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Check if your IP address is listed on major email and spam blacklists.
Email blacklists (DNSBLs) are databases of IP addresses known to send spam or malicious emails. Internet service providers (ISPs) and email services use these lists to filter out unwanted emails.
Our IP Blacklist Check Tool scans over 50 major DNS-based Blackhole Lists (DNSBL) and Real-time Blackhole Lists (RBL) to determine if your IP address or domain has been flagged for spam, malware, or suspicious activity. Being on a blacklist can severely impact email deliverability, preventing your messages from reaching recipients' inboxes. This tool provides a comprehensive health check of your IP reputation, helping you identify and resolve delivery issues. It checks major databases including Spamhaus, Barracuda, SORBS, SpamCop, and many others to give you a complete reputation analysis.
Enter an IP address or domain name to checkOur system queries over 50 reputable DNSBL/RBL databases in real-timeWe check if your IP is listed on spam, malware, or botnet listsResults are displayed instantly showing "Listed" or "Clean" statusDetailed reports include which specific list flagged the IPLinks and instructions for delisting are provided where available
Troubleshoot why emails are going to spam folders, verify new mail server IP reputation, and diagnose delivery failures.
Identify if internal systems are part of a botnet, check for compromised servers, and monitor network security health.
Ensure shared hosting IPs aren't affecting your brand and verify reputation status after cleaning malware hacks.
We don't log or store any IP addresses or search queries
All data is transmitted over encrypted HTTPS
Results are generated in real-time, not from a database
