generated: '2026-07-27'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.nationalgrid.co.uk
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 29 02:28:57 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: connecteddata.nationalgrid.co.uk
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 16 23:51:30 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: dso.nationalgrid.co.uk
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  2 04:01:44 2026 GMT
  hsts: true
  hsts_max_age: 31536000
domains:
- domain: nationalgrid.co.uk
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject