This shows that the domain is being blocked. IF you are able to load that specific domain in your browser, the browser likely has the IP in cache from before you blocked it.
Let's get back to your original problem. Clear the browser cache, re-launch the browser and load the web page. Use these tools to help determine why things are not being blocked as you expected and if other domains are providing the content.
You can also enable regex debugging to get visibility on what regex filters are blocking content - this can help identify ineffective regex.