{"kind":"host","input":"stanford.edu","report":{"host":"stanford.edu","checkedAt":"2026-10-31T07:32:42.941Z","a":{"status":"found","values":["171.67.215.200"],"ttl":1800,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2607:f6d0:0:925a::ab43:d7c8"],"ttl":1800,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.stanford.edu","a":{"status":"found","values":["3.33.186.135","15.197.167.90"],"ttl":300,"via":"Cloudflare","cname":["stanford.netlifyglobalcdn.com"]},"aaaa":{"status":"found","values":["2600:1f18:16e:df01::1f5","2600:1f18:16e:df01::1f6"],"ttl":20,"via":"Cloudflare","cname":["stanford.netlifyglobalcdn.com"]},"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":"stanford.edu has an AAAA record and answers on it.","addresses":[{"address":"2607:f6d0:0:925a::ab43:d7c8","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.stanford.edu has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2600:1f18:16e:df01::1f5","result":"answers","port":443},{"address":"2600:1f18:16e:df01::1f6","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":"mxa-00000d07.gslb.pphosted.com","ipv6":false},{"host":"mxb-00000d07.gslb.pphosted.com","ipv6":false}]},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"6 of 6 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"ns5.dnsmadeeasy.com","ipv6":true},{"host":"ns6.dnsmadeeasy.com","ipv6":true},{"host":"ns7.dnsmadeeasy.com","ipv6":true},{"host":"argus.stanford.edu","ipv6":true},{"host":"atalante.stanford.edu","ipv6":true},{"host":"avallone.stanford.edu","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://stanford.edu/","address":"2607:f6d0:0:925a::ab43:d7c8","status":301,"tls":"valid"},{"url":"https://www.stanford.edu/","address":"2600:1f18:16e:df01::1f5","status":200,"tls":"valid"}]},"receiptId":"zBgIlVUqVT"}