Zscaler · Domain Security

Zscaler Domain Security

Domain security

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

Cloud SecurityZero TrustSASENetwork SecuritySWG

Transport & Host Security

www.zscaler.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Feb 24 23:59:59 2027 GMT
help.zscaler.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Oct 2 23:59:59 2026 GMT
zsapi.zscaler.net
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Nov 28 23:59:59 2026 GMT

Domain (DNS/Email) Security

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

Source

Domain Security

zscaler-domain-security.yml Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.zscaler.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Feb 24 23:59:59 2027 GMT
  hsts: true
  hsts_max_age: 31536000
- host: help.zscaler.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  2 23:59:59 2026 GMT
  hsts: true
  hsts_max_age: 63072000
- host: zsapi.zscaler.net
  https: true
  tls_version: TLSv1.3
  cert_expires: Nov 28 23:59:59 2026 GMT
  hsts: null
domains:
- domain: zscaler.com
  dnssec: false
  caa:
  - 0 issue "digicert.com"
  - 0 issue "amazon.com"
  spf: true
  dmarc: true
  dmarc_policy: reject
- domain: zscaler.net
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject