generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.ussteel.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Jan 13 23:59:59 2027 GMT
  hsts: true
  hsts_max_age: 31536000
- host: steeltrack.ussteel.com
  https: false
domains:
- domain: ussteel.com
  dnssec: false
  caa:
  - ;; connection timed out; no servers could be reached
  spf: true
  dmarc: true
  dmarc_policy: reject