Arthur Online · Domain Security

Arthur Online Domain Security

Domain security

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

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Transport & Host Security

www.arthuronline.co.uk
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Oct 3 21:16:39 2026 GMT
developer.arthuronline.co.uk
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Oct 3 19:13:50 2026 GMT
api.arthuronline.co.uk
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Oct 3 19:13:50 2026 GMT

Domain (DNS/Email) Security

arthuronline.co.uk
DNSSEC: no · SPF: yes · DMARC: yes (p=quarantine) · 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.arthuronline.co.uk
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  3 21:16:39 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: developer.arthuronline.co.uk
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  3 19:13:50 2026 GMT
  hsts: null
- host: api.arthuronline.co.uk
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  3 19:13:50 2026 GMT
  hsts: null
domains:
- domain: arthuronline.co.uk
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: quarantine