OneSignal · Domain Security

Onesignal Domain Security

Domain security

Domain security posture for OneSignal, 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=reject).

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Transport & Host Security

onesignal.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 11 17:06:32 2026 GMT
documentation.onesignal.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 26 17:59:01 2026 GMT
api.onesignal.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 11 15:32:24 2026 GMT

Domain (DNS/Email) Security

onesignal.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: onesignal.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 11 17:06:32 2026 GMT
  hsts: true
  hsts_max_age: 15552000
- host: documentation.onesignal.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 26 17:59:01 2026 GMT
  hsts: true
  hsts_max_age: 63072000
- host: api.onesignal.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 11 15:32:24 2026 GMT
  hsts: null
domains:
- domain: onesignal.com
  dnssec: true
  caa:
  - 0 issue "comodoca.com"
  - 0 issue "digicert.com; cansignhttpexchanges=yes"
  - 0 issue "letsencrypt.org"
  - 0 issue "pki.goog; cansignhttpexchanges=yes"
  - 0 issue "ssl.com"
  - 0 issuewild "comodoca.com"
  spf: true
  dmarc: true
  dmarc_policy: reject