Expo · Domain Security

Expo Domain Security

Domain security

Domain security posture for Expo, probed live across 3 host(s) and 1 registrable domain(s). 3 host(s) serve HTTPS (up to TLSv1.3); 2 advertise HSTS. Email/DNS controls: DNSSEC present, SPF present, DMARC present (p=quarantine).

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Transport & Host Security

expo.dev
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Oct 5 17:36:46 2026 GMT
docs.expo.dev
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 5 21:56:41 2026 GMT
api.expo.dev
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 26 07:36:36 2026 GMT

Domain (DNS/Email) Security

expo.dev
DNSSEC: yes · SPF: yes · DMARC: yes (p=quarantine) · CAA: yes

Source

Domain Security

expo-domain-security.yml Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: expo.dev
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  5 17:36:46 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: docs.expo.dev
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep  5 21:56:41 2026 GMT
  hsts: false
- host: api.expo.dev
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 26 07:36:36 2026 GMT
  hsts: true
  hsts_max_age: 31536000
domains:
- domain: expo.dev
  dnssec: true
  caa:
  - 0 issuewild "pki.goog; cansignhttpexchanges=yes"
  - 0 issuewild "ssl.com"
  - 0 issue "comodoca.com"
  - 0 issue "digicert.com; cansignhttpexchanges=yes"
  - 0 issue "letsencrypt.org"
  - 0 issue "pki.goog; cansignhttpexchanges=yes"
  spf: true
  dmarc: true
  dmarc_policy: quarantine