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17NAS Network Tools

Free network diagnostic tools: IP info, DNS lookup, IPv6 check. No API key.

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17NAS MCP Server

Free network diagnostic tools as an MCP server. No API key required.

Tools

  • get_ip_info — Public IP info: address, IPv4/IPv6 protocol, country, ASN, location (via 17NAS API)
  • dns_lookup — DNS records (A, AAAA, MX, TXT, NS, CNAME) via DNS-over-HTTPS
  • check_ipv6 — IPv6 reachability: AAAA resolution + TCP connectivity test over IPv6 vs IPv4

Install

npm install
Use with Claude Desktop
json

{
  "mcpServers": {
    "17nas": {
      "command": "node",
      "args": ["/path/to/17nas-mcp/src/index.js"]
    }
  }
}
Links
Website: https://17nas.com
IPv6 Test: https://17nas.com/ipv6-test.php
Registry: https://registry.modelcontextprotocol.io
MIT License.

Installation

Source-derived launch command. Check the maintainer’s required arguments and credentials before running:

bash
npx -y 17nas-mcp-server

Set up in your AI client

Merge this template into ~/Library/Application Support/Claude/claude_desktop_config.json. Keep existing servers. Add any arguments, credentials, and permissions required by the maintainer; this template has not been install-tested.

json
{
  "mcpServers": {
    "com-17nas-network-tools": {
      "command": "npx",
      "args": [
        "-y",
        "17nas-mcp-server"
      ]
    }
  }
}

Restart Claude Desktop completely for changes to take effect. Confirm the server appears connected in the client’s tool list, then try a read-only example from its documentation.

Claude Desktop setup reference

Package

17nas-mcp-servernpm

Compatible MCP Clients

17NAS Network Tools works with any MCP-compatible client. Copy the config snippet from the Configuration section above and add it to the file shown for your client, then restart the application.

  • Claude Desktop~/Library/Application Support/Claude/claude_desktop_config.jsonRestart Claude Desktop completely for changes to take effect.
  • Cursor~/.cursor/mcp.jsonRestart Cursor for changes to take effect.
  • VS Code.vscode/mcp.jsonReload VS Code window for changes to take effect.
  • Windsurf~/.codeium/windsurf/mcp_config.jsonRestart Windsurf for changes to take effect.
  • Claude Code.mcp.jsonSave at the project root, then start Claude Code in that project and review the MCP server approval prompt. Keep real credentials out of shared files.

Learn More

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