How to assign root domain instead of subdomains?

Question

Domain Name System

In order to add a domain to CLOUDFLARE, it must be the root domain. And I need only my sub domain to be added. How to change sub to root?

Answer 1

Probably not "different", but "other"?
Create NS type records pointing to the required DNS servers:

subdomain 	NS 	ns1.example.net
subdomain 	NS 	ns2.example.net