generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.columbia.edu
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep  5 23:58:29 2026 GMT
  hsts: null
- host: opendataservice.columbia.edu
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 15 09:34:03 2026 GMT
  hsts: null
- host: library.columbia.edu
  https: true
  tls_version: TLSv1.2
  cert_expires: Jan 23 23:59:59 2027 GMT
  hsts: false
domains:
- domain: columbia.edu
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: none