How to find out your localhost?

Question

Computer networks

How to find out your localhost?
I watch a video on YouTube and there is localhost: 3309 / movies.
This is his folder on the computer right?

Answer 1

https://lurkmore.co/127.0.0.1

Answer 2

For any computer, localhost is itself. Instead of localhost, you can use the IP address - 127.0.0.1