IPQS IP Address Block List is a commercial threat intel feeds solution by IPQualityScore. SSLBL - SSL Blacklist is a free threat intel feeds solution. Features, integrations, deployment and the company behind each one, side by side.
IP address blocklist service for identifying and blocking fraudulent IPs
A project that detects malicious SSL connections by identifying and blacklisting SSL certificates used by botnet C&C servers and identifying JA3 fingerprints to detect and block malware botnet C&C communication.
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Based on what each listing shows: deployment, company size, price and open source.
SSLBL - SSL Blacklist fits if you need a free product.
Common questions when comparing IPQS IP Address Block List vs SSLBL - SSL Blacklist for threat intel feeds.
IPQS IP Address Block List: IP address blocklist service for identifying and blocking fraudulent IPs, built by IPQualityScore.
SSLBL - SSL Blacklist: A project that detects malicious SSL connections by identifying and blacklisting SSL certificates used by botnet C&C servers and identifying JA3 fingerprints to detect and block malware botnet C&C communication.
The table above shows where their features, integrations, deployment and company size fit differ.
Often, yes. IPQS IP Address Block List and SSLBL - SSL Blacklist are both Threat Intel Feeds products, and both cover Botnet. Key differences: IPQS IP Address Block List is Commercial while SSLBL - SSL Blacklist is Free. Use the table above to see where features, deployment and company size fit differ.
No Threat Intel Feeds shortlist yet. This is the closest one.
Updated 2026-11-01
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