generated: '2026-07-20'
method: probed
source: live DNS/TLS/HTTP probes of the surviving Cask/CDAP hosts
notes: >-
  Cask Data's own domain (cask.co) no longer serves the company site — it resolves to a WP Engine
  parking host whose certificate is issued for *.wpengine.com and whose HTTP responses are 404.
  The CDAP documentation host docs.cdap.io serves an expired certificate (expired 2023-09-27) and,
  when the certificate error is bypassed, 301-redirects to the CDAP Confluence wiki. The living,
  healthy host is cdap.io.
hosts:
- host: cdap.io
  https: true
  http_status: 200
  tls_version: TLSv1.3
  cert_subject: CN=cdap.io
  cert_expires: Oct 13 16:13:47 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: docs.cdap.io
  https: false
  https_error: certificate has expired
  tls_version: TLSv1.3
  cert_subject: CN=docs.cdap.io
  cert_expires: Sep 27 17:03:17 2023 GMT
  hsts: false
  note: 301 redirects to https://cdap.atlassian.net/wiki/spaces/DOCS/overview once the cert error is bypassed
- host: cask.co
  https: false
  https_error: certificate name mismatch (CN=*.wpengine.com)
  http_status: 404
  hsts: false
  note: company domain no longer serves Cask content
- host: cdap.atlassian.net
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  8 23:59:59 2026 GMT
  hsts: true
  hsts_max_age: 63072000
  note: third-party documentation host (Atlassian Confluence Cloud)
domains:
- domain: cdap.io
  dnssec: false
  caa:
  - 0 issue "pki.goog"
  - 0 issue "letsencrypt.org"
  spf: true
  spf_record: v=spf1 -all
  dmarc: true
  dmarc_policy: reject
- domain: cask.co
  dnssec: false
  caa:
  - 0 issue "letsencrypt.org"
  - 0 issue "pki.goog"
  spf: true
  spf_record: v=spf1 include:_spf.google.com include:mktomail.com include:spf.mandrillapp.com ~all
  dmarc: true
  dmarc_policy: none
- domain: atlassian.net
  dnssec: false
  caa:
  - 0 issue "amazon.com"
  - 0 issue "digicert.com"
  spf: true
  dmarc: true
  dmarc_policy: reject
  note: third-party documentation host, not operated by Cask/CDAP