---
title: ToolRouter — Agent Use Case Guide
description: Step-by-step guide for completing a task with a specific AI agent using ToolRouter.
url: https://toolrouter.com/tools/whois-rdap/use-cases/lookup-registration-details/claude
---
# How to Look Up Domain Registration with Claude

Claude approaches domain registration research as an investigative conversation, connecting registration patterns to strategic insights through deep reasoning. Ask Claude to analyze ownership timelines, assess domain provenance for acquisitions, and cross-reference registrar details across your entire portfolio in a single session. Its ability to draw inferences from registration data makes it especially valuable for due diligence, competitive intelligence, and security investigations where context matters.

## Setup

claude mcp add toolrouter -- npx -y toolrouter-mcp

## Steps

1. Connect ToolRouter: claude mcp add toolrouter -- npx -y toolrouter-mcp
2. Ask Claude: "Look up registration details for example.com using whois-rdap"
3. Claude returns complete WHOIS/RDAP registration data
4. Review the registration details for the information you need
5. Use the data for your investigation, audit, or planning

## Example Prompt

```
Look up the WHOIS registration details for example.com. I need to know who owns it, when it was registered, when it expires, and which registrar it uses.
```

## Tips

- Many domains use privacy protection services -- the registrant may be masked
- Ask Claude to check multiple domains at once for batch research
- The RDAP protocol provides more structured data than traditional WHOIS
