{"kind":"host","input":"adstocalendar.com","report":{"host":"adstocalendar.com","checkedAt":"2026-11-04T04:57:13.784Z","a":{"status":"found","values":["172.67.161.180","104.21.9.238"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:3033::6815:9ee","2606:4700:3037::ac43:a1b4"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.adstocalendar.com","a":{"status":"found","values":["172.67.161.180","104.21.9.238"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:3037::ac43:a1b4","2606:4700:3033::6815:9ee"],"ttl":300,"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":"adstocalendar.com has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:3033::6815:9ee","result":"answers","port":443},{"address":"2606:4700:3037::ac43:a1b4","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.adstocalendar.com has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:3037::ac43:a1b4","result":"answers","port":443},{"address":"2606:4700:3033::6815:9ee","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":"in1-smtp.messagingengine.com","ipv6":false},{"host":"in2-smtp.messagingengine.com","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":"marvin.ns.cloudflare.com","ipv6":true},{"host":"nelci.ns.cloudflare.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate: HTTP 200.","hops":[{"url":"https://adstocalendar.com/","address":"2606:4700:3033::6815:9ee","status":200,"tls":"valid"}]},"receiptId":"bsQWYwZKBa","reused":true,"measuredAt":"2026-11-04T04:57:13.861Z"}