National Grid ESO · Domain Security

National Grid Domain Security

Domain security

Domain security posture for National Grid ESO, 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).

EnergyElectricityCarbon IntensityUKOpen DataSustainabilityGrid Operations

Transport & Host Security

www.neso.energy
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 30 15:27:23 2026 GMT
carbonintensity.org.uk
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Dec 3 23:59:59 2026 GMT
api.carbonintensity.org.uk
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 21 23:59:59 2026 GMT

Domain (DNS/Email) Security

neso.energy
DNSSEC: yes · SPF: yes · DMARC: yes (p=reject) · CAA: none
carbonintensity.org.uk
DNSSEC: no · SPF: no · DMARC: no · 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.neso.energy
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 30 15:27:23 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: carbonintensity.org.uk
  https: true
  tls_version: TLSv1.3
  cert_expires: Dec  3 23:59:59 2026 GMT
  hsts: false
- host: api.carbonintensity.org.uk
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 21 23:59:59 2026 GMT
  hsts: null
domains:
- domain: neso.energy
  dnssec: true
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject
- domain: carbonintensity.org.uk
  dnssec: false
  caa: []
  spf: false
  dmarc: false