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Free Tools / Domain Blacklist Checker

Domain Blacklist Checker

Enter a domain to see if it's listed on common domain-based blacklists.

How it works: This tool checks DNS-based blacklists (DNSBLs) by querying the domain directly. A listed result means the domain appears on that blacklist. Clean means it was not found.

This is a free tool intended for initial diagnostics. For continuous monitoring, consider our Malicious Domain Alerts service.