Localhost11501 — Link

Run these commands in your terminal:

If you see output with LISTEN, a service is running. If not, nothing is using that port.

Before we dissect the 11501 part, we must understand localhost. In computer networking, localhost is a hostname that refers to the current device used to access it. It is used to access network services running on the host via the loopback network interface. The standard IP address for localhost is 127.0.0.1 (IPv4) or ::1 (IPv6). localhost11501 link

When you type localhost into your browser, you are essentially talking to your own computer. No data leaves your machine. This is the sandbox where developers build, test, and break applications without affecting the live internet.

If a link to localhost:11501 fails to load, the following steps are recommended: Run these commands in your terminal:

If you have a frontend on localhost:3000 trying to fetch from localhost:11501, browsers may block it due to CORS unless the server on 11501 includes appropriate CORS headers.

Jupyter often uses random high ports (e.g., 8888, 8890, 11501) if the default is taken. If you see output with LISTEN , a service is running

Many modern front-end frameworks (React, Vue, Svelte, Angular) start a hot-reload dev server on a random high port. Examples: