{"kind":"host","input":"python.org","report":{"host":"python.org","checkedAt":"2026-10-31T08:42:42.006Z","a":{"status":"found","values":["151.101.64.223","151.101.0.223","151.101.128.223","151.101.192.223"],"ttl":16,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2a04:4e42:200::223","2a04:4e42::223","2a04:4e42:400::223","2a04:4e42:600::223"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.python.org","a":{"status":"found","values":["151.101.64.223","151.101.128.223","151.101.192.223","151.101.0.223"],"ttl":30,"via":"Cloudflare","cname":["dualstack.python.map.fastly.net"]},"aaaa":{"status":"found","values":["2a04:4e42:400::223","2a04:4e42:600::223","2a04:4e42::223","2a04:4e42:200::223"],"ttl":47,"via":"Cloudflare","cname":["dualstack.python.map.fastly.net"]},"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":"python.org has 4 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2a04:4e42:200::223","result":"answers","port":443},{"address":"2a04:4e42::223","result":"answers","port":443},{"address":"2a04:4e42:400::223","result":"answers","port":443},{"address":"2a04:4e42:600::223","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.python.org has 4 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2a04:4e42:400::223","result":"answers","port":443},{"address":"2a04:4e42:600::223","result":"answers","port":443},{"address":"2a04:4e42::223","result":"answers","port":443},{"address":"2a04:4e42:200::223","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"mail.python.org","ipv6":true}]},{"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-1134.awsdns-13.org","ipv6":true},{"host":"ns-2046.awsdns-63.co.uk","ipv6":true},{"host":"ns-484.awsdns-60.com","ipv6":true},{"host":"ns-981.awsdns-58.net","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://python.org/","address":"2a04:4e42:200::223","status":301,"tls":"valid"},{"url":"https://www.python.org/","address":"2a04:4e42:400::223","status":200,"tls":"valid"}]},"receiptId":"Tkp4Fqnkrq"}