Tesoro · Domain Security

Tesoro Domain Security

Domain security

Domain security posture for Tesoro, probed live across 3 host(s) and 2 registrable domain(s). 2 host(s) serve HTTPS (up to TLSv1.3); 0 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF absent, DMARC absent.

PetroleumRefiningEnergyOil And GasRetail FuelFortune 100

Transport & Host Security

www.tesoro.com
HTTPS: no · HSTS: no
web.archive.org
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Feb 9 22:02:42 2027 GMT
www.marathonpetroleum.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Aug 22 10:40:00 2026 GMT

Domain (DNS/Email) Security

tesoro.com
DNSSEC: no · SPF: no · DMARC: no · CAA: none
archive.org
DNSSEC: no · SPF: yes · DMARC: yes (p=none) · CAA: none

Source

Domain Security

tesoro-domain-security.yml Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.tesoro.com
  https: false
- host: web.archive.org
  https: true
  tls_version: TLSv1.3
  cert_expires: Feb  9 22:02:42 2027 GMT
  hsts: false
- host: www.marathonpetroleum.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 22 10:40:00 2026 GMT
  hsts: null
domains:
- domain: tesoro.com
  dnssec: false
  caa: []
  spf: false
  dmarc: false
- domain: archive.org
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: none