Why do computers connected to the same wi-fi network see the old version of the site?

Question

Computer networks

Hello!

Such a problem:
we connected the domain to the trading platform (to do this, we simply changed the ns-records of the domain). Some time has passed, a message arrives that the domain and the selected design are connected. I go to the site, and the Apache test page is still displayed there. At the same time, if you log in from a phone or computers on another network, the site is normally displayed there in the selected design.

We tried different browsers on computers in our network, cleared the cache and cookies of the browser, cleared the DNS cache - reactions 0.
What could be the problem? Why is this Wi-Fi network not displaying the new site design?

Answer 1

The key point is one local network. One provider. DNS has not been updated by the provider. It happens.