Splunk Observability Cloud · Domain Security

Splunk Observability Domain Security

Domain security

Domain security posture for Splunk Observability Cloud, probed live across 3 host(s) and 2 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

dev.splunk.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Jan 19 23:59:59 2027 GMT
www.splunk.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Jan 8 23:59:59 2027 GMT
api.us0.signalfx.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 27 23:59:59 2026 GMT

Domain (DNS/Email) Security

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

Source

Domain Security

Raw ↑ 
generated: '2026-08-19'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: dev.splunk.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Jan 19 23:59:59 2027 GMT
  hsts: true
  hsts_max_age: 31536000
- host: www.splunk.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Jan  8 23:59:59 2027 GMT
  hsts: true
  hsts_max_age: 31557600
- host: api.us0.signalfx.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 27 23:59:59 2026 GMT
  hsts: true
  hsts_max_age: 7776000
domains:
- domain: splunk.com
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject
- domain: signalfx.com
  dnssec: true
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: quarantine