{"kind":"host","input":"email.nyu.edu","report":{"host":"email.nyu.edu","checkedAt":"2026-11-03T04:29:45.153Z","a":{"status":"found","values":["18.154.227.85","18.154.227.118","18.154.227.34","18.154.227.17"],"ttl":60,"via":"Cloudflare","cname":["d2668vs6wprm13.cloudfront.net"]},"aaaa":{"status":"found","values":["2600:9000:2501:7200:16:2450:51c0:93a1","2600:9000:2501:9800:16:2450:51c0:93a1","2600:9000:2501:4a00:16:2450:51c0:93a1","2600:9000:2501:e800:16:2450:51c0:93a1","2600:9000:2501:7000:16:2450:51c0:93a1","2600:9000:2501:d600:16:2450:51c0:93a1","2600:9000:2501:8400:16:2450:51c0:93a1","2600:9000:2501:c400:16:2450:51c0:93a1"],"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":"email.nyu.edu has 4 IPv6 addresses and answers on every one we tested (4 more not tested).","addresses":[{"address":"2600:9000:2501:7200:16:2450:51c0:93a1","result":"answers","port":443},{"address":"2600:9000:2501:9800:16:2450:51c0:93a1","result":"answers","port":443},{"address":"2600:9000:2501:4a00:16:2450:51c0:93a1","result":"answers","port":443},{"address":"2600:9000:2501:e800:16:2450:51c0:93a1","result":"answers","port":443},{"address":"2600:9000:2501:7000:16:2450:51c0:93a1","result":"not tested"},{"address":"2600:9000:2501:d600:16:2450:51c0:93a1","result":"not tested"},{"address":"2600:9000:2501:8400:16:2450:51c0:93a1","result":"not tested"},{"address":"2600:9000:2501:c400:16:2450:51c0:93a1","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":"ns2.nyu.org","ipv6":true},{"host":"ns1.nyu.net","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 4 redirects: HTTP 200.","hops":[{"url":"https://email.nyu.edu/","address":"2600:9000:2501:7200:16:2450:51c0:93a1","status":302,"tls":"valid"},{"url":"https://mail.google.com/a/nyu.edu","address":"2607:f8b0:4004:c1b::13","status":302,"tls":"valid"},{"url":"https://www.google.com/a/nyu.edu/ServiceLogin?service=mail&passive=true&continue=https://mail.google.com/mail/&ss=1&ltmpl=default&ltmplcache=2&emr=1&osid=1#","address":"2001:4860:482b:7700::","status":302,"tls":"valid"},{"url":"https://accounts.google.com/samlredirect?continue=https%3A%2F%2Fmail.google.com%2Fmail%2F&sso_profile=inboundSamlSsoProfiles%2F03a14e4u3zlpreo","address":"2607:f8b0:4004:c29::54","status":302,"tls":"valid"},{"url":"https://login.microsoftonline.com/665be5ef-3fc6-401b-b6c4-401a9d9c7b72/saml2?SAMLRequest=lZJfT8IwFMW/ytJ3tq6bgA0bWTAmS9QYQB98MaW7QJOunb0d/vn0jomKPmB8be/pOed3O5m%2B1DrYgUNlTUbikJIAjLSVMpuM3C0vB2MyzScoas0aXrR%2Ba%2Bbw1AL6oBMa5B83GWmd4VagQm5EDci95Ivi%2BoqzkPLGWW%2Bl1SQoEMH5zmpmDbY1uAW4nZJwN7/KyNb7BnkUCSltazyGG2s3GkJp62hv45qIJiJOIW2TN904sN0okuDSOgl9tIyshUYgQXmRkcchG7FVNYypoJ2OJsloxOjZeixW4woY7ZqWeCsQ1Q6%2BhYgtlAa9MD4jjLLhII4HNFnSlLNznp6FKaMPJLj/JNb1Iwc%2BvBe7YzCnuYhPGn2HWvjT4/sTVQ3W/SgH45V/Jfn/qU2i47hfy73pni8vbq1W8jUotLbPMwfCd2y8a%2BHviHEY/45YC6WLqnKASKL84PvzG%2BXv&RelayState=b.z6IDjUow3MzI3SkoxMzRINDAwTjQwNjY3NzIwTbNITLJISTUyMBCSzSgpKSi20tfPTczM0UvPz0_PSdVLzs8F8_UlGABr1RNr","address":"2603:1036:3000:f8::2","status":200,"tls":"valid"}]},"receiptId":"Cu56dKGfxz","reused":true,"measuredAt":"2026-11-03T04:29:45.706Z"}