mcpbeat

WHOIS MCP Server

io.github.KincaidYang/whois
answering

WHOIS is answering right now. Last checked 14 min ago. It exposes 2 tools. Last commit 29 Jul 2026.

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

Uptime history 40 hours of history · worst hour 75%
40 hours agonow
98.9%
Uptime 24h
90 of 91 checks
2
Tools
read from the server
4508 ms
Response time
average over 24h
63
Stars
last commit 29 Jul 2026

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 14 min ago.

run in your terminal
claude mcp add whois --transport http https://whois.ddnsip.cn/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "whois": {
      "url": "https://whois.ddnsip.cn/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.whois]
url = "https://whois.ddnsip.cn/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "whois": {
      "url": "https://whois.ddnsip.cn/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "whois": {
      "url": "https://whois.ddnsip.cn/mcp"
    }
  }
}

Available tools 2

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

whois
whois_batch_lookup
Query WHOIS/RDAP information for multiple domain names, IP addresses/CIDR prefixes, or ASNs in one call. Results are returned per query with individual statuses. Disabled unless the operator enables batch queries.
whois_lookup
Query WHOIS/RDAP information for a domain name, IP address or CIDR prefix (v4 or v6), or ASN

Endpoints

URLTransportStateLatencyChecked
https://whois.ddnsip.cn/mcp streamable-http answering 6686 ms 14 min ago

WHOIS — questions

Answers built from our own checks of this server.

What can WHOIS do?
It exposes 2 tools, read directly from the server on our last check. Among them: whois_batch_lookup, whois_lookup. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is WHOIS working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 90 of 91 checks got a reply (98.9%), average response time 4508 ms. The bar chart above shows every period we have measured.
How do I connect WHOIS?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does WHOIS need an API key?
No. WHOIS completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 2 of them are readable on this page. This is what we observed, not what the docs claim.
Is WHOIS open source?
Yes — it is published under the MIT licence, written in Go and 63 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.