{"kind":"host","input":"appspot.com","report":{"host":"appspot.com","checkedAt":"2026-10-31T19:44:39.191Z","a":{"status":"found","values":["172.253.115.113","172.253.115.101","172.253.115.138","172.253.115.139","172.253.115.100","172.253.115.102"],"ttl":34,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2607:f8b0:4004:c23::65","2607:f8b0:4004:c23::64","2607:f8b0:4004:c23::8b","2607:f8b0:4004:c23::71"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.appspot.com","a":{"status":"found","values":["172.253.122.100","172.253.122.113","172.253.122.101","172.253.122.102","172.253.122.139","172.253.122.138"],"ttl":137,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2607:f8b0:4004:c21::66","2607:f8b0:4004:c21::8b","2607:f8b0:4004:c21::8a","2607:f8b0:4004:c21::64"],"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":"appspot.com has 4 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2607:f8b0:4004:c23::65","result":"answers","port":443},{"address":"2607:f8b0:4004:c23::64","result":"answers","port":443},{"address":"2607:f8b0:4004:c23::8b","result":"answers","port":443},{"address":"2607:f8b0:4004:c23::71","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.appspot.com has 4 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2607:f8b0:4004:c21::66","result":"answers","port":443},{"address":"2607:f8b0:4004:c21::8b","result":"answers","port":443},{"address":"2607:f8b0:4004:c21::8a","result":"answers","port":443},{"address":"2607:f8b0:4004:c21::64","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":"ns3.google.com","ipv6":true},{"host":"ns4.google.com","ipv6":true},{"host":"ns2.google.com","ipv6":true},{"host":"ns1.google.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 3 redirects: HTTP 200.","hops":[{"url":"https://appspot.com/","address":"2607:f8b0:4004:c23::65","status":302,"tls":"valid"},{"url":"https://console.cloud.google.com/appengine","address":"2607:f8b0:4004:c06::66","status":302,"tls":"valid"},{"url":"https://accounts.google.com/ServiceLogin?service=cloudconsole&passive=1209600&osid=1&continue=https://console.cloud.google.com/appengine&followup=https://console.cloud.google.com/appengine","address":"2607:f8b0:4004:c1b::54","status":302,"tls":"valid"},{"url":"https://accounts.google.com/v3/signin/identifier?continue=https://console.cloud.google.com/appengine&followup=https://console.cloud.google.com/appengine&osid=1&passive=1209600&service=cloudconsole&flowName=WebLiteSignIn&flowEntry=ServiceLogin&dsh=S-1203959966:1793475879302292","address":"2607:f8b0:4004:c1b::54","status":200,"tls":"valid"}]},"receiptId":"GJJKXaK81l"}