Group 1 Automotive · Domain Security

Group 1 Automotive Domain Security

Domain security

Domain security posture for Group 1 Automotive, probed live across 1 host(s) and 1 registrable domain(s). 1 host(s) serve HTTPS (up to TLSv1.3); 1 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC present (p=none).

Fortune 500AutomotiveAutomotive RetailVehicle InventoryDealershipsRetailAgentic Accessllms-txt

Transport & Host Security

www.group1auto.com

HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Oct 5 18:45:34 2026 GMT

Domain (DNS/Email) Security

group1auto.com

DNSSEC: no · SPF: yes · DMARC: yes (p=none) · CAA: none

Source

Domain Security

generated: '2026-08-28'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.group1auto.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  5 18:45:34 2026 GMT
  hsts: true
  hsts_max_age: 3000
  hsts_note: 'Strict-Transport-Security: max-age=3000 observed on https://www.group1auto.com/llms.txt
    (200) on 2026-08-28. The automated probe recorded null because Cloudflare bot management answers 403
    to the site root for non-browser clients; the header is present on paths that are served. max-age=3000
    (50 minutes) is far below the 31536000 recommended for preload eligibility.'
domains:
- domain: group1auto.com
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: none
notes: group-1-automotive.com does not resolve (NXDOMAIN) and was the Website pointer in apis.yml before
  this pass; the live corporate/retail host is www.group1auto.com, served by the Cars.com / Dealer Inspire
  platform behind Cloudflare. Investor site www.group1corp.com is a Notified investorroom.com tenant.
  UK operations run on www.group1auto.co.uk (Azure Front Door). No CAA record and no DNSSEC on group1auto.com;
  DMARC is published at p=none (monitor only, no enforcement).

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