Google Tag Manager · Domain Security

Google Tag Manager Domain Security

Domain security

Domain security posture for Google Tag Manager, 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 absent, SPF present, DMARC present (p=reject).

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Transport & Host Security

developers.google.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 14 08:35:22 2026 GMT
tagmanager.googleapis.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 14 08:37:17 2026 GMT

Domain (DNS/Email) Security

google.com
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: yes
googleapis.com
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: yes

Source

Domain Security

Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: developers.google.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 14 08:35:22 2026 GMT
  hsts: true
  hsts_max_age: 63072000
- host: tagmanager.googleapis.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 14 08:37:17 2026 GMT
  hsts: null
domains:
- domain: google.com
  dnssec: false
  caa:
  - 0 issue "pki.goog"
  spf: true
  dmarc: true
  dmarc_policy: reject
- domain: googleapis.com
  dnssec: false
  caa:
  - 0 issue "pki.goog"
  spf: true
  dmarc: true
  dmarc_policy: reject