WHOIS MCP Server - Domain registration lookup using proper WHOIS protocol (port 43). Supports 877+ TLDs with parsing for 169 ccTLDs.
WHOIS MCP Server - Domain registration lookup using proper WHOIS protocol (port 43). Supports 877+ TLDs with parsing for 169 ccTLDs. That is what the whois mcp server brings to an AI assistant: the same capability, reachable through the Model Context Protocol rather than a separate app or dashboard.
A Model Context Protocol (MCP) server that provides comprehensive WHOIS domain lookup using the proper WHOIS protocol (TCP port 43). Queries authoritative WHOIS servers directly with support for 877+ TLDs and parsing for 169 country-code TLDs.
The server publishes 5 tools. What each one is for:
whois_lookup — Look up domain registration information using the proper WHOIS protocol (port 43)list_supported_tlds — List all TLDs that have WHOIS servers available for queryingrefresh_whois_servers — Refresh the WHOIS server dictionary by fetching the latest TLD list from IANA. Run this periodically to ensure the server list is up-to-date with newArchitecture — The Architecture tool exposed by this serverAttribution — This MCP server uses the comprehensive WHOIS parser from: - Repository: https://github.com/simplebytes-com/whois-parser - Author: SimpleBecause this one is hosted, setup is mostly authentication — you point your client at the endpoint and approve access. Nothing runs on your machine, so there is no runtime to keep patched.
Among the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Whois's toolset — whois_lookup, list_supported_tlds, refresh_whois_servers and 2 more — is a fair guide to whether it matches your workflow. It is maintained by simplebytes_com; worth a glance at recent repository activity before you build anything load-bearing on it.
This entry was verified against Whois's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.
| Tool | What it does |
|---|---|
| whois_lookup | Look up domain registration information using the proper WHOIS protocol (port 43). |
| list_supported_tlds | List all TLDs that have WHOIS servers available for querying. |
| refresh_whois_servers | Refresh the WHOIS server dictionary by fetching the latest TLD list from IANA. Run this periodically to ensure the server list is up-to-date with new TLDs. |
| Architecture | The Architecture tool exposed by this server. |
| Attribution | This MCP server uses the comprehensive WHOIS parser from: - **Repository**: https://github.com/simplebytes-com/whois-parser - **Author**: Simple Bytes LLC - **License**: MIT |
{
"mcpServers": {
"whois": {
"command": "npx",
"args": ["-y", "whois-mcp"]
}
}
}Configuration as documented by the project. Restart the client after saving.
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