Ordnance Survey · Domain Security

Ordnance Survey Domain Security

Domain security

Domain security posture for Ordnance Survey, probed live across 3 host(s) and 2 registrable domain(s). 3 host(s) serve HTTPS (up to TLSv1.3); 2 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC present (p=reject).

Real EstateUnited KingdomLand RegistryGeospatialAddressingOpen DataProperty DataPropTechGovernmentMappingOGCUPRNNational MappingGNSSVector Tiles

Transport & Host Security

www.ordnancesurvey.co.uk
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Jan 5 23:59:59 2027 GMT
docs.os.uk
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Oct 14 11:25:42 2026 GMT
api.os.uk
HTTPS: yes · TLS: TLSv1.2 · HSTS: no · cert expires: Jan 8 23:59:59 2027 GMT

Domain (DNS/Email) Security

ordnancesurvey.co.uk
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: none
os.uk
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: none

Source

Domain Security

Raw ↑ 
generated: '2026-07-26'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.ordnancesurvey.co.uk
  https: true
  tls_version: TLSv1.3
  cert_expires: Jan  5 23:59:59 2027 GMT
  hsts: true
  hsts_max_age: 15768000
- host: docs.os.uk
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct 14 11:25:42 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: api.os.uk
  https: true
  tls_version: TLSv1.2
  cert_expires: Jan  8 23:59:59 2027 GMT
  hsts: false
domains:
- domain: ordnancesurvey.co.uk
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject
- domain: os.uk
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject