You can check what is using port 11501 on your system:

No application is listening on port 11501. The server isn't running. Solution:

People often omit the colon when speaking, writing it as "localhost11501" — but technically, the colon is mandatory.

services: app: ports: - "11501:80"

If you are building a script or API client that must interact with localhost:11501 , here is how to structure your requests.

Certain data synchronization tools, backup clients, or enterprise software suites spin up local web servers on higher port numbers. Port 11501 is occasionally used by background services to communicate configurations from a web-based dashboard down to the local system architecture. 3. Custom Developer Environments

While any developer can assign their software to port 11501, this specific port is frequently associated with the following systems: 1. Crypto Mining Software

or

: Developers often host local versions of websites on unique ports like 11501 to test new features without interfering with other local projects.

localhost:11501 typically refers to a specific network address