","checkedAt":"2026-11-02T13:36:09.525Z","a":{"status":"found","values":["40.104.46.8","40.104.46.72","52.96.87.216","52.96.109.216","52.96.109.248","52.96.111.8","52.96.230.168","52.96.242.24"],"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":["2603:1036:207:455::8","2603:1036:207:2001::8","2603:1036:302:415d::8","2603:1036:302:415e::8","2603:1036:302:4832::8","2603:1036:302:4836::8","2603:1036:302:4844::8","2603:1036:302:5061::8"],"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"]},"verdict":"dual-stack"},"readiness":{"grade":"A","summary":"Website, mail and DNS all work over IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"pass","detail":"autodiscover.mastercard.com has 4 IPv6 addresses and answers on every one we tested (4 more not tested).","addresses":[{"address":"2603:1036:207:455::8","result":"answers","port":80},{"address":"2603:1036:207:2001::8","result":"answers","port":80},{"address":"2603:1036:302:415d::8","result":"answers","port":80},{"address":"2603:1036:302:415e::8","result":"answers","port":80},{"address":"2603:1036:302:4832::8","result":"not tested"},{"address":"2603:1036:302:4836::8","result":"not tested"},{"address":"2603:1036:302:4844::8","result":"not tested"},{"address":"2603:1036:302:5061::8","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":"pass","detail":"6 of 6 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"a9-64.akam.net","ipv6":true},{"host":"a1-29.akam.net","ipv6":true},{"host":"a7-67.akam.net","ipv6":true},{"host":"a18-64.akam.net","ipv6":true},{"host":"a22-65.akam.net","ipv6":true},{"host":"a26-66.akam.net","ipv6":true}]}]},"https":{"status":"unknown","summary":"autodiscover.mastercard.com didn't complete an HTTPS request over IPv6 (ECONNREFUSED).","hops":[{"url":"https://autodiscover.mastercard.com/","address":"2603:1036:207:455::8","note":"ECONNREFUSED"}]},"receiptId":"kLxLNaUYYB","reused":true,"measuredAt":"2026-11-02T13:36:09.569Z"}