My iPhone shows a different web landing page

I recently created a webpage and while the content was propagating, it showed some information about how to change name server, etc.

Later on, I was able to see the real page both on my Mac and on a PC.

However my iPhone was still showing the same original information about name server and stuff.

I thought it had to do with my home WiFi but now I am using another WiFi and I still see it.

I already deleted all Safari offline pages, turned it off and on many times but nothing seems to work.

What am I missing?