zkSync · Domain Security

Zksync Domain Security

Domain security

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

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Transport & Host Security

zksync.io
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 26 14:03:09 2026 GMT
portal.zksync.io
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 12 17:32:24 2026 GMT
docs.zksync.io
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 29 23:47:34 2026 GMT

Domain (DNS/Email) Security

zksync.io
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: zksync.io
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 26 14:03:09 2026 GMT
  hsts: true
  hsts_max_age: 63072000
- host: portal.zksync.io
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 12 17:32:24 2026 GMT
  hsts: true
  hsts_max_age: 15552000
- host: docs.zksync.io
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 29 23:47:34 2026 GMT
  hsts: true
  hsts_max_age: 31556926
domains:
- domain: zksync.io
  dnssec: true
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject