{"kind":"host","input":"firefox-portal-detection.com","report":{"host":"firefox-portal-detection.com","checkedAt":"2026-10-31T22:20:26.739Z","a":{"status":"found","values":["151.101.65.91","151.101.193.91","151.101.1.91","151.101.129.91"],"ttl":0,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2a04:4e42::347","2a04:4e42:400::347","2a04:4e42:200::347","2a04:4e42:600::347"],"ttl":0,"via":"Cloudflare","cname":[]},"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":"firefox-portal-detection.com has 4 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2a04:4e42::347","result":"answers","port":443},{"address":"2a04:4e42:400::347","result":"answers","port":443},{"address":"2a04:4e42:200::347","result":"answers","port":443},{"address":"2a04:4e42:600::347","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":"pass","detail":"4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"ns-cloud-d2.googledomains.com","ipv6":true},{"host":"ns-cloud-d4.googledomains.com","ipv6":true},{"host":"ns-cloud-d3.googledomains.com","ipv6":true},{"host":"ns-cloud-d1.googledomains.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate: HTTP 200.","hops":[{"url":"https://firefox-portal-detection.com/","address":"2a04:4e42:600::347","status":200,"tls":"valid"}]},"receiptId":"u8fe-O6CX7","reused":true,"measuredAt":"2026-10-31T22:20:26.801Z"}