{"kind":"host","input":"www2.census.gov","report":{"host":"www2.census.gov","checkedAt":"2026-11-02T06:20:33.692Z","a":{"status":"found","values":["172.65.90.27","172.65.90.24","172.65.90.25","172.65.90.26"],"ttl":208,"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.www2.census.gov","a":{"status":"absent","via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"no-address"}},"readiness":{"grade":"B","summary":"Works over IPv6, with one gap: www doesn't fully work over IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"pass","detail":"www2.census.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":"fail","detail":"www.www2.census.gov has no AAAA record."},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"No MX records, so mail goes to the domain's own address (implicit MX). It has an AAAA record."},{"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":"blue.foundationdns.com","ipv6":true},{"host":"blue.foundationdns.net","ipv6":true},{"host":"blue.foundationdns.org","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate: HTTP 200.","hops":[{"url":"https://www2.census.gov/","address":"2606:4700:78::90:0:180","status":200,"tls":"valid"}]},"receiptId":"kEJ42fFEYj","reused":true,"measuredAt":"2026-11-02T06:20:33.770Z"}