Flow · Domain Security

Flow Blockchain Domain Security

Domain security

Domain security posture for Flow, 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).

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Transport & Host Security

developers.flow.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 26 14:30:05 2026 GMT
rest-mainnet.onflow.org
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 20 12:20:54 2026 GMT
rest-testnet.onflow.org
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 4 16:45:40 2026 GMT

Domain (DNS/Email) Security

flow.com
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: none
onflow.org
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: developers.flow.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 26 14:30:05 2026 GMT
  hsts: true
  hsts_max_age: 63072000
- host: rest-mainnet.onflow.org
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 20 12:20:54 2026 GMT
  hsts: null
- host: rest-testnet.onflow.org
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep  4 16:45:40 2026 GMT
  hsts: null
domains:
- domain: flow.com
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject
- domain: onflow.org
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject