To the school or work network, it looked like you were visiting 4FNet.org, not the gaming site or YouTube video you were actually watching. This is a technique known as "masking."
How to interpret a 2021-era page entry (example) what is 4fnetorg 2021
The door slid open, revealing a dimly lit room filled with rows of humming servers. A figure emerged from the shadows, dressed in a simple white robe. To the school or work network, it looked