Basecamp · Domain Security

Basecamp Domain Security

Domain security

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

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Transport & Host Security

basecamp.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Oct 6 06:03:30 2026 GMT
3.basecampapi.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Aug 19 06:20:30 2026 GMT
launchpad.37signals.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 14 08:30:05 2026 GMT

Domain (DNS/Email) Security

basecamp.com
DNSSEC: no · SPF: yes · DMARC: yes (p=quarantine) · CAA: yes
basecampapi.com
DNSSEC: no · SPF: no · DMARC: no · 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: basecamp.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  6 06:03:30 2026 GMT
  hsts: false
- host: 3.basecampapi.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 19 06:20:30 2026 GMT
  hsts: false
- host: launchpad.37signals.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 14 08:30:05 2026 GMT
  hsts: true
  hsts_max_age: 63072000
domains:
- domain: basecamp.com
  dnssec: false
  caa:
  - 0 issuewild "pki.goog; cansignhttpexchanges=yes"
  - 0 issuewild "ssl.com"
  - 0 iodef "mailto:sysadmins@37signals.com"
  - 0 issue "amazon.com"
  - 0 issue "comodoca.com"
  - 0 issue "digicert.com; cansignhttpexchanges=yes"
  spf: true
  dmarc: true
  dmarc_policy: quarantine
- domain: basecampapi.com
  dnssec: false
  caa:
  - 0 iodef "mailto:sysadmins@37signals.com"
  - 0 issue "amazon.com"
  - 0 issue "comodoca.com"
  - 0 issue "digicert.com; cansignhttpexchanges=yes"
  - 0 issue "letsencrypt.org"
  - 0 issue "pki.goog; cansignhttpexchanges=yes"
  spf: false
  dmarc: false

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