Privacy Policy

Last updated: September 2026

Data We Collect

Global DNS Checker collects the minimum data needed to provide the DNS checking service:

  • DNS Queries: The domain names and record types you look up are logged for statistics and service improvement. These query logs do not store your IP address, your email, or any other personal identifier.
  • Account Data: If you register an account, we store your name, email address, and a securely hashed password. Passwords are kept only as a salted one-way hash produced by a deliberately slow algorithm, never in plain text.
  • API Keys: API keys you generate are stored in your account as a hash. API usage (request counts and timestamps) is recorded for rate limiting.

Cookies

We use only functional cookies. We do not use advertising or cross-site tracking cookies.

  • Authentication: A secure httpOnly token cookie keeps you signed in, plus a small loggedIn flag the interface reads to show your login state. The admin panel uses a separate httpOnly adminToken cookie.
  • Preferences: A dnsCheckerView cookie remembers whether you prefer the card or map view.

Analytics

We use Cloudflare Web Analytics to understand aggregate traffic, such as page views and referrers. It is privacy-focused: it sets no cookies, does not fingerprint visitors, and does not track you across other websites. Because it measures page views, the page URL is processed by Cloudflare, and lookup pages carry the queried domain in their path (for example /lookup/example.com/A). We do not use any other third-party analytics service.

Data We Do Not Collect

  • We do not sell or share personal data with third parties.
  • We do not track your browsing behavior across other websites.
  • We do not build advertising profiles.

Data Retention

DNS query logs are retained for statistical purposes. Rate limit records are deleted automatically through MongoDB TTL indexes. You can delete your account at any time from your account settings: your profile and every API key on it are removed, and the lookups that account produced keep nothing that identifies you.

Security

All connections to Global DNS Checker are encrypted with HTTPS/TLS. Authentication tokens are signed with industry-standard JWT. Administrative access requires explicit credentials with no default passwords.

Contact

For privacy-related questions, email us at [email protected].