title: After adding CNAMEs, the WWW version of domain doesn't work. Any ideas why?
body: <p>I'm using Cloudfront as a CDN, and I'm using CNAME entries at my hosting company to show my domain name in lieu of the cloudfront address.</p>
  
  <p>To that end, my DNS entries at the host are formatted like this:</p>
  
  <pre><code>cdn.example.com CNAME 14400 123456789.cloudfront.net
  
  www.cdn.example.com CNAME 14400 123456789.cloudfront.net
  </code></pre>
  
  <p>After waiting for them to propagate, I tested both at DNSchecker.org.</p>
  
  <p>The first version (cdn.example.com) points to the CloudFront distribution as I'd hoped.</p>
  
  <p>But, the second version (www.cdn.example.com) doesn't point anywhere.</p>
  
  <p>Any idea why one would point to CloudFront but not the other?</p>