Ofgem · Domain Security

Ofgem Domain Security

Domain security

Domain security posture for Ofgem, probed live across 4 host(s) and 1 registrable domain(s). 4 host(s) serve HTTPS (up to TLSv1.3); 1 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC present (p=reject).

EnergyUnited KingdomUtilitiesElectricityGasEnergy MarketsRegulatorSmart MeteringOpen DataEnergy RegulationRenewablesGreat Britain

Transport & Host Security

www.ofgem.gov.uk
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Oct 3 03:18:33 2026 GMT
epr.ofgem.gov.uk
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Jan 20 23:59:59 2027 GMT
epre-api.ofgem.gov.uk
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Jan 20 23:59:59 2027 GMT
rer.ofgem.gov.uk
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Jan 10 23:59:59 2027 GMT

Domain (DNS/Email) Security

ofgem.gov.uk
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: none

Source

Domain Security

ofgem-domain-security.yml Raw ↑ 
generated: '2026-07-27'
method: probed
source: >-
  live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts (0-working/probe-domain-security.py),
  extended 2026-07-27 with manual TLS/HSTS probes of the three register hosts
hosts:
- host: www.ofgem.gov.uk
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  3 03:18:33 2026 GMT
  hsts: true
  hsts_max_age: 31557600
- host: epr.ofgem.gov.uk
  https: true
  tls_version: TLSv1.3
  tls_versions_supported: [TLSv1.3, TLSv1.2]
  cert_expires: Jan 20 23:59:59 2027 GMT
  hsts: false
  note: Electronic Public Register application. Probed manually 2026-07-27.
- host: epre-api.ofgem.gov.uk
  https: true
  tls_version: TLSv1.3
  tls_versions_supported: [TLSv1.3, TLSv1.2]
  cert_expires: Jan 20 23:59:59 2027 GMT
  hsts: false
  note: >-
    Electronic Public Register backend (Cognito sign-in plus the undocumented
    GraphQL endpoint). Probed manually 2026-07-27.
- host: rer.ofgem.gov.uk
  https: true
  tls_version: TLSv1.3
  tls_versions_supported: [TLSv1.3, TLSv1.2]
  cert_expires: Jan 10 23:59:59 2027 GMT
  hsts: false
  note: Renewable Electricity Register application. Probed manually 2026-07-27.
domains:
- domain: ofgem.gov.uk
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject