Check if an IP address is listed on any DNS-based blacklists (DNSBLs). These databases track IP addresses associated with spam, malware, or other malicious activities. Email servers and security systems use these lists to filter unwanted traffic.
Enter an IP address below to scan against 17 major blacklist databases.
What are DNS Blacklists?
DNS-based Blackhole Lists (DNSBLs) are databases of IP addresses associated with spam, malware, or other malicious activities. Email servers query these lists in real-time to determine whether to accept or reject incoming mail. Being listed can significantly impact email deliverability and may indicate security issues with your network.
Why Am I Listed?
Common reasons for blacklisting include: sending spam emails, hosting malware or phishing sites, compromised servers or botnets, dynamic IP ranges used for residential connections, or poor email authentication (SPF, DKIM, DMARC). If your IP is listed, visit the specific blacklist's website to request delisting after resolving the underlying issue.