{"kind":"host","input":"si.edu","report":{"host":"si.edu","checkedAt":"2026-10-31T19:23:37.518Z","a":{"status":"found","values":["160.111.244.22"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only","www":{"host":"www.si.edu","a":{"status":"found","values":["104.18.1.107","104.18.0.107"],"ttl":15,"via":"Cloudflare","cname":["www.si.edu.cdn.cloudflare.net"]},"aaaa":{"status":"found","values":["2606:4700::6812:6b","2606:4700::6812:16b"],"ttl":60,"via":"Cloudflare","cname":["www.si.edu.cdn.cloudflare.net"]},"verdict":"dual-stack"}},"readiness":{"grade":"D","summary":"The website has no IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"fail","detail":"si.edu has no AAAA record."},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.si.edu has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700::6812:6b","result":"answers","port":443},{"address":"2606:4700::6812:16b","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"si-edu.mail.protection.outlook.com","ipv6":true}]},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"6 of 6 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"a1-88.akam.net","ipv6":true},{"host":"a9-64.akam.net","ipv6":true},{"host":"a11-67.akam.net","ipv6":true},{"host":"a24-67.akam.net","ipv6":true},{"host":"a26-66.akam.net","ipv6":true},{"host":"a28-65.akam.net","ipv6":true}]}]},"receiptId":"2pwz8aCPpB","reused":true,"measuredAt":"2026-10-31T19:23:37.587Z"}