fly-io · Domain Security

Fly Io Domain Security

Domain security

Domain security posture for fly-io, 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=quarantine).

Transport & Host Security

fly.io
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Oct 2 11:21:26 2026 GMT
api.machines.dev
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Aug 25 23:27:35 2026 GMT
api.fly.io
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Aug 11 11:20:50 2026 GMT

Domain (DNS/Email) Security

fly.io
DNSSEC: no · SPF: yes · DMARC: yes (p=quarantine) · CAA: none
machines.dev
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: fly.io
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  2 11:21:26 2026 GMT
  hsts: false
- host: api.machines.dev
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 25 23:27:35 2026 GMT
  hsts: null
- host: api.fly.io
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 11 11:20:50 2026 GMT
  hsts: null
domains:
- domain: fly.io
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: quarantine
- domain: machines.dev
  dnssec: false
  caa: []
  spf: false
  dmarc: false