{"kind":"host","input":"tacstack.org","report":{"host":"tacstack.org","checkedAt":"2026-11-13T22:35:28.915Z","a":{"status":"found","values":["172.67.168.178","104.21.79.19"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:3036::6815:4f13","2606:4700:3030::ac43:a8b2"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.tacstack.org","a":{"status":"found","values":["172.67.168.178","104.21.79.19"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:3036::6815:4f13","2606:4700:3030::ac43:a8b2"],"ttl":300,"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":"tacstack.org has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:3036::6815:4f13","result":"answers","port":443},{"address":"2606:4700:3030::ac43:a8b2","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.tacstack.org has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:3036::6815:4f13","result":"answers","port":443},{"address":"2606:4700:3030::ac43:a8b2","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"aspmx.l.google.com","ipv6":true},{"host":"alt3.aspmx.l.google.com","ipv6":true},{"host":"alt4.aspmx.l.google.com","ipv6":true},{"host":"alt1.aspmx.l.google.com","ipv6":true},{"host":"alt2.aspmx.l.google.com","ipv6":true}]},{"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":"dolly.ns.cloudflare.com","ipv6":true},{"host":"john.ns.cloudflare.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://tacstack.org/","address":"2606:4700:3036::6815:4f13","status":301,"tls":"valid"},{"url":"https://tacstack.net/","address":"2606:4700:20::681a:a8e","status":200,"tls":"valid"}]},"receiptId":"5FL34yMyam","reused":true,"measuredAt":"2026-11-13T22:35:29.169Z"}