http://www.testingmcafeesites.com/testrep_yellow.html

This is an example URL which has a medium risk reputation Score.
This example URL is used to test web reputation filtering, therefore we have not assigned a content category and the URL will be presented as a medium risk, uncategorized URL.This page simply displays this text without any specific content on it, it is just for testing purpose

If you can see this text, it was not blocked by any filter!