{"kind":"host","input":"uiuc.edu","report":{"host":"uiuc.edu","checkedAt":"2026-11-02T09:02:04.978Z","a":{"status":"found","values":["64.236.243.124"],"ttl":3600,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2a01:111:f100:1002::4134:dc6d"],"ttl":3600,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.uiuc.edu","a":{"status":"found","values":["64.236.243.124"],"ttl":3600,"via":"Cloudflare","cname":["illinois.edu"]},"aaaa":{"status":"found","values":["2a01:111:f100:1002::4134:dc6d"],"ttl":3600,"via":"Cloudflare","cname":["illinois.edu"]},"verdict":"dual-stack"}},"readiness":{"grade":"B","summary":"Works over IPv6, with one gap: its mail servers lack IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"pass","detail":"uiuc.edu has an AAAA record and answers on it.","addresses":[{"address":"2a01:111:f100:1002::4134:dc6d","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.uiuc.edu has an AAAA record and answers on it.","addresses":[{"address":"2a01:111:f100:1002::4134:dc6d","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"fail","detail":"None of the mail servers has an AAAA record.","hosts":[{"host":"incoming-relays.illinois.edu","ipv6":false}]},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"3 of 3 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"dns2.illinois.edu","ipv6":true},{"host":"dns3.illinois.edu","ipv6":true},{"host":"dns1.illinois.edu","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://uiuc.edu/","address":"2a01:111:f100:1002::4134:dc6d","status":301,"tls":"valid"},{"url":"https://illinois.edu/","address":"2a01:111:f100:1002::4134:dc6d","status":200,"tls":"valid"}]},"receiptId":"tZzXIcFQXD","reused":true,"measuredAt":"2026-11-02T09:02:06.140Z"}