{"kind":"host","input":"backstack.app","report":{"host":"backstack.app","checkedAt":"2026-11-11T20:46:53.980Z","a":{"status":"found","values":["104.21.59.130","172.67.177.133"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700:3032::6815:3b82","2606:4700:3036::ac43:b185"],"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":"backstack.app has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700:3032::6815:3b82","result":"answers","port":443},{"address":"2606:4700:3036::ac43:b185","result":"answers","port":443}]},{"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":"2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"bob.ns.cloudflare.com","ipv6":true},{"host":"isla.ns.cloudflare.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://backstack.app/","address":"2606:4700:3032::6815:3b82","status":302,"tls":"valid"},{"url":"https://technoviking.cloudflareaccess.com/cdn-cgi/access/login/backstack.app?kid=30fb18ab4d3ea51bd28480eb83f756360c4b98b6bb92c538fb3cbbf5cc05e70f&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjE3YzI2NzhlMDIwZjI2MTk1YjE5MmVmMmUxMmI5OGQ4NTY5ZDllMDZjNjhlZWRkNThlZDgyOWE5NjczZDY1M2YifQ.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.sr5ElN23i88xd0GQBTNiDoWd4VcpmDb30bYfPPRYG4hEbTgyk24xSrAjRUD3WGO0UpEQW3FeMPE5UazT3Qkqdh3awFchB74RYHpa8Ko_J-LzjLM0FhyOO99gqHXt0VP25YsfndDkcGKE17fN1QAmcE5yO2ZrNC0UizvpAKCo11b84TJYVf4jwaZHvOUJ0D1-u97X7N2TnkMhZrpqUzkNcRD1j-q3cU_NaIzqJ2PzqC6Cnl1dZgSAwyguiSTh4yQanKIXLxn1wvyADHvgrtGCku8zIPkrHxJrB_ZJK4sMlF7C_b0ApaTgvszPpmg2rvaspOAYjqPO-7Ia99LZ-9F9gw&redirect_url=%2F","address":"2606:4700:300a::6813:c31d","status":200,"tls":"valid"}]},"receiptId":"9XrNOG87By","reused":true,"measuredAt":"2026-11-11T20:46:54.128Z"}