title: Regex to Match the first 6 digits of a phone number
body: <p>ok guys I have a list of Phone Numbers like:</p>
  
  <pre><code>2017582043
  3928530146
  2791047392
  7684038294
  </code></pre>
  
  <p>and the list goes on an on</p>
  
  <p>what I am trying to do is loop thru the list returning the first 6 digits of each number</p>
  
  <p>May somebody help me figure out that it the correct regex for that?</p>