title: What is the correct term for apex/naked/bare/root domain names?
body: <p>When you search term <code>Apex Domains</code> on Google Search, the top page you get is <a href="https://help.github.com/en/articles/about-supported-custom-domains" rel="noreferrer">https://help.github.com/en/articles/about-supported-custom-domains</a>, which explains the concept as:</p>
  
  <blockquote>
    <p>An apex domain is a root domain that does not contain a subdomain part. Apex domains are also known as base, bare, naked, root apex, or zone apex domains. In DNS provider settings apex domains are sometimes symbolized by an @ symbol. For example:</p>
    
    <ul>
    <li>example.com is an apex domain because it doesn't have any subdomain 
    parts.</li>
    <li>Whereas www.example.com is not an apex domain because it contains the > 
    subdomain part www.</li>
    </ul>
  </blockquote>
  
  <p>This description alone says this concept is also known as</p>
  
  <ul>
  <li>base domains</li>
  <li>bare domains</li>
  <li>naked domains</li>
  <li>root apex domains</li>
  <li>zone apex domains</li>
  </ul>
  
  <p>Is there really not a well-recognized and established name for this concept?</p>