Sterling · Domain Security

Sterling Check Domain Security

Domain security

Domain security posture for Sterling, probed live across 3 host(s) and 2 registrable domain(s). 2 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

www.sterlingcheck.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 2 11:19:50 2026 GMT
apidocs.sterlingcheck.app
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 19 17:53:07 2026 GMT
api.sterlingcheck.app
HTTPS: no · HSTS: no

Domain (DNS/Email) Security

sterlingcheck.com
DNSSEC: yes · SPF: yes · DMARC: yes (p=reject) · CAA: none
sterlingcheck.app
DNSSEC: yes · 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: www.sterlingcheck.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep  2 11:19:50 2026 GMT
  hsts: true
  hsts_max_age: 63072000
- host: apidocs.sterlingcheck.app
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 19 17:53:07 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: api.sterlingcheck.app
  https: false
domains:
- domain: sterlingcheck.com
  dnssec: true
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject
- domain: sterlingcheck.app
  dnssec: true
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject