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What IP addresses do I need to whitelist in our security firewall for ProProfs?

ProProfs understands that uninterrupted service is of the utmost importance for our customers and IP whitelisting is one of the most effective ways to prevent any accidental service interruption. 
 
We use CloudFlare to optimize the delivery and security of our pages. Please refer to the link below for a list of IP address ranges we use and recommend you whitelist on your security firewall, to save you time and avoid unnecessary service interruptions:
 
List of IP address ranges we use: CloudFlare IP Ranges