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Description
Instant DNS records, WHOIS/RDAP data, email security analysis, and server info for any domain. Fast, private, no data collection. LDNS puts a complete DNS and domain toolkit one click away: DNS records, WHOIS/RDAP registration data, email authentication, server details, and subdomain discovery — for the site you're on, or any domain you type. WHAT IT DOES • DNS lookups over encrypted DNS-over-HTTPS, with a choice of three public resolvers and a Compare view that highlights propagation mismatches between them • Reverse DNS and origin-network (ASN) details shown inline next to each address • WHOIS/RDAP registration data with domain age, expiry countdown, and DNSSEC status • Email security check-up covering SPF, DMARC, DKIM, BIMI, and MTA-STS, with the sending provider detected automatically • Server insights: response headers, redirect-chain tracing, response time, a security-headers audit, HTTP/3 detection, and identification of the technology stack behind the site • Subdomain discovery by scanning Certificate Transparency logs • Click-to-copy on every value, CSV/JSON export, side-panel mode, system/light/dark theme, and deep links to full reports on ldns.com PRIVACY No accounts, no analytics, no tracking. Lookups go directly from your browser to public DNS, registry, and Certificate Transparency services — nothing touches LDNS servers unless you enable the optional marketplace-listing check, which is off by default. Recent searches are stored only on your device. Full policy: ldns.com/extension/privacy WHAT'S NEW v1.7.10 • Report a bug / send feedback — links in Settings and the popup footer open a prefilled GitHub issue. Nothing is sent until you submit it. v1.7.9 • Fixed a Firefox "File not found" error when turning side-panel mode off from inside the popup. LINKS Website: ldns.com Privacy policy: ldns.com/extension/privacy Feedback and bug reports: github.com/jmorf/ldns-feedback or @jmorf on X