Featured snippets are a quick summary that is placed at the top of the SERPs. A single website is linked out from the featured snippet - often referred to as position #0.
A crown icon will indicate if a featured snippet was found for the tracked keyword.
The featured snippet icon in SerpBook will only indicate that there is a featured snippet for this keyword. It does not mean the keyword is ranking with a snippet.
If your site is found in the featured snippet, you will see a scissor icon under Features column.
Note, whether you are tracking a broad domain, or an exact URL, this will respect the correct tracking.
We hope you find this helpful! If you need any further assistance, please contact us and we'll be more than glad to help you out.