How to disable one of the url addresses?

Question

Domain Name System

Greetings! The task may sound crazy, but it exists

There is a domain.com address and there is a domain.com/folder/ address | domain.com/textfile.txt
It is necessary to completely hide the domain.com address, i.e. so that the browser gives an ERR_NAME_NOT_RESOLVED (dnserror) error, but the other two addresses work normally.
ps It's all on the same domain.

I can not figure out which way to dig, I will be grateful for any advice)

Answer 1

This cannot be done because these are different parts of the process. DNS resolve knows nothing about uri and http. The reverse is also true - if we are processing an http request, then dns resolve has already been successfully completed and we cannot get this error

Answer 2

Simulate the appropriate error page. Preferably considering User-Agent.

Answer 3

None. If the browser cannot get the IP of the server by the domain name, then it will not be able to reach any content that lies on this domain.

Answer 4

i.e. for the browser to give an error ERR_NAME_NOT_RESOLVED (dnserror)

For your task by URL, this is not possible. If to do inaccessible, then all domain entirely.

I can not figure out which way to dig, I will be grateful for any advice)

towards the web server. For example, Nginx has a special code 444 to close the connection.