{"kind":"host","input":"sso.weather.gov","report":{"host":"sso.weather.gov","checkedAt":"2026-11-02T14:33:47.449Z","a":{"status":"found","values":["3.162.125.37","3.162.125.3","3.162.125.42","3.162.125.5"],"ttl":60,"via":"Cloudflare","cname":["d33akzp0t44xr5.cloudfront.net"]},"aaaa":{"status":"found","values":["2600:9000:2479:1600:14:6d76:f840:93a1","2600:9000:2479:f200:14:6d76:f840:93a1","2600:9000:2479:6600:14:6d76:f840:93a1","2600:9000:2479:2a00:14:6d76:f840:93a1","2600:9000:2479:600:14:6d76:f840:93a1","2600:9000:2479:1400:14:6d76:f840:93a1","2600:9000:2479:9400:14:6d76:f840:93a1","2600:9000:2479:7000:14:6d76:f840:93a1"],"ttl":60,"via":"Cloudflare","cname":["d33akzp0t44xr5.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":"sso.weather.gov has 4 IPv6 addresses and answers on every one we tested (4 more not tested).","addresses":[{"address":"2600:9000:2479:1600:14:6d76:f840:93a1","result":"answers","port":443},{"address":"2600:9000:2479:f200:14:6d76:f840:93a1","result":"answers","port":443},{"address":"2600:9000:2479:6600:14:6d76:f840:93a1","result":"answers","port":443},{"address":"2600:9000:2479:2a00:14:6d76:f840:93a1","result":"answers","port":443},{"address":"2600:9000:2479:600:14:6d76:f840:93a1","result":"not tested"},{"address":"2600:9000:2479:1400:14:6d76:f840:93a1","result":"not tested"},{"address":"2600:9000:2479:9400:14:6d76:f840:93a1","result":"not tested"},{"address":"2600:9000:2479:7000:14:6d76:f840:93a1","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":"6 of 6 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"a1-97.akam.net","ipv6":true},{"host":"a6-65.akam.net","ipv6":true},{"host":"a7-66.akam.net","ipv6":true},{"host":"a11-66.akam.net","ipv6":true},{"host":"a18-67.akam.net","ipv6":true},{"host":"a26-64.akam.net","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate: HTTP 404.","hops":[{"url":"https://sso.weather.gov/","address":"2600:9000:2479:1600:14:6d76:f840:93a1","status":404,"tls":"valid"}]},"receiptId":"bxZ818rX0U","reused":true,"measuredAt":"2026-11-02T14:33:47.510Z"}