Clerk · Domain Security

Clerk Com Domain Security

Domain security

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

AuthenticationAuthorizationB2B SaaSCIAMIdentity ManagementMFAOAuthOpenID ConnectOrganizationsPasskeysSAMLSecuritySessionsSSOUser Management

Transport & Host Security

clerk.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Oct 9 02:08:46 2026 GMT
api.clerk.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Aug 25 15:39:49 2026 GMT
api.clerk.dev
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 30 18:43:13 2026 GMT

Domain (DNS/Email) Security

clerk.com
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: none
clerk.dev
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: none

Source

Domain Security

Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: clerk.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  9 02:08:46 2026 GMT
  hsts: true
  hsts_max_age: 63072000
- host: api.clerk.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 25 15:39:49 2026 GMT
  hsts: null
- host: api.clerk.dev
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 30 18:43:13 2026 GMT
  hsts: null
domains:
- domain: clerk.com
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject
- domain: clerk.dev
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject