Check if your IP address or email domain is listed on DNS-based blacklists. Scan against 50+ reputable blacklist services including Spamhaus, SORBS, SpamCop, and more for comprehensive reputation analysis.
Detailed results from all blacklist services
| Service | Status | Details | Description |
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An error occurred while checking blacklists.
DNS-based Blackhole Lists (DNSBLs) are databases that contain IP addresses or domains known for sending spam, malware, or other malicious activity. Email servers and security systems use these lists to block or flag suspicious traffic.
Our tool performs DNS lookups against multiple blacklist services. For an IP address like 192.168.1.1, it checks domains like 1.1.168.192.blacklist.example.com. If the domain resolves, the IP is listed.
Some lists may have outdated information or false positives. Always verify with the blacklist provider.
If your IP is incorrectly listed, contact the blacklist maintainer for removal instructions.
Keep your systems secure, monitor for abuse, and follow email best practices to avoid blacklisting.
This tool is for legitimate network administration and security purposes only.