Constellation Energy · Domain Security

Constellation Energy Domain Security

Domain security

Domain security posture for Constellation Energy, probed live across 2 host(s) and 2 registrable domain(s). 2 host(s) serve HTTPS (up to TLSv1.2); 0 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF absent, DMARC absent.

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Transport & Host Security

www.constellationenergy.com
HTTPS: yes · TLS: TLSv1.2 · HSTS: no · cert expires: Oct 30 23:59:59 2026 GMT
www.constellation.com
HTTPS: yes · TLS: TLSv1.2 · HSTS: no · cert expires: Oct 30 23:59:59 2026 GMT

Domain (DNS/Email) Security

constellationenergy.com
DNSSEC: no · SPF: no · DMARC: no · CAA: none
constellation.com
DNSSEC: no · SPF: yes · DMARC: yes (p=quarantine) · CAA: none

Source

Domain Security

constellation-energy-domain-security.yml Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.constellationenergy.com
  https: true
  tls_version: TLSv1.2
  cert_expires: Oct 30 23:59:59 2026 GMT
  hsts: false
- host: www.constellation.com
  https: true
  tls_version: TLSv1.2
  cert_expires: Oct 30 23:59:59 2026 GMT
  hsts: false
domains:
- domain: constellationenergy.com
  dnssec: false
  caa: []
  spf: false
  dmarc: false
- domain: constellation.com
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: quarantine