Wikipedia / MediaWiki · Domain Security

Wikipedia Domain Security

Domain security

Domain security posture for Wikipedia / MediaWiki, probed live across 3 host(s) and 2 registrable domain(s). 3 host(s) serve HTTPS (up to TLSv1.3); 3 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC present (p=reject).

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Transport & Host Security

www.wikipedia.org
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 4 20:06:43 2026 GMT
www.mediawiki.org
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 4 20:06:43 2026 GMT
en.wikipedia.org
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 4 20:06:43 2026 GMT

Domain (DNS/Email) Security

wikipedia.org
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: yes
mediawiki.org
DNSSEC: no · 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: www.wikipedia.org
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep  4 20:06:43 2026 GMT
  hsts: true
  hsts_max_age: 106384710
- host: www.mediawiki.org
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep  4 20:06:43 2026 GMT
  hsts: true
  hsts_max_age: 106384710
- host: en.wikipedia.org
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep  4 20:06:43 2026 GMT
  hsts: true
  hsts_max_age: 106384710
domains:
- domain: wikipedia.org
  dnssec: false
  caa:
  - 0 issue "pki.goog"
  - 0 iodef "mailto:dns-admin@wikimedia.org"
  - 0 issue "letsencrypt.org"
  spf: true
  dmarc: true
  dmarc_policy: reject
- domain: mediawiki.org
  dnssec: false
  caa:
  - 0 issue "letsencrypt.org"
  - 0 issue "pki.goog"
  - 0 iodef "mailto:dns-admin@wikimedia.org"
  spf: true
  dmarc: true
  dmarc_policy: reject