Blocking Blacklisted IPs using SCSP

Is it possible to block a list of IPs (Close to 30K) using SCSP Agent? I found the option of adding Blacklisted IPs in Detection Policy under the Windows Base Policy but could not find the same under any Prevention Policy.

My understanding is, that SCSP relies on Whitelist to allow traffic from specific machines rather than Blacklist to block traffic from a handful of machines and allowing the rest. Also, please do share the format in which the CSV file is configured to add the Batch IP List.

Thanks in advance,

Amit Bhatnagar