Crossref · Domain Security

Crossref Domain Security

Domain security

Domain security posture for Crossref, 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 present, DMARC present (p=none).

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Transport & Host Security

www.crossref.org
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Dec 30 23:59:59 2026 GMT
api.crossref.org
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Dec 30 23:59:59 2026 GMT

Domain (DNS/Email) Security

crossref.org
DNSSEC: no · SPF: yes · DMARC: yes (p=none) · CAA: yes

Source

Domain Security

Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.crossref.org
  https: true
  tls_version: TLSv1.3
  cert_expires: Dec 30 23:59:59 2026 GMT
  hsts: false
- host: api.crossref.org
  https: true
  tls_version: TLSv1.3
  cert_expires: Dec 30 23:59:59 2026 GMT
  hsts: false
domains:
- domain: crossref.org
  dnssec: false
  caa:
  - 0 issuewild "amazontrust.com"
  - 0 issuewild "letsencrypt.org"
  - 0 issue "amazontrust.com"
  - 0 issue "letsencrypt.org"
  spf: true
  dmarc: true
  dmarc_policy: none