{"kind":"host","input":"nist.gov","report":{"host":"nist.gov","checkedAt":"2026-10-31T10:23:27.672Z","a":{"status":"found","values":["172.65.90.26","172.65.90.27","172.65.90.24","172.65.90.25"],"ttl":216,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:78::90:0:180","2606:4700:78::90:0:181","2606:4700:78::90:0:182","2606:4700:78::90:0:183"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.nist.gov","a":{"status":"found","values":["172.65.90.24","172.65.90.25","172.65.90.26","172.65.90.27"],"ttl":123,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:78::90:0:181","2606:4700:78::90:0:182","2606:4700:78::90:0:183","2606:4700:78::90:0:180"],"ttl":25,"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":"nist.gov has 4 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:78::90:0:180","result":"answers","port":443},{"address":"2606:4700:78::90:0:181","result":"answers","port":443},{"address":"2606:4700:78::90:0:182","result":"answers","port":443},{"address":"2606:4700:78::90:0:183","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.nist.gov has 4 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:78::90:0:181","result":"answers","port":443},{"address":"2606:4700:78::90:0:182","result":"answers","port":443},{"address":"2606:4700:78::90:0:183","result":"answers","port":443},{"address":"2606:4700:78::90:0:180","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"nist-gov.mail.protection.outlook.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":"gold.foundationdns.com","ipv6":true},{"host":"gold.foundationdns.net","ipv6":true},{"host":"gold.foundationdns.org","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://nist.gov/","address":"2606:4700:78::90:0:180","status":301,"tls":"valid"},{"url":"https://www.nist.gov/","address":"2606:4700:78::90:0:181","status":200,"tls":"valid"}]},"receiptId":"1lHQ6bLojv"}