Polkadot · Domain Security

Polkadot Domain Security

Domain security

Domain security posture for Polkadot, probed live across 3 host(s) and 2 registrable domain(s). 3 host(s) serve HTTPS (up to TLSv1.3); 0 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC present (p=reject).

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Transport & Host Security

polkadot.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 13 02:58:49 2026 GMT
support.subscan.io
HTTPS: yes · TLS: TLSv1.2 · HSTS: no · cert expires: Aug 17 00:01:50 2026 GMT
polkadot.api.subscan.io
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Aug 21 06:51:20 2026 GMT

Domain (DNS/Email) Security

polkadot.com
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: none
subscan.io
DNSSEC: no · SPF: yes · DMARC: yes (p=quarantine) · 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: polkadot.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 13 02:58:49 2026 GMT
  hsts: false
- host: support.subscan.io
  https: true
  tls_version: TLSv1.2
  cert_expires: Aug 17 00:01:50 2026 GMT
  hsts: false
- host: polkadot.api.subscan.io
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 21 06:51:20 2026 GMT
  hsts: null
domains:
- domain: polkadot.com
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject
- domain: subscan.io
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: quarantine