generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.w3.org
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  7 03:48:25 2026 GMT
  hsts: true
  hsts_max_age: 15552000
- host: api.w3.org
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  7 03:48:25 2026 GMT
  hsts: null
- host: html.spec.whatwg.org
  https: true
  tls_version: TLSv1.2
  cert_expires: Aug 23 02:20:30 2026 GMT
  hsts: true
  hsts_max_age: 63072000
domains:
- domain: w3.org
  dnssec: false
  caa:
  - 0 issue "sectigo.com"
  - 0 issue "ssl.com"
  - 0 issuewild "comodoca.com"
  - 0 issuewild "digicert.com; cansignhttpexchanges=yes"
  - 0 issuewild "letsencrypt.org"
  - 0 issuewild "pki.goog; cansignhttpexchanges=yes"
  spf: true
  dmarc: true
  dmarc_policy: reject
- domain: whatwg.org
  dnssec: false
  caa: []
  spf: true
  dmarc: false