MasterClass · Domain Security

Masterclass Domain Security

Domain security

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

CompanyEdtechEducationOnline LearningStreamingVideoE-LearningProfessional Development

Transport & Host Security

www.masterclass.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Oct 7 17:54:59 2026 GMT

Domain (DNS/Email) Security

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

Source

Domain Security

masterclass-domain-security.yml Raw ↑ 
generated: '2026-07-20'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.masterclass.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  7 17:54:59 2026 GMT
  hsts: null
domains:
- domain: masterclass.com
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject