Should I register namehost or not?

[MontyRee]

Hello, all.


According to some domain service provider,
if I operate dns server, I should register the DNS information with the namehost from the registrar.
and should be queried like below. 

http://reports.internic.net/cgi/whois?whois_nic=ns-ext.isc.org.&type=nameserver

ns-ext.isc.org is a nameserver of the isc.org.


But, when I query some nameservers of the famous domain, some queries well but some didn't.


So, I don't know that should I register namehost or not?
If then, why should I register?
and some nameservers that didn't register, how to services well?
 


Thanks for your help in advance.

 


 
 


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