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<div class="moz-cite-prefix">A zone has at least two NS records,
three is better.<br>
So the former is more suitable from what I know.<br>
And for the latter, some registrars don't let you register a
nameserver with more than one IP (for example Namecheap does
this), so each nameserver with just one IP get easier setup.<br>
<br>
<br>
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<blockquote
cite="mid:BC5F929B-7FD6-4EA7-8108-11268A13D13F@gmail.com"
type="cite">
<pre wrap="">example.com. 86400 NS a.example.net.
example.com. 86400 NS b.example.net.
example.com. 86400 NS c.example.net.
a.example.net. 3600 A 1.1.1.1
b.example.net. 3600 A 2.2.2.2
c.example.net. 3600 A 3.3.3.3</pre>
</blockquote>
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