It can take 5-20 minutes for server setting changes to take effect, and it also may take a few days for any caching to expire. Sometimes restarting your computer helps clear the cache.
You can use the snapshot tool to see what your domain is showing using the current dns settings:
How do I access the website snapshot tool?
Our website snapshot tool allows you to see what your website homepage looks like. The reason you may want to use this tool is to see if you're seeing a different - cached - version of your website.
To see your website's snapshot, please follow these steps: