// browser extension
One click on
any tab.
Run the same lookups as ldns.com on whatever tab you're viewing — popup or pinned in the side panel. Free, no accounts, no tracking.
// what it does
Every LDNS lookup, on the tab you're already on.
DNS Records
A, AAAA, MX, TXT, NS, SOA, CAA, DNSKEY — looked up over DoH on the tab you're viewing.
WHOIS / RDAP
Registration, registrar, expiry, DNSSEC. WHOIS fallback for ccTLDs that don't speak RDAP.
Email security
SPF, DMARC, DKIM, BIMI, MTA-STS — with provider detection and policy explanations.
Server response
HTTP headers, redirect chain, response time. Same data as the website.
Multi-provider DoH
Cloudflare, Google, or DNS.SB. Switch resolvers per-query, see per-provider latency.
Light & dark
Follows your system theme by default, or pin one explicitly.
Recent searches
Quick access to your last 10 lookups. Stored locally, never synced.
Privacy first
No accounts, no analytics, no telemetry. Lookups go directly to public DNS services.
// how it works
Three clicks from install to inspection.
Click the extension icon
The current tab's domain is auto-detected and loaded.
Browse the tabs
DNS, WHOIS, email and server data laid out in organized sections.
Look up anything
Type any domain to inspect it — or pick from your recent searches.
// privacy
No accounts. No telemetry. No tracking.
DNS lookups go directly to public DoH resolvers. Recent searches are stored on your device. The extension code is open and reviewed by both stores' security teams.
Read the full privacy policy →- ✓ No data collection
- ✓ No analytics or telemetry
- ✓ Lookups straight to public DNS
- ✓ Recent searches stay local
- ✓ Open and transparent
// get started
Install in seconds.
Pick your browser. Free forever, no sign-up.