WHOIS for Claude.ai

io.github.kincaidyang/whois

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

client:Claude.ai transport:streamable-http tools:2

Install WHOIS in Claude.ai

Settings → Connectors → Add custom connector

https://whois.ddnsip.cn/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

whois_batch_lookup
whois_lookup

WHOIS in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

WHOIS MCP server