{"kind":"host","input":"doi.org","report":{"host":"doi.org","checkedAt":"2026-10-30T22:13:03.078Z","a":{"status":"found","values":["104.26.4.132","104.26.5.132","172.67.69.3"],"ttl":207,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:20::681a:584","2606:4700:20::ac43:4503","2606:4700:20::681a:484"],"ttl":68,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.doi.org","a":{"status":"found","values":["104.26.5.132","172.67.69.3","104.26.4.132"],"ttl":125,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:20::681a:584","2606:4700:20::ac43:4503","2606:4700:20::681a:484"],"ttl":32,"via":"Cloudflare","cname":[]},"verdict":"dual-stack"}},"readiness":{"grade":"B","summary":"Works over IPv6, with one gap: its mail servers lack IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"pass","detail":"doi.org has 3 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:20::681a:584","result":"answers","port":443},{"address":"2606:4700:20::ac43:4503","result":"answers","port":443},{"address":"2606:4700:20::681a:484","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.doi.org has 3 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:20::681a:584","result":"answers","port":443},{"address":"2606:4700:20::ac43:4503","result":"answers","port":443},{"address":"2606:4700:20::681a:484","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"fail","detail":"None of the mail servers has an AAAA record.","hosts":[{"host":"mx.zoho.eu","ipv6":false},{"host":"mx2.zoho.eu","ipv6":false},{"host":"mx3.zoho.eu","ipv6":false}]},{"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":"josh.ns.cloudflare.com","ipv6":true},{"host":"zita.ns.cloudflare.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://doi.org/","address":"2606:4700:20::681a:584","status":301,"tls":"valid"},{"url":"https://www.doi.org/","address":"2606:4700:20::681a:584","status":200,"tls":"valid"}]},"receiptId":"1ZQCSFuxFe"}