server.listen(11501, '127.0.0.1', () => console.log('Server running at http://localhost:11501/'); ); node server.js Step 3: Access in Browser Open your web browser and navigate to http://localhost:11501 . You should see the message. Alternatively, use curl :
const http = require('http'); const server = http.createServer((req, res) => res.writeHead(200, 'Content-Type': 'text/plain' ); res.end('Hello from localhost-11501!\n'); ); localhost-11501
server listen 11501; location / proxy_pass http://localhost:8080; server
npm start -- --port=11501 or
Some IoT development kits, smart home simulators, or hardware SDKs (e.g., for Raspberry Pi, Arduino, or proprietary embedded systems) use port 11501 for local debugging or telemetry streaming. 2.5 Educational or Custom TCP Servers Computer science students or hobbyists building TCP/UDP servers in Python, Node.js, or Go often pick random high-numbered ports like 11501 for testing. 3. How to Check If Something Is Running on localhost-11501 Before using localhost-11501 , you should verify whether a service is already listening on that port. On Windows (Command Prompt or PowerShell): netstat -aon | findstr :11501 Look for LISTENING state and note the PID (Process ID). On macOS/Linux (Terminal): lsof -i :11501 or On Windows (Command Prompt or PowerShell): netstat -aon