title: Why different Google services has the same IP address?
body: <p>I'm starting to study DNS system and the way it works. I'm using <code>dig</code> on ubuntu to solve some domain names and I'm trying with different Google services.
  Even if services are totally different, it happened that I received the same IP address.</p>
  
  <pre><code>$ dig docs.google.com
  
  ;; ANSWER SECTION:
  docs.google.com.    264 IN  A   216.58.198.14
  </code></pre>
  
  <p>and</p>
  
  <pre><code>$ dig drive.google.com
  
  ;; ANSWER SECTION:
  docs.google.com.    264 IN  A   216.58.198.14
  </code></pre>
  
  <p>In other occasions, I received the same address trying to solve yet more services like <code>mail.google.com</code> or <code>maps.google.com</code>.</p>
  
  <p>Can anybody help me and explain me the way it works? Does this have anything to do with time?</p>
  
  <p>Thank you a lot.</p>