{"kind":"host","input":"epa.gov","report":{"host":"epa.gov","checkedAt":"2026-10-31T22:23:02.759Z","a":{"status":"found","values":["134.67.21.34"],"ttl":2282,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2620:117:506f:15::f022"],"ttl":3600,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.epa.gov","a":{"status":"found","values":["18.67.76.94","18.67.76.78","18.67.76.85","18.67.76.27"],"ttl":26,"via":"Cloudflare","cname":["d32i4z0dxazdtp.cloudfront.net"]},"aaaa":{"status":"found","values":["2600:9000:2305:e400:10:f3db:af40:93a1","2600:9000:2305:e200:10:f3db:af40:93a1","2600:9000:2305:fa00:10:f3db:af40:93a1","2600:9000:2305:ea00:10:f3db:af40:93a1","2600:9000:2305:7000:10:f3db:af40:93a1","2600:9000:2305:8c00:10:f3db:af40:93a1","2600:9000:2305:9200:10:f3db:af40:93a1","2600:9000:2305:ba00:10:f3db:af40:93a1"],"ttl":60,"via":"Cloudflare","cname":["d32i4z0dxazdtp.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":"epa.gov has an AAAA record and answers on it.","addresses":[{"address":"2620:117:506f:15::f022","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.epa.gov has 4 IPv6 addresses and answers on every one we tested (4 more not tested).","addresses":[{"address":"2600:9000:2305:e400:10:f3db:af40:93a1","result":"answers","port":443},{"address":"2600:9000:2305:e200:10:f3db:af40:93a1","result":"answers","port":443},{"address":"2600:9000:2305:fa00:10:f3db:af40:93a1","result":"answers","port":443},{"address":"2600:9000:2305:ea00:10:f3db:af40:93a1","result":"answers","port":443},{"address":"2600:9000:2305:7000:10:f3db:af40:93a1","result":"not tested"},{"address":"2600:9000:2305:8c00:10:f3db:af40:93a1","result":"not tested"},{"address":"2600:9000:2305:9200:10:f3db:af40:93a1","result":"not tested"},{"address":"2600:9000:2305:ba00:10:f3db:af40:93a1","result":"not tested"}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"usepa.mail.protection.outlook.com","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":"dcns1.epa.gov","ipv6":true},{"host":"dcns2.epa.gov","ipv6":true},{"host":"nccns1.epa.gov","ipv6":true},{"host":"nccns2.epa.gov","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://epa.gov/","address":"2620:117:506f:15::f022","status":301,"tls":"valid"},{"url":"https://www.epa.gov/","address":"2600:9000:2305:e400:10:f3db:af40:93a1","status":200,"tls":"valid"}]},"receiptId":"8A6OEzuo4G","reused":true,"measuredAt":"2026-10-31T22:23:02.924Z"}