Block Malicious IP address with Sonicwall TZ400

Hello all,

I receive an email every couple weeks from an agency who provides malicious URL/IP addresses to my agency. I have been adding these URLs and IPs to the content filter block list, but now I'm under the impression I need to block the addresses completely using a rule to block all connections between the URLs and IPs. I've researched online and found the solution,

• Firewall > Access Rules
• Click Add rule
• Action - Deny
• From - LAN
• To - WAN
• Destination > Create New Network
• Assign a Name for the IP/Site
• Zone Assignment - WAN
• Type - Host or network if you want to block the entire IP range
• Enter the IP of the site or network range
• Click OK and then click Add

But I'm wondering if there is a way to upload a text file or point to a file instead of creating a rule for every URL and IP. Is there a way to do this without manually adding every address or range?

Thanks!