{"kind":"host","input":"branch.io","report":{"host":"branch.io","checkedAt":"2026-10-31T07:07:32.397Z","a":{"status":"found","values":["52.85.193.23","52.85.193.101","52.85.193.50","52.85.193.107"],"ttl":60,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2600:9000:215a:a00:e:6c93:2e80:93a1","2600:9000:215a:6c00:e:6c93:2e80:93a1","2600:9000:215a:c800:e:6c93:2e80:93a1","2600:9000:215a:a600:e:6c93:2e80:93a1","2600:9000:215a:ee00:e:6c93:2e80:93a1","2600:9000:215a:4200:e:6c93:2e80:93a1","2600:9000:215a:c200:e:6c93:2e80:93a1","2600:9000:215a:f400:e:6c93:2e80:93a1"],"ttl":60,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.branch.io","a":{"status":"found","values":["141.193.213.21","141.193.213.20"],"ttl":300,"via":"Cloudflare","cname":["aeqnlksja9ay.wpeproxy.com"]},"aaaa":{"status":"absent","via":"Cloudflare","cname":["aeqnlksja9ay.wpeproxy.com"]},"verdict":"ipv4-only"}},"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":"branch.io has 4 IPv6 addresses and answers on every one we tested (4 more not tested).","addresses":[{"address":"2600:9000:215a:a00:e:6c93:2e80:93a1","result":"answers","port":443},{"address":"2600:9000:215a:6c00:e:6c93:2e80:93a1","result":"answers","port":443},{"address":"2600:9000:215a:c800:e:6c93:2e80:93a1","result":"answers","port":443},{"address":"2600:9000:215a:a600:e:6c93:2e80:93a1","result":"answers","port":443},{"address":"2600:9000:215a:ee00:e:6c93:2e80:93a1","result":"not tested"},{"address":"2600:9000:215a:4200:e:6c93:2e80:93a1","result":"not tested"},{"address":"2600:9000:215a:c200:e:6c93:2e80:93a1","result":"not tested"},{"address":"2600:9000:215a:f400:e:6c93:2e80:93a1","result":"not tested"}]},{"key":"www","label":"www over IPv6","status":"fail","detail":"www.branch.io has no AAAA record."},{"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":"aspmx2.googlemail.com","ipv6":true},{"host":"aspmx3.googlemail.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":"4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"ns-1091.awsdns-08.org","ipv6":true},{"host":"ns-1809.awsdns-34.co.uk","ipv6":true},{"host":"ns-236.awsdns-29.com","ipv6":true},{"host":"ns-991.awsdns-59.net","ipv6":true}]}]},"https":{"status":"fail","problem":"redirect-no-ipv6","summary":"Redirects to www.branch.io, which has no IPv6 address — so IPv6 visitors end up needing IPv4 after all.","hops":[{"url":"https://branch.io/","address":"2600:9000:215a:a00:e:6c93:2e80:93a1","status":301,"tls":"valid"},{"url":"https://www.branch.io/","note":"redirects to www.branch.io, which has no IPv6 address"}]},"receiptId":"kF72DBikRT"}