Udemy · Domain Security

Udemy Domain Security

Domain security

Domain security posture for Udemy, probed live across 2 host(s) and 2 registrable domain(s). 2 host(s) serve HTTPS (up to TLSv1.3); 1 advertise HSTS. Email/DNS controls: DNSSEC present, SPF present, DMARC present (p=reject).

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Transport & Host Security

www.udemy.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 15 04:03:30 2026 GMT
www.postman.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 16 09:00:12 2026 GMT

Domain (DNS/Email) Security

udemy.com
DNSSEC: yes · SPF: yes · DMARC: yes (p=reject) · CAA: none
postman.com
DNSSEC: no · SPF: yes · DMARC: yes (p=quarantine) · CAA: yes

Source

Domain Security

udemy-domain-security.yml Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.udemy.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 15 04:03:30 2026 GMT
  hsts: false
- host: www.postman.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 16 09:00:12 2026 GMT
  hsts: true
  hsts_max_age: 31536000
domains:
- domain: udemy.com
  dnssec: true
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject
- domain: postman.com
  dnssec: false
  caa:
  - 0 issuewild "amazon.com"
  - 0 issuewild "digicert.com"
  - 0 issuewild "letsencrypt.org"
  - 0 issuewild "pki.goog; cansignhttpexchanges=yes"
  - 0 iodef "mailto:security@postman.com"
  - 0 issue "amazon.com"
  spf: true
  dmarc: true
  dmarc_policy: quarantine