Open Library · Domain Security

Open Library Domain Security

Domain security

Domain security posture for Open Library, probed live across 2 host(s) and 1 registrable domain(s). 2 host(s) serve HTTPS (up to TLSv1.3); 0 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF absent, DMARC absent.

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Transport & Host Security

openlibrary.org
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 28 23:05:19 2026 GMT
covers.openlibrary.org
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 17 23:08:21 2026 GMT

Domain (DNS/Email) Security

openlibrary.org
DNSSEC: no · SPF: no · DMARC: no · CAA: none

Source

Domain Security

open-library-domain-security.yml Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: openlibrary.org
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 28 23:05:19 2026 GMT
  hsts: false
- host: covers.openlibrary.org
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 17 23:08:21 2026 GMT
  hsts: false
domains:
- domain: openlibrary.org
  dnssec: false
  caa: []
  spf: false
  dmarc: false