Flatcar Container Linux · Domain Security

Flatcar Container Linux Domain Security

Domain security

Domain security posture for Flatcar Container Linux, probed live across 2 host(s) and 2 registrable domain(s). 1 host(s) serve HTTPS (up to TLSv1.3); 1 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC absent.

Cloud NativeContainersImmutable InfrastructureIncubatingLinuxOperating System

Transport & Host Security

www.flatcar.org
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 19 07:02:28 2026 GMT
nebraska.flatcar-linux.org
HTTPS: no · HSTS: no

Domain (DNS/Email) Security

flatcar.org
DNSSEC: no · SPF: yes · DMARC: no · CAA: none
flatcar-linux.org
DNSSEC: no · SPF: no · DMARC: no · 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.flatcar.org
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 19 07:02:28 2026 GMT
  hsts: true
  hsts_max_age: 10886400
- host: nebraska.flatcar-linux.org
  https: false
domains:
- domain: flatcar.org
  dnssec: false
  caa: []
  spf: true
  dmarc: false
- domain: flatcar-linux.org
  dnssec: false
  caa: []
  spf: false
  dmarc: false