{"kind":"host","input":"wunderground.com","report":{"host":"wunderground.com","checkedAt":"2026-11-01T09:41:02.096Z","a":{"status":"found","values":["23.1.48.53"],"ttl":6,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2600:1408:c400:38e::2e03","2600:1408:c400:381::2e03"],"ttl":20,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.wunderground.com","a":{"status":"found","values":["23.1.48.53"],"ttl":1,"via":"Cloudflare","cname":["www.wunderground.com.edgekey.net","e11779.dscj.akamaiedge.net"]},"aaaa":{"status":"found","values":["2600:1408:c400:381::2e03","2600:1408:c400:38e::2e03"],"ttl":20,"via":"Cloudflare","cname":["www.wunderground.com.edgekey.net","e11779.dscj.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":"wunderground.com has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2600:1408:c400:38e::2e03","result":"answers","port":443},{"address":"2600:1408:c400:381::2e03","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"pass","detail":"www.wunderground.com has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2600:1408:c400:381::2e03","result":"answers","port":443},{"address":"2600:1408:c400:38e::2e03","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"pass","detail":"Every mail server has an AAAA record.","hosts":[{"host":"aspmx.l.google.com","ipv6":true},{"host":"aspmx3.googlemail.com","ipv6":true},{"host":"aspmx2.googlemail.com","ipv6":true},{"host":"alt2.aspmx.l.google.com","ipv6":true},{"host":"alt1.aspmx.l.google.com","ipv6":true}]},{"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":"a11-66.akam.net","ipv6":true},{"host":"a10-65.akam.net","ipv6":true},{"host":"a24-65.akam.net","ipv6":true},{"host":"a13-67.akam.net","ipv6":true},{"host":"a1-70.akam.net","ipv6":true},{"host":"a14-64.akam.net","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.","hops":[{"url":"https://wunderground.com/","address":"2600:1408:c400:38e::2e03","status":301,"tls":"valid"},{"url":"https://www.wunderground.com/","address":"2600:1408:c400:381::2e03","status":200,"tls":"valid"}]},"receiptId":"C4dYW7qkxD","reused":true,"measuredAt":"2026-11-01T09:41:02.252Z"}