LDNS - DNS & Domain Tools 作者： Reparo Labs
Instant DNS records, WHOIS/RDAP data, email security analysis, and server info for any domain. Fast, private, no data collection.
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LDNS puts a complete DNS and domain toolkit one click away: DNS records, WHOIS/RDAP registration data, email authentication, server details, and subdomain discovery. It works on the site you're already 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, no backend. Every lookup goes directly from your browser to public DNS, registry, and Certificate Transparency services. Nothing is ever sent to an LDNS server. Recent searches are stored only on your device. And you don't have to take my word for it: the source is public at github.com/jmorf/ldns. Full policy: ldns.com/extension/privacy
WHAT'S NEW
v1.8.3
• WHOIS/RDAP lookups are much faster and more reliable: LDNS now queries each registry's own RDAP server directly (using IANA's public directory) instead of going through the rdap.org proxy, which had become slow and flaky. Registries without RDAP (like .de) now say so immediately.
v1.8.2
• RDAP lookups for slow registries (some ccTLDs like .br) no longer time out: the registry data was arriving, just after our cutoff. The timeout now allows for rdap.org's occasional slow first answer.
• After a week of regular use, LDNS asks once whether you would like to rate it or send feedback. Three clicks of "Later" and it never asks again.
LINKS
Website: ldns.com
Privacy policy: ldns.com/extension/privacy
Source code and issues: github.com/jmorf/ldns
Contact: @jmorf on X
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, no backend. Every lookup goes directly from your browser to public DNS, registry, and Certificate Transparency services. Nothing is ever sent to an LDNS server. Recent searches are stored only on your device. And you don't have to take my word for it: the source is public at github.com/jmorf/ldns. Full policy: ldns.com/extension/privacy
WHAT'S NEW
v1.8.3
• WHOIS/RDAP lookups are much faster and more reliable: LDNS now queries each registry's own RDAP server directly (using IANA's public directory) instead of going through the rdap.org proxy, which had become slow and flaky. Registries without RDAP (like .de) now say so immediately.
v1.8.2
• RDAP lookups for slow registries (some ccTLDs like .br) no longer time out: the registry data was arriving, just after our cutoff. The timeout now allows for rdap.org's occasional slow first answer.
• After a week of regular use, LDNS asks once whether you would like to rate it or send feedback. Three clicks of "Later" and it never asks again.
LINKS
Website: ldns.com
Privacy policy: ldns.com/extension/privacy
Source code and issues: github.com/jmorf/ldns
Contact: @jmorf on X
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