Lucidchart · Domain Security

Lucidchart Domain Security

Domain security

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

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Transport & Host Security

www.lucidchart.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 25 07:09:13 2026 GMT
developer.lucid.co
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 31 03:57:52 2026 GMT
api.lucid.co
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Aug 5 19:02:32 2026 GMT

Domain (DNS/Email) Security

lucidchart.com
DNSSEC: no · SPF: yes · DMARC: yes (p=quarantine) · CAA: none
lucid.co
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: www.lucidchart.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 25 07:09:13 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: developer.lucid.co
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 31 03:57:52 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: api.lucid.co
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug  5 19:02:32 2026 GMT
  hsts: null
domains:
- domain: lucidchart.com
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: quarantine
- domain: lucid.co
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: quarantine