{"kind":"host","input":"system-lhr.fyi","report":{"host":"system-lhr.fyi","checkedAt":"2026-11-07T04:49:43.572Z","a":{"status":"found","values":["172.67.183.229","104.21.18.236"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:3034::6815:12ec","2606:4700:3031::ac43:b7e5"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.system-lhr.fyi","a":{"status":"found","values":["104.21.18.236","172.67.183.229"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:3031::ac43:b7e5","2606:4700:3034::6815:12ec"],"ttl":300,"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":"system-lhr.fyi has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:3034::6815:12ec","result":"answers","port":443},{"address":"2606:4700:3031::ac43:b7e5","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.system-lhr.fyi has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:3031::ac43:b7e5","result":"answers","port":443},{"address":"2606:4700:3034::6815:12ec","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":"2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"henrik.ns.cloudflare.com","ipv6":true},{"host":"tegan.ns.cloudflare.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://system-lhr.fyi/","address":"2606:4700:3034::6815:12ec","status":302,"tls":"valid"},{"url":"https://system-lhr.fyi/login","address":"2606:4700:3034::6815:12ec","status":200,"tls":"valid"}]},"receiptId":"GaGXsBWrkn","reused":true,"measuredAt":"2026-11-07T04:49:45.941Z"}