Anthropic · Domain Security

Anthropic Domain Security

Domain security

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

AIArtificial IntelligenceClaudeFoundation ModelsLarge Language ModelsMachine LearningMCPAgents

Transport & Host Security

platform.claude.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 24 00:48:33 2026 GMT
www.anthropic.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Oct 6 15:03:46 2026 GMT
docs.anthropic.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 17 19:48:08 2026 GMT

Domain (DNS/Email) Security

claude.com
DNSSEC: no · SPF: no · DMARC: yes (p=reject) · CAA: none
anthropic.com
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: platform.claude.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 24 00:48:33 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: www.anthropic.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  6 15:03:46 2026 GMT
  hsts: true
  hsts_max_age: 3600
- host: docs.anthropic.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 17 19:48:08 2026 GMT
  hsts: true
  hsts_max_age: 31536000
domains:
- domain: claude.com
  dnssec: false
  caa: []
  spf: false
  dmarc: true
  dmarc_policy: reject
- domain: anthropic.com
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject