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Performs comprehensive WHOIS domain lookups by directly querying authoritative servers for detailed registration information across numerous TLDs.

This Model Context Protocol (MCP) server offers robust WHOIS domain lookup capabilities, directly querying authoritative WHOIS servers via TCP port 43. It boasts support for over 877 Top-Level Domains (TLDs) and includes sophisticated, format-specific parsing for 169 country-code TLDs. The server efficiently extracts critical domain registration data such as registrar, creation and expiration dates, nameservers, domain status, and contact information, making it an essential tool for obtaining accurate and up-to-date domain details. It's designed for seamless integration with MCP-compatible clients, including Claude Desktop, and can also be used as a hosted service.

Key Features

01Support for over 877 Top-Level Domains (TLDs)
02Direct TCP port 43 connections to authoritative WHOIS servers
030 GitHub stars
04Comprehensive parsing to extract registrar, dates, nameservers, status, and contacts
05Automated updates for the WHOIS server dictionary from IANA
06Format-specific parsing for 169 country-code TLDs

Use Cases

01Retrieve detailed domain registration information, including ownership, dates, and nameservers.
02Integrate WHOIS lookup functionality into applications or MCP-compatible clients.
03Maintain an updated database of TLDs and their corresponding WHOIS servers.