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mcp/harbor
Verified official

DC5 WHOIS MCP

v2026.10.18-cdf49eb

tech.dc5.whois/dc5-whois

WHOIS, RDAP, DNS, IP / ASN / CIDR and Web3 name (ENS, Unstoppable, Handshake) lookups. No API key.

transport:streamable-http tools:4
Website

Target client

run in your project directory 

claude mcp add --transport http dc5-whois https://whois.dc5.tech/mcp

setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

check_lookalike Read-only

check lookalike

check_mail_security Read-only

check mail security

list_data_sources Read-only

list data sources

lookup_target Read-only

lookup target

All 4 tools, one page each

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.