{"kind":"host","input":"brown.edu","report":{"host":"brown.edu","checkedAt":"2026-11-02T16:56:34.186Z","a":{"status":"found","values":["128.148.252.217"],"ttl":30,"via":"Cloudflare","cname":[]},"aaaa":{"status":"absent","via":"Cloudflare","cname":[]},"verdict":"ipv4-only","www":{"host":"www.brown.edu","a":{"status":"found","values":["104.18.3.173","104.18.2.173"],"ttl":46,"via":"Cloudflare","cname":["www.brown.edu.cdn.cloudflare.net"]},"aaaa":{"status":"found","values":["2606:4700::6812:3ad","2606:4700::6812:2ad"],"ttl":152,"via":"Cloudflare","cname":["www.brown.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":"brown.edu has no AAAA record."},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.brown.edu has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700::6812:3ad","result":"answers","port":443},{"address":"2606:4700::6812:2ad","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"alt4.aspmx.l.google.com","ipv6":true},{"host":"alt3.aspmx.l.google.com","ipv6":true},{"host":"alt2.aspmx.l.google.com","ipv6":true},{"host":"alt1.aspmx.l.google.com","ipv6":true},{"host":"aspmx.l.google.com","ipv6":true}]},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"1 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"bru-ns1.brown.edu","ipv6":false},{"host":"bru-ns2.brown.edu","ipv6":false},{"host":"ns1.ucsb.edu","ipv6":true},{"host":"bru-ns3.brown.edu","ipv6":false}]}]},"receiptId":"N34Gucjobu","reused":true,"measuredAt":"2026-11-02T16:56:34.239Z"}