{"kind":"host","input":"sites.nyu.edu","report":{"host":"sites.nyu.edu","checkedAt":"2026-11-03T05:17:20.922Z","a":{"status":"found","values":["18.154.227.85","18.154.227.34","18.154.227.17","18.154.227.118"],"ttl":60,"via":"Cloudflare","cname":["d2668vs6wprm13.cloudfront.net"]},"aaaa":{"status":"found","values":["2600:9000:2501:6a00:16:2450:51c0:93a1","2600:9000:2501:ea00:16:2450:51c0:93a1","2600:9000:2501:5200:16:2450:51c0:93a1","2600:9000:2501:8c00:16:2450:51c0:93a1","2600:9000:2501:a600:16:2450:51c0:93a1","2600:9000:2501:3000:16:2450:51c0:93a1","2600:9000:2501:2200:16:2450:51c0:93a1","2600:9000:2501:9400:16:2450:51c0:93a1"],"ttl":60,"via":"Cloudflare","cname":["d2668vs6wprm13.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":"sites.nyu.edu has 4 IPv6 addresses and answers on every one we tested (4 more not tested).","addresses":[{"address":"2600:9000:2501:6a00:16:2450:51c0:93a1","result":"answers","port":443},{"address":"2600:9000:2501:ea00:16:2450:51c0:93a1","result":"answers","port":443},{"address":"2600:9000:2501:5200:16:2450:51c0:93a1","result":"answers","port":443},{"address":"2600:9000:2501:8c00:16:2450:51c0:93a1","result":"answers","port":443},{"address":"2600:9000:2501:a600:16:2450:51c0:93a1","result":"not tested"},{"address":"2600:9000:2501:3000:16:2450:51c0:93a1","result":"not tested"},{"address":"2600:9000:2501:2200:16:2450:51c0:93a1","result":"not tested"},{"address":"2600:9000:2501:9400:16:2450:51c0:93a1","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 after 3 redirects: HTTP 200.","hops":[{"url":"https://sites.nyu.edu/","address":"2600:9000:2501:6a00:16:2450:51c0:93a1","status":302,"tls":"valid"},{"url":"https://sites.google.com/","address":"2607:f8b0:4004:c06::65","status":302,"tls":"valid"},{"url":"https://accounts.google.com/ServiceLogin?service=wise&passive=1209600&osid=1&continue=https://sites.google.com/&followup=https://sites.google.com/","address":"2607:f8b0:4004:c1b::54","status":302,"tls":"valid"},{"url":"https://accounts.google.com/v3/signin/identifier?continue=https://sites.google.com/&followup=https://sites.google.com/&osid=1&passive=1209600&service=wise&flowName=WebLiteSignIn&flowEntry=ServiceLogin&dsh=S2117583267:1793683042834136","address":"2607:f8b0:4004:c1b::54","status":200,"tls":"valid"}]},"receiptId":"j4kWFnznCv","reused":true,"measuredAt":"2026-11-03T05:17:22.919Z"}