CMS Energy · Domain Security

Cms Energy Domain Security

Domain security

Domain security posture for CMS Energy, probed live across 3 host(s) and 2 registrable domain(s). 3 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.cmsenergy.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 26 14:48:40 2026 GMT
www.consumersenergy.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Nov 5 23:59:59 2026 GMT
utilityapi.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Aug 17 19:11:25 2026 GMT

Domain (DNS/Email) Security

cmsenergy.com
DNSSEC: yes · SPF: yes · DMARC: yes (p=reject) · CAA: none
consumersenergy.com
DNSSEC: yes · 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: www.cmsenergy.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 26 14:48:40 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: www.consumersenergy.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Nov  5 23:59:59 2026 GMT
  hsts: null
- host: utilityapi.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 17 19:11:25 2026 GMT
  hsts: false
domains:
- domain: cmsenergy.com
  dnssec: true
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject
- domain: consumersenergy.com
  dnssec: true
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject