// legal
Privacy Policy
LDNS browser extension. Chrome & Firefox
Last updated: August 2026
Overview
LDNS is a browser extension that provides DNS, WHOIS/RDAP, email security, and server information lookups. It is built to protect your privacy and to be transparent about exactly where data goes.
Data collection
What LDNS does not collect
- Does NOT collect any personal information
- Does NOT track your browsing history or read page content
- Does NOT send your lookups to LDNS servers. The extension has no backend
- Does NOT use analytics or tracking services in the extension
- Does NOT sell or share any data with third parties
What stays on your device
The following data is stored locally in your browser using the extension storage API:
- Recent searches: the last 10 domains you've looked up
- Preferences: your selected DNS provider and theme preference
This data never leaves your browser and can be cleared at any time.
Third-party services
When you perform a lookup, the queried domain name (or, for ASN/geo, an IP address), and nothing else, is sent to one or more of the following public services:
| Service | Purpose | Privacy policy |
|---|---|---|
| Cloudflare DNS | DNS-over-HTTPS queries (default resolver) | cloudflare.com/privacypolicy |
| Google DNS | DNS-over-HTTPS queries (when selected) | policies.google.com/privacy |
| DNS.SB | DNS-over-HTTPS queries (when selected) | dns.sb/privacy |
| RDAP.org | WHOIS/RDAP registration lookups | Public RDAP bootstrap service |
| crt.sh | Certificate Transparency search (subdomains, TLS cert) | crt.sh |
| Team Cymru | IP-to-ASN mapping (via DNS, for the ASN/origin view) | team-cymru.com |
| hstspreload.org | HSTS preload-list status | hstspreload.org |
| The domain you look up | Server-info tab issues an HTTP request to read response headers | : |
When you look up a domain, only the domain name (or IP) is sent to these services. No personal information is transmitted.
LDNS servers are never contacted
The extension makes no requests to ldns.com or any other LDNS-owned server. Every lookup goes directly from your browser to the public services listed above. There is no backend, no telemetry, and no account.
The extension does contain links to ldns.com (the header logo and the per-tab "view full report" chips). Those are ordinary links: nothing is sent unless you click one, which opens the site in a new tab like any other link.
Host permissions
This extension requests broad host permissions for the following specific purpose:
- Server info tab: to fetch HTTP headers and trace redirects for any domain you look up
This permission is only used when you actively perform a lookup. The extension does not access websites in the background or monitor your browsing.
Permissions explained
| Permission | Why it is needed |
|---|---|
| activeTab | Read the current tab's URL to auto-populate the domain field |
| storage | Save your preferences and recent searches locally |
| sidePanel | Open LDNS in the browser side panel when you enable side-panel mode (Chrome) |
| host_permissions | Query DNS providers and fetch server information |
Data security
- All DNS queries use encrypted DNS-over-HTTPS (DoH)
- No data is transmitted to LDNS servers, ever. There is no backend to send it to
- All preferences are stored locally using the browser's secure storage API
Your rights
You can:
- Clear your recent searches at any time within the extension
- Uninstall the extension to remove all locally stored data
- Use the extension without any account or registration
Changes to this policy
This privacy policy may be updated from time to time. Any changes will be reflected in the "Last updated" date above.
Contact
For privacy concerns or questions, please visit ldns.com.
Summary: LDNS is a privacy-focused tool. It does not collect, store, or transmit your personal data. All lookups are performed directly between your browser and public DNS / WHOIS services, the extension never contacts ldns.com.