Domain Details
Free private domain lookup using RDAP and WHOIS. Check registration, ownership, expiration, nameservers, DNS records, SSL certificates, and marketplace availability.
Unlimited LookupsWHOIS & RDAPDNS RecordsSSL Certificates1,500+ TLDs8+ MarketplacesWayback MachineBulk LookupPortfolio ManagerTLD DatabaseBrowser ExtensionAcademy (38 Lessons)MCP ServerNPM Packages
What's Included
Domain Details has grown into a complete suite of tools for domain professionals, developers, and enthusiasts.
Marketplace Search
Real-time checking across 8+ domain marketplaces including Afternic, Sedo, Namecheap, and more.
freeBrowser Extension
Instantly check domain details while browsing. Available for Chrome.
freePortfolio
Manage your domain portfolio. Track valuations, expirations, and organize your investments.
freeDomain Details Academy
Free courses including Domain Fundamentals (12 lessons), Domain Investing (17 lessons), and Domain Security (9 lessons).
freeMCP & NPM
Connect AI agents and developer tools to domain data. MCP server for Claude and other LLMs.
Open SourceGitHub
Open source repositories and community projects.
Open SourceCore Features
WHOIS & RDAP Lookup
Check registration, ownership, expiration dates, and nameservers using modern RDAP protocol.
DNS Records
View A, MX, CNAME, TXT, and other DNS configurations for any domain.
SSL Certificates
Inspect SSL certificate details, expiration, and security status.
Marketplace Search
Real-time checking across Afternic, Sedo, Namecheap, Dynadot, NameSilo, and more.
Price Comparison
Compare domain listings and auction prices across multiple marketplaces.
Bulk Lookup
Process multiple domains simultaneously for efficient research.
1,500+ TLDs
Support for over 1,500 top-level domains with complete registrar data.
Wayback Integration
Access historical website snapshots and archival data from the Wayback Machine.
Domain Monitoring
Track WHOIS changes, nameserver updates, and expiration dates with instant alerts.
Email Notifications
Get instant email alerts when monitored domains change.
90-Day History
View all domain modifications with visual diffs and change tracking.
Privacy First
Local-first design. Queries go directly to registries. Zero data sold.
Open Source & Developer Tools
We believe in giving back to the community. Domain Details offers open source packages and developer tools to help you build domain-related applications.
Domain Success Stories
Learn from premium domain sales featured in the Academy.
Chat.com $15.5M
Icon.com $12M
Public.com $900K
Somewhere.com $400K
Paddle.com $275K
Zip.ai $200K
Loom.com $150K
OS.ai $150K
Proxyman.com $120K
Cursor.com $60K