{"kind":"host","input":"mail.nyu.edu","report":{"host":"mail.nyu.edu","checkedAt":"2026-11-04T10:23:31.994Z","a":{"status":"found","values":["108.138.85.68","108.138.85.103","108.138.85.129","108.138.85.55"],"ttl":60,"via":"Cloudflare","cname":["d1q5ku5vnwkd2k.cloudfront.net"]},"aaaa":{"status":"found","values":["2600:9000:2509:1e00:1:f7e2:cb00:93a1","2600:9000:2509:5c00:1:f7e2:cb00:93a1","2600:9000:2509:1000:1:f7e2:cb00:93a1","2600:9000:2509:8600:1:f7e2:cb00:93a1","2600:9000:2509:7e00:1:f7e2:cb00:93a1","2600:9000:2509:ce00:1:f7e2:cb00:93a1","2600:9000:2509:800:1:f7e2:cb00:93a1","2600:9000:2509:f800:1:f7e2:cb00:93a1"],"ttl":60,"via":"Cloudflare","cname":["d1q5ku5vnwkd2k.cloudfront.net"]},"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":"mail.nyu.edu has 4 IPv6 addresses and answers on every one we tested (4 more not tested).","addresses":[{"address":"2600:9000:2509:1e00:1:f7e2:cb00:93a1","result":"answers","port":443},{"address":"2600:9000:2509:5c00:1:f7e2:cb00:93a1","result":"answers","port":443},{"address":"2600:9000:2509:1000:1:f7e2:cb00:93a1","result":"answers","port":443},{"address":"2600:9000:2509:8600:1:f7e2:cb00:93a1","result":"answers","port":443},{"address":"2600:9000:2509:7e00:1:f7e2:cb00:93a1","result":"not tested"},{"address":"2600:9000:2509:ce00:1:f7e2:cb00:93a1","result":"not tested"},{"address":"2600:9000:2509:800:1:f7e2:cb00:93a1","result":"not tested"},{"address":"2600:9000:2509:f800:1:f7e2:cb00:93a1","result":"not tested"}]},{"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 3 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"ns4.nyu.edu","ipv6":false},{"host":"ns1.nyu.net","ipv6":true},{"host":"ns2.nyu.org","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate: HTTP 403.","hops":[{"url":"https://mail.nyu.edu/","address":"2600:9000:2509:1e00:1:f7e2:cb00:93a1","status":403,"tls":"valid"}]},"receiptId":"_FE7xaK8Sw","reused":true,"measuredAt":"2026-11-04T10:23:32.069Z"}