CNCF · Domain Security

Cncf Domain Security

Domain security

Domain security posture for CNCF, probed live across 2 host(s) and 1 registrable domain(s). 2 host(s) serve HTTPS (up to TLSv1.3); 2 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC present (p=none).

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Transport & Host Security

www.cncf.io
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 29 04:32:56 2026 GMT
landscape.cncf.io
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Oct 29 23:59:59 2026 GMT

Domain (DNS/Email) Security

cncf.io
DNSSEC: no · SPF: yes · DMARC: yes (p=none) · CAA: none

Source

Domain Security

cncf-domain-security.yml Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.cncf.io
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 29 04:32:56 2026 GMT
  hsts: true
  hsts_max_age: 31622400
- host: landscape.cncf.io
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct 29 23:59:59 2026 GMT
  hsts: true
  hsts_max_age: 31536000
domains:
- domain: cncf.io
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: none