In the below table, the left image (goodimage.jpg) will display, but the right image (badimage.jpg) will not display.

If you request badimage.jpg directly (https://www.akamaitools.com/images/badimage.jpg), you will get an "Access Denied" page saying "This content has been blocked by Akamai's Global Request Control".

For testing, you can see badimage.jpg by specifying "bypass_grc=true" as a query parameter (https://www.akamaitools.com/images/badimage.jpg?bypass_grc=true). Don't worry - it's not really a 'bad' image.

goodimage.jpg
badimage.jpg