Ad unit test page
Each box is the real iframe a partner would run. Taps open the demo offer in a new tab, and nothing posts or dials.
Rule that fired on the 300x250: checking
What a partner pastes
Simple version:
<iframe src="https://hellointent.com/u/demo/300x250/your_subid" width="300" height="250" title="Advertisement" style="border:0"></iframe>
With the loader, which removes the box when there's no ad:
<script async src="https://hellointent.com/hi.js" data-partner="demo" data-size="300x250" data-sub="your_subid"></script>