title: Python dns.resolver of a NS doesn't work on subdomains?
body: <p>I'm trying to get the NS of a subdomain, but I get a <code>NoAnswer</code> Exception.</p>
  
  <p>I suspect it's because asking for the NS is only working on the root domain, but how can I do then?</p>
  
  <p>Is there a way to achieve it using <code>dnspython</code> or do I have to remove each subpart until the NS work?</p>