Customer.io · Domain Security

Customer Io Domain Security

Domain security

Domain security posture for Customer.io, 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=quarantine).

Behavioral DataBroadcastsCampaignsCDPCustomer DataCustomer Data PlatformData IngestionEmailEvent TrackingMarketing AutomationMessagingPush NotificationsSegmentsSMSTransactional Email

Transport & Host Security

customer.io
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 22 13:17:15 2026 GMT
docs.customer.io
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 26 05:13:46 2026 GMT
track.customer.io
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 4 02:31:30 2026 GMT

Domain (DNS/Email) Security

customer.io
DNSSEC: no · SPF: yes · DMARC: yes (p=quarantine) · 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: customer.io
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 22 13:17:15 2026 GMT
  hsts: true
  hsts_max_age: 63072000
- host: docs.customer.io
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 26 05:13:46 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: track.customer.io
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep  4 02:31:30 2026 GMT
  hsts: true
  hsts_max_age: 31536000
domains:
- domain: customer.io
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: quarantine