Cloudflare · Domain Security

Cloudflare Domain Security

Domain security

Domain security posture for Cloudflare, probed live across 3 host(s) and 1 registrable domain(s). 3 host(s) serve HTTPS (up to TLSv1.3); 3 advertise HSTS. Email/DNS controls: DNSSEC present, SPF present, DMARC present (p=reject).

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Transport & Host Security

developers.cloudflare.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 27 16:43:14 2026 GMT
www.cloudflare.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Oct 4 07:46:56 2026 GMT
api.cloudflare.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 13 23:15:42 2026 GMT

Domain (DNS/Email) Security

cloudflare.com
DNSSEC: yes · SPF: yes · DMARC: yes (p=reject) · CAA: yes

Source

Domain Security

Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: developers.cloudflare.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 27 16:43:14 2026 GMT
  hsts: true
  hsts_max_age: 15552000
- host: www.cloudflare.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  4 07:46:56 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: api.cloudflare.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 13 23:15:42 2026 GMT
  hsts: true
  hsts_max_age: 15552000
domains:
- domain: cloudflare.com
  dnssec: true
  caa:
  - 0 issuewild "comodoca.com"
  - 0 issuewild "digicert.com; cansignhttpexchanges=yes"
  - 0 issuewild "letsencrypt.org"
  - 0 issuewild "pki.goog; cansignhttpexchanges=yes"
  - 0 issuewild "ssl.com"
  - 0 iodef "mailto:tls-abuse@cloudflare.com"
  spf: true
  dmarc: true
  dmarc_policy: reject