WHOIS MCP Server: Install & Setup

Install WHOIS in Claude Code

Claude Code

claude mcp add --transport http kincaidyang-whois https://whois.ddnsip.cn/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "kincaidyang-whois": {
      "url": "https://whois.ddnsip.cn/mcp"
    }
  }
}

Frequently asked questions

What does the WHOIS MCP server do?

Query WHOIS/RDAP information for domains, IP addresses, CIDR prefixes and ASNs. Self-hostable.

Is the WHOIS MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does WHOIS run locally or remotely?

Remote. Hosted by the provider. You connect with a URL, nothing to install.

How do I add WHOIS to Claude Code?

Run: claude mcp add --transport http kincaidyang-whois https://whois.ddnsip.cn/mcp

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