{"kind":"host","input":"mit.edu","report":{"host":"mit.edu","checkedAt":"2026-10-30T21:27:57.951Z","a":{"status":"found","values":["23.48.184.61"],"ttl":20,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2600:1408:c400:f93::255e","2600:1408:c400:f8b::255e"],"ttl":20,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.mit.edu","a":{"status":"found","values":["23.49.179.66"],"ttl":20,"via":"Cloudflare","cname":["www.mit.edu.edgekey.net","e9566.dscb.akamaiedge.net"]},"aaaa":{"status":"found","values":["2600:1408:c400:f8b::255e","2600:1408:c400:f93::255e"],"ttl":20,"via":"Cloudflare","cname":["www.mit.edu.edgekey.net","e9566.dscb.akamaiedge.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":"mit.edu has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2600:1408:c400:f93::255e","result":"answers","port":443},{"address":"2600:1408:c400:f8b::255e","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.mit.edu has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2600:1408:c400:f8b::255e","result":"answers","port":443},{"address":"2600:1408:c400:f93::255e","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"mit-edu.mail.protection.outlook.com","ipv6":true}]},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"3 of 8 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"usw2.akam.net","ipv6":false},{"host":"asia1.akam.net","ipv6":false},{"host":"eur5.akam.net","ipv6":false},{"host":"use5.akam.net","ipv6":true},{"host":"ns1-37.akam.net","ipv6":true},{"host":"ns1-173.akam.net","ipv6":true},{"host":"use2.akam.net","ipv6":false},{"host":"asia2.akam.net","ipv6":false}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://mit.edu/","address":"2600:1408:c400:f93::255e","status":302,"tls":"valid"},{"url":"https://web.mit.edu/","address":"2600:1408:c400:f8b::255e","status":200,"tls":"valid"}]},"receiptId":"ENEZ5buCTv"}