Column Tax · Domain Security

Column Tax Domain Security

Domain security

Domain security posture for Column Tax, 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=none).

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Transport & Host Security

www.columntax.com

HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 12 19:13:30 2026 GMT

docs.columntax.com

HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Oct 4 13:46:45 2026 GMT

prod.columnapi.com

HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Dec 2 23:59:59 2026 GMT

Domain (DNS/Email) Security

columntax.com

DNSSEC: no · SPF: yes · DMARC: yes (p=none) · CAA: none

columnapi.com

DNSSEC: no · SPF: no · DMARC: yes (p=none) · CAA: none

Source

Domain Security

generated: '2026-07-18'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.columntax.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 12 19:13:30 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: docs.columntax.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  4 13:46:45 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: prod.columnapi.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Dec  2 23:59:59 2026 GMT
  hsts: true
  hsts_max_age: 31556952
domains:
- domain: columntax.com
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: none
- domain: columnapi.com
  dnssec: false
  caa: []
  spf: false
  dmarc: true
  dmarc_policy: none