How to display client dns in js?

Question

Domain Name System

Is there any api, or methods for displaying the dns client? it is possible on jquery
that it would be like here https://whoer.net/ru

Answer 1

take the ip of the client, perform a reverse DNS query and see the address of the server serving this zone.
here it is called "ptr"
https://mxtoolbox.com/NetworkTools.aspx