---
title: ToolRouter — Use Case
description: Step-by-step guide for a real-world ToolRouter use case with agent-specific instructions.
url: https://toolrouter.com/tools/whois-rdap/use-cases/research-competitor-domains
---
# Research Competitor Domains

Competitor domain portfolios reveal strategic intent. A company that registers dozens of domain variations is protecting their brand aggressively. A competitor who recently registered domains in new TLDs might be planning an expansion. Domain registration dates can tell you when a competitor started planning a product before it was publicly announced.

The lookup_domain skill lets you research competitor domains systematically, checking registration dates, registrars, nameservers, and expiration timelines. By mapping out a competitor domain portfolio, you understand their infrastructure strategy, brand protection posture, and potential future plans. This competitive intelligence is valuable for strategic planning, brand protection, and market analysis.

**Tool:** [Whois RDAP](https://toolrouter.com/tools/whois-rdap)
**Skills:** lookup_domain

## Agent Guides

- [How to Research Competitor Domains with Claude](https://toolrouter.com/tools/whois-rdap/use-cases/research-competitor-domains/claude): Guide for Claude
- [How to Research Competitor Domains with ChatGPT](https://toolrouter.com/tools/whois-rdap/use-cases/research-competitor-domains/chatgpt): Guide for ChatGPT
- [How to Research Competitor Domains with Copilot](https://toolrouter.com/tools/whois-rdap/use-cases/research-competitor-domains/copilot): Guide for Copilot
- [How to Research Competitor Domains with OpenClaw](https://toolrouter.com/tools/whois-rdap/use-cases/research-competitor-domains/openclaw): Guide for OpenClaw
