WhoisLookup MCP Server

by therealmrfunguy Your server? Claim it

not responding

WhoisLookup is listed as active in the registry but did not answer our last check.

Domain WHOIS, DNS records, SSL certificates, and availability checks.

Uptime history 91 days of history · worst day 0%

91 days agonow

0.0%

Uptime 24h

0 of 91 checks

—

Tools

hidden behind auth

175 ms

Response time

average over 24h

open, no key

Access

sse

WhoisLookup does not always answer

Over the last week it answered 0.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add whois-lookup --transport sse https://whois.rjctdlabs.xyz/sse

Settings → Connectors → Add custom connector, then paste this address

https://whois.rjctdlabs.xyz/sse

~/.codex/config.toml

[mcp_servers.whois-lookup]
url = "https://whois.rjctdlabs.xyz/sse"

.cursor/mcp.json

{
  "mcpServers": {
    "whois-lookup": {
      "url": "https://whois.rjctdlabs.xyz/sse"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "whois-lookup": {
      "type": "sse",
      "url": "https://whois.rjctdlabs.xyz/sse"
    }
  }
}

Endpoints

URL	Transport	State	Latency	Checked
https://whois.rjctdlabs.xyz/sse	sse	answering	175 ms	8 min ago

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WhoisLookup — questions

Answers built from our own checks of this server.

Is WhoisLookup working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 91 checks got a reply (0.0%), average response time 175 ms. The bar chart above shows every period we have measured.

The registry lists WhoisLookup as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

How do I connect WhoisLookup?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does WhoisLookup need an API key?

No. WhoisLookup completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. This is what we observed, not what the docs claim.