{"domain":"railway.app","result":true,"measuredAt":"2026-11-02T13:24:21.122Z","receiptId":"MtgCTkkLk2","answer":{"kind":"host","input":"railway.app","report":{"host":"railway.app","checkedAt":"2026-11-02T13:24:21.059Z","a":{"status":"found","values":["104.18.10.246","104.18.11.246"],"ttl":180,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700::6812:bf6","2606:4700::6812:af6"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.railway.app","a":{"status":"found","values":["104.18.10.246","104.18.11.246"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700::6812:bf6","2606:4700::6812:af6"],"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":"railway.app has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700::6812:bf6","result":"answers","port":443},{"address":"2606:4700::6812:af6","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.railway.app has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700::6812:bf6","result":"answers","port":443},{"address":"2606:4700::6812:af6","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"aspmx.l.google.com","ipv6":true},{"host":"alt3.aspmx.l.google.com","ipv6":true},{"host":"alt4.aspmx.l.google.com","ipv6":true},{"host":"alt1.aspmx.l.google.com","ipv6":true},{"host":"alt2.aspmx.l.google.com","ipv6":true}]},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"3 of 3 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"blue.foundationdns.com","ipv6":true},{"host":"blue.foundationdns.net","ipv6":true},{"host":"blue.foundationdns.org","ipv6":true}]}]},"https":{"status":"fail","problem":"redirect-no-ipv6","summary":"Redirects to railway.com, which has no IPv6 address — so IPv6 visitors end up needing IPv4 after all.","hops":[{"url":"https://railway.app/","address":"2606:4700::6812:bf6","status":301,"tls":"valid"},{"url":"https://railway.com/","note":"redirects to railway.com, which has no IPv6 address"}]}},"states":[{"firstSeen":"2026-11-02T13:24:21.122Z","lastConfirmed":"2026-11-02T13:24:21.122Z","checks":1,"verdict":"dual-stack","grade":"A","web":"pass","www":"pass","mail":"pass","dns":"pass","secondLook":null}]}