Multi level sub domains as nameserver
This is just a general knowledge question. Why havent I ever come across any nameservers of this type: ns1.ns.domain.com?

Is it a convention to use only one leveled nameservers?
Multi level sub domains as nameserver
===

This is just a general knowledge question. Why havent I ever come across any nameservers of this type: ns1.ns.domain.com?

Is it a convention to use only one leveled nameservers?