SparkPost · Domain Security

Sparkpost Domain Security

Domain security

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

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Transport & Host Security

www.sparkpost.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Dec 23 23:59:59 2026 GMT
developers.sparkpost.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 13 22:13:51 2026 GMT
api.sparkpost.com
HTTPS: yes · TLS: TLSv1.2 · HSTS: yes · cert expires: Dec 13 23:59:59 2026 GMT

Domain (DNS/Email) Security

sparkpost.com
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: none

Source

Domain Security

Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.sparkpost.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Dec 23 23:59:59 2026 GMT
  hsts: true
  hsts_max_age: 63072000
- host: developers.sparkpost.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 13 22:13:51 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: api.sparkpost.com
  https: true
  tls_version: TLSv1.2
  cert_expires: Dec 13 23:59:59 2026 GMT
  hsts: true
  hsts_max_age: 31536000
domains:
- domain: sparkpost.com
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject