Seismic · Domain Security

Seismic Domain Security

Domain security

Domain security posture for Seismic, probed live across 3 host(s) and 1 registrable domain(s). 3 host(s) serve HTTPS (up to TLSv1.3); 2 advertise HSTS. Email/DNS controls: DNSSEC present, SPF present, DMARC present (p=quarantine).

Transport & Host Security

developer.seismic.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Oct 2 21:07:53 2026 GMT
seismic.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 24 22:45:09 2026 GMT
api.seismic.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Jul 30 23:59:59 2026 GMT

Domain (DNS/Email) Security

seismic.com
DNSSEC: yes · SPF: yes · DMARC: yes (p=quarantine) · CAA: yes

Source

Domain Security

Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: developer.seismic.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  2 21:07:53 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: seismic.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 24 22:45:09 2026 GMT
  hsts: true
  hsts_max_age: 63072000
- host: api.seismic.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Jul 30 23:59:59 2026 GMT
  hsts: null
domains:
- domain: seismic.com
  dnssec: true
  caa:
  - 0 issue "pki.goog"
  - 0 issuewild "awstrust.com"
  - 0 issuewild "digicert.com"
  - 0 issuewild "letsencrypt.org"
  - 0 issuewild "pki.goog"
  - 0 iodef "mailto:security@seismic.com"
  spf: true
  dmarc: true
  dmarc_policy: quarantine