About DomainFinder
Real-time domain availability search powered by ICANN data
🚀 How It Works
Unlike most domain search tools that rely on slow registrar APIs, we use a 3-tier system for lightning-fast, accurate results:
⚡ Zone Files
We maintain daily-updated copies of ICANN zone files covering 900+ gTLDs. This gives us instant lookups for most domains in under 1ms.
💾 Smart Caching
For TLDs without zone file access (ccTLDs like .io, .co, .ai), we cache RDAP results to provide fast subsequent lookups.
🌐 Live RDAP
When needed, we query RDAP (Registration Data Access Protocol) in real-time. Results typically return in 100-500ms.
📊 Coverage
- 900+ gTLDs with zone file coverage (instant)
- Popular ccTLDs via RDAP (.io, .co, .ai, .me, .tv, etc.)
- Real-time verification for all supported domains
⚠️ Important Notes
- Results are informational only - always verify with your registrar before purchase
- Some domains may show as available but be reserved by the registry (premium domains)
- ccTLD availability depends on registry policies and may have restrictions
🔧 Technical Details
This site is built with:
- Cloudflare Pages - Global edge delivery
- Pages Functions - API proxy at the edge
- Eleventy - Static site generation
- Custom BEM CSS - No frameworks, just clean CSS