Domaintoolbelt - WHOIS Lookup & Domain Search

Instant WHOIS lookup and availability checks for any domain. Monitor domain expiry, nameservers, and registration in one click.

Your domain research toolkit, right in Chrome 🎯 Search, view full WHOIS, track lifecycle status, spot marketplace listings, and watch your domains. All from your browser. 🔍 Instant search with type-ahead Type any name and see availability across 1,200+ extensions, looked up directly at the registry from your own browser. Results appear as soon as each registry answers, with prices and listings filling in a moment later. Suggests popular endings as you type, and detects the site you're currently on. 📊 Full WHOIS, accurate data Registration and expiry dates, registrar, nameservers, and lock status. Correctly parsed expiry dates for registries with unusual formats, and direct registry lookups wherever a registry offers them, so you see fewer "no data" responses. Names held or reserved by the registry are labelled as held, and premium names show their yearly price. 🏷️ Marketplace listing badge See whether a domain is listed for sale on the major aftermarkets, with the asking price and a direct link to the listing page. 🔄 Lifecycle tracking Spot domains in grace period, redemption, or pending delete before they hit the open market. Useful for catching drops early. A name in a live auction says so instead of showing as available. ⭐ My Domains and alerts Save the domains you're tracking and watch them for changes. Your list stays in sync with your dashboard on domaintoolbelt.com, and alerts land in the extension's bell. 🛒 Register direct, no markup If a domain is available, open it at your preferred registrar in one click. No broker, no markup. ⚡ Fast and quiet First availability response in 50 to 200 ms, then refreshes with live registrar data. Pin the panel to keep it open, or drag it anywhere. Keyboard shortcut: Alt+Shift+D. ✅ Built for - Domain investors hunting drops and cheap registrations - Developers researching project names - Founders checking brand availability - Marketers checking competitor domains 🆕 What's new in 2.2.1 • Accounts. Create an account or sign in with Google right from the extension. Your saved domains stay in sync between the extension and your dashboard on domaintoolbelt.com. • My Domains. Every domain you save in one list. Each row shows its status (registered, for sale with price, in auction, or available), its registrar, and how long until it expires. Summary cards at the top count your domains by type: marketplace, auction, backorder, not for sale, available. • Watch domains and get alerts. Get notified when a watched domain changes: registered, dropped, available, listed for sale, price changed, nameservers changed, entered an auction, or about to drop. - Alerts appear in the extension's bell, with an unread count on the toolbar icon. - Each alert has a direct action: Register now, Place bid, or View listing. - Read state stays in sync with your dashboard. • Pin and move the panel. Pin it to keep it open while you click around the page, or drag it anywhere by its handle.