API Style Guides · Domain Security

Style Guides Domain Security

Domain security

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

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Transport & Host Security

google.aip.dev
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 28 12:17:49 2026 GMT
opensource.zalando.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 28 21:17:50 2026 GMT
developer.atlassian.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Jan 1 23:59:59 2027 GMT

Domain (DNS/Email) Security

aip.dev
DNSSEC: no · SPF: no · DMARC: no · CAA: none
zalando.com
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: none

Source

Domain Security

style-guides-domain-security.yml Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: google.aip.dev
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 28 12:17:49 2026 GMT
  hsts: true
  hsts_max_age: 31556952
- host: opensource.zalando.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 28 21:17:50 2026 GMT
  hsts: false
- host: developer.atlassian.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Jan  1 23:59:59 2027 GMT
  hsts: true
  hsts_max_age: 63072000
domains:
- domain: aip.dev
  dnssec: false
  caa: []
  spf: false
  dmarc: false
- domain: zalando.com
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject