{"kind":"host","input":"gps.gov","report":{"host":"gps.gov","checkedAt":"2026-11-15T15:54:34.413Z","a":{"status":"found","values":["137.75.88.7","137.75.88.52"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only","www":{"host":"www.gps.gov","a":{"status":"found","values":["13.35.78.61","13.35.78.82","13.35.78.66","13.35.78.25"],"ttl":60,"via":"Cloudflare","cname":["dnb3askdf6ry.cloudfront.net"]},"aaaa":{"status":"found","values":["2600:9000:20ea:3600:3:7003:4380:93a1","2600:9000:20ea:f800:3:7003:4380:93a1","2600:9000:20ea:a200:3:7003:4380:93a1","2600:9000:20ea:9600:3:7003:4380:93a1","2600:9000:20ea:f000:3:7003:4380:93a1","2600:9000:20ea:f200:3:7003:4380:93a1","2600:9000:20ea:9200:3:7003:4380:93a1","2600:9000:20ea:4e00:3:7003:4380:93a1"],"ttl":60,"via":"Cloudflare","cname":["dnb3askdf6ry.cloudfront.net"]},"verdict":"dual-stack"}},"readiness":{"grade":"D","summary":"The website has no IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"fail","detail":"gps.gov has no AAAA record."},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.gps.gov has 4 IPv6 addresses and answers on every one we tested (4 more not tested).","addresses":[{"address":"2600:9000:20ea:3600:3:7003:4380:93a1","result":"answers","port":443},{"address":"2600:9000:20ea:f800:3:7003:4380:93a1","result":"answers","port":443},{"address":"2600:9000:20ea:a200:3:7003:4380:93a1","result":"answers","port":443},{"address":"2600:9000:20ea:9600:3:7003:4380:93a1","result":"answers","port":443},{"address":"2600:9000:20ea:f000:3:7003:4380:93a1","result":"not tested"},{"address":"2600:9000:20ea:f200:3:7003:4380:93a1","result":"not tested"},{"address":"2600:9000:20ea:9200:3:7003:4380:93a1","result":"not tested"},{"address":"2600:9000:20ea:4e00:3:7003:4380:93a1","result":"not tested"}]},{"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":"alt1.aspmx.l.google.com","ipv6":true},{"host":"alt2.aspmx.l.google.com","ipv6":true},{"host":"alt3.aspmx.l.google.com","ipv6":true},{"host":"alt4.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":"ns-01.noaa.gov","ipv6":true},{"host":"ns-02.noaa.gov","ipv6":true},{"host":"ns-03.noaa.gov","ipv6":true}]}]},"receiptId":"X4xOwD-7XG","reused":true,"measuredAt":"2026-11-15T15:54:34.442Z"}