<p>You can use the <code>@</code> syntax to look up the domain from a particular server. If the DNS server is authoritative for that domain, the response will not be a cached result.</p>
<pre><code class="lang-auto">dig @ns1.example.com example.com
</code></pre>
<p>You can find the authoritative servers by asking for the <code>NS</code> records for a domain:</p>
<pre><code class="lang-auto">dig example.com NS
</code></pre>