title: How to validate a number with preceding zeros with regex
body: <p><strong>I have the following rule:</strong></p>
  
  <p>Don't allow numbers of any sequence with 4 or more 0s at the beginning.</p>
  
  <p><strong>So this number:</strong></p>
  
  <p>0000438967 </p>
  
  <p>will fail validation (4 zeros)</p>
  
  <p><strong>But this number:</strong></p>
  
  <p>0004389678 (3 zeros)</p>
  
  <p>Will pass validation.</p>
  
  <p>the reason for this question was I needed verification on whether I was doing it correctly as, when checking in online Regex validators, I was getting mixed verification results. I know it sounds like a simple question but verification from others is important.</p>
  
  <p>thanks
  Russ</p>