WHOIS & Domain Lookup
Private. Local-first. Free forever.
Google Alerts for Domains.
The domain you want isn't available. The owner won't reply. It's not listed on any marketplace. Just a parked page. We watch it 24/7 and ping you the second anything changes — WHOIS, DNS, ownership, expiry, or a new marketplace listing.
Domains You're Watching
Instant Email Alerts
ALERTSThe moment a watched domain changes hands, drops in price, or shows up on a marketplace — you get an email. No checking back.
Cross-Device Sync
ALERTSYour watchlist follows you. Add a domain from your phone, check the history on your laptop.
90-Day Change History
ALERTSEvery change to every watched domain, kept for 90 days with visual diffs — including aftermarket price drops.
Built for the people who can't miss a domain
Startup Founders
Your launch name is parked. We'll tell you the second it frees up.
Domain Investors
Watch expirations, ownership changes, and price drops across your shortlist.
Indie Hackers
The perfect side-project domain costs $4k today. We'll tell you when it drops.
Brand Protection
Catch typo-squatters the day they register. Document the trail for UDRP filings.
SEO Professionals
Expiring backlink-rich domains, competitor redirects, and TLD migrations — first.
Agencies
Every client domain, watched 24/7. Catch DNS and expiry issues before clients call.
TLDs Watched
Daily Checks
Days of History
Domains on Watch
Domain Taken? Check if It's Listed for Sale
When you search for a registered domain, we automatically check major marketplaces to see if it's available for purchase — showing you prices, auction status, and more. Domain Details Alerts also tracks aftermarket price and listing changes across every domain on your watchlist.
World's largest domain marketplace
FeaturedGlobal domain trading platform
Integrated registrar marketplace
Premium domain marketplace
Auctions & buy-now listings
Premium domain marketplace
NewBudget-friendly marketplace
Web3 & traditional domains
All marketplace data is fetched in real-time when you search for a domain
Search All MarketplacesAll the lookup tools, free.
Alerts watches them for you. Add a domain — we'll email the second anything changes.
Domain Lookup
WHOIS, RDAP, DNS records, SSL certificates, and pricing in one place.
Domain Details Alerts
Google Alerts for domains. Watch up to 25 domains 24/7 — we'll email the second WHOIS, DNS, ownership, expiry, or a marketplace listing changes.
Chrome Extension
Get domain info instantly while browsing any website.
MCP Server
Connect AI agents and developer tools to our domain data.
1,500+ TLDs & More
Wayback Machine history, TLD info, registrar data, and bulk lookups.
Free Academy
Learn domain investing, DNS fundamentals, and security best practices.
Domain Success Stories
We've collected fascinating domain stories from across the internet — from small, persistent $500 sales to multi-million dollar acquisitions. Learn how domains changed hands, the negotiations behind them, and the strategies that led to success.
Domain Details Academy
Whether you're buying your first domain or building a portfolio, our free courses will teach you everything from DNS fundamentals to advanced valuation strategies. No fluff, just practical knowledge from industry experts.
Academy Courses
Domain Fundamentals
Master the basics of domain names, DNS, and registration.
Domain Investing
Learn valuation, auctions, and profitable sales strategies.
Domain Security
Protect your domains from hijacking and theft.
Stay in the Loop
Weekly domain deals, news & insights.
Free forever. Unsubscribe anytime. Learn more