IPBLOCKLIST is a non-profit cybersecurity organization dedicated to improving server security across the Eurozone and Europe. Our mission is to protect users and businesses from cyber threats by freely providing one of the most effective lists of malicious IPs and CIDR ranges.

To help secure your servers, we provide a "blocklist" of malicious IP ranges (CIDR) and IPs, updated and compiled every hour from our own detection network, verified sources, and hosting providers participating in the project.

If you use an iptables firewall, it is strongly recommended to use ipset, which is designed to efficiently handle these very large lists of IP addresses.