Direct IP Address Access

We usually type the website’s URL (Address of a website) in the address bar when we want to visit any specific website. But would a web server actually “Know” if we used direct IP address instead? The SuperUser Q&A forum has posted the answer to a confused reader’s question.

The Question:

SuperUser reader Joseph want to know wants to know how web servers can tell if you are using direct IP address access or not.


How do web servers know if you are using direct IP address access or not?


SuperUser contributor iAdjunct has tried to answer for us.



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  1. What I’d really like to know is how some sites know whether you’re using a vpn or not? Is it strictly webrtc, or did they find some manner of doing a lookup through an api to see who the ip range has been allocated to by the Internet registry governing the IP block? Is there another way?


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