How to access the contents that are created by custom content type using module
You can use Views to list content of custom content type.

Update(Programmatically load nodes):

&lt;?php
$type = "custom_content_type";
$nodes = node_load_multiple(array(), array('type' =&gt; $type));
foreach($nodes as $node):
?&gt;
&lt;?php print $node-&gt;nid; ?&gt;
&lt;?php print $node-&gt;title; ?&gt;
&lt;?php endforeach; ?&gt;


Ref: https://api.drupal.org/api/drupal/modules!node!node.module/function/node_load_multiple/7