Cornell University · Domain Security

Cornell Domain Security

Domain security

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

UniversityHigher EducationEducationIvy LeagueUnited StatesCourse CatalogLibraryResearch DataGeospatialIdentity Federation

Transport & Host Security

www.cornell.edu
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Nov 16 23:59:59 2026 GMT
classes.cornell.edu
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 19 23:59:59 2026 GMT
guides.library.cornell.edu
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Oct 8 12:10:15 2026 GMT

Domain (DNS/Email) Security

cornell.edu
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · 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.cornell.edu
  https: true
  tls_version: TLSv1.3
  cert_expires: Nov 16 23:59:59 2026 GMT
  hsts: false
- host: classes.cornell.edu
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 19 23:59:59 2026 GMT
  hsts: false
- host: guides.library.cornell.edu
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  8 12:10:15 2026 GMT
  hsts: true
  hsts_max_age: 31536000
domains:
- domain: cornell.edu
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject

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