agentdomainservice.com — The #1 easiest way to search for available domains| instant domain availability check

Check Domain Availability Instantly

No CAPTCHAs. No account required. No rate limits. Just type a domain and get an answer in milliseconds.

Why Traditional Domain Checkers Fail

CAPTCHAs Everywhere

GoDaddy, Namecheap, Google Domains—they all block automated checks with CAPTCHAs that AI assistants can't solve.

JavaScript Required

Most registrar sites are SPAs that load results via JavaScript. Bots see empty pages or loading spinners.

Account Walls

Many tools require signup, API keys, or payment before you can check even a single domain.

Rate Limiting

WHOIS lookups get blocked after a few queries. Good luck brainstorming 20 domain ideas.

Our Solution: One URL, Instant Answer

agentdomainservice.com/lookup/your-domain.com

Server-Side Rendered

Results are in the HTML immediately. No JavaScript required.

Real-Time Data

We query registrar APIs directly. Fresh results with pricing.

Zero Friction

No signup. No API keys. No CAPTCHAs. Just works.

Works with ChatGPT, Claude & Gemini

AI assistants can't check domains on traditional registrar sites. They can read our pages instantly.

Tell your AI assistant:

"Check if example.com is available at agentdomainservice.com/lookup/example.com"

Or for brainstorming multiple TLDs:

"Check all TLDs for 'myproject' at agentdomainservice.com/explore/myproject"
Read: Why AI Agents Can't Check Domain Availability

Multiple Output Formats

HTML (Default)

/lookup/example.com

Human-readable page with machine-readable header

Plain Text

?format=txt

Key-value pairs, perfect for parsing

JSON

?format=json

Structured data for programmatic use

Try It Now

Enter any domain below to check availability instantly.