IP Reputation Check Online

The IP Reputation service on 101IP checks an IP address against eight key threat databases: CBL, Spamhaus XBL/SBL, Blocklist.de, SORBS, Barracuda, and others. Connection type flags (proxy, hosting, mobile) are also shown.

What the service checks

• CBL (Abuseat) — infected devices and open proxies;
• Spamhaus XBL — exploits and botnets;
• Spamhaus SBL — IPs involved in spam campaigns;
• Blocklist.de — IPs attacking servers (SSH brute force, FTP, web);
• Barracuda Reputation — email reputation of an IP.

When to check IP reputation

• Your server's email is landing in spam folders;
• You want to verify a newly leased IP is not "dirty";
• Analyzing suspicious activity in server logs;
• Security assessment before purchasing an IP block.