{"kind":"host","input":"nps.gov","report":{"host":"nps.gov","checkedAt":"2026-10-31T14:12:15.632Z","a":{"status":"found","values":["35.169.243.105"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2600:9000:20aa:0:1:983:9400:93a1"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.nps.gov","a":{"status":"found","values":["3.171.61.24","3.171.61.34","3.171.61.95","3.171.61.128"],"ttl":55,"via":"Cloudflare","cname":["d1tidwb7hrqonk.cloudfront.net"]},"aaaa":{"status":"found","values":["2600:9000:28a3:6400:1:983:9400:93a1","2600:9000:28a3:1800:1:983:9400:93a1","2600:9000:28a3:9200:1:983:9400:93a1","2600:9000:28a3:3400:1:983:9400:93a1","2600:9000:28a3:b200:1:983:9400:93a1","2600:9000:28a3:9800:1:983:9400:93a1","2600:9000:28a3:1e00:1:983:9400:93a1","2600:9000:28a3:f000:1:983:9400:93a1"],"ttl":60,"via":"Cloudflare","cname":["d1tidwb7hrqonk.cloudfront.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":"nps.gov has an AAAA record and answers on it.","addresses":[{"address":"2600:9000:20aa:0:1:983:9400:93a1","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.nps.gov has 4 IPv6 addresses and answers on every one we tested (4 more not tested).","addresses":[{"address":"2600:9000:28a3:6400:1:983:9400:93a1","result":"answers","port":443},{"address":"2600:9000:28a3:1800:1:983:9400:93a1","result":"answers","port":443},{"address":"2600:9000:28a3:9200:1:983:9400:93a1","result":"answers","port":443},{"address":"2600:9000:28a3:3400:1:983:9400:93a1","result":"answers","port":443},{"address":"2600:9000:28a3:b200:1:983:9400:93a1","result":"not tested"},{"address":"2600:9000:28a3:9800:1:983:9400:93a1","result":"not tested"},{"address":"2600:9000:28a3:1e00:1:983:9400:93a1","result":"not tested"},{"address":"2600:9000:28a3:f000:1:983:9400:93a1","result":"not tested"}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"nps-gov.mail.protection.outlook.com","ipv6":true}]},{"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":"ivan.ns.cloudflare.com","ipv6":true},{"host":"lucy.ns.cloudflare.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://nps.gov/","address":"2600:9000:20aa:0:1:983:9400:93a1","status":302,"tls":"valid"},{"url":"https://nps.gov/index.htm","address":"2600:9000:20aa:0:1:983:9400:93a1","status":200,"tls":"valid"}]},"receiptId":"wXyaSmzn6D","reused":true,"measuredAt":"2026-10-31T14:12:15.933Z"}