Check any domain or IP address against 50+ real-time DNS blacklists. See exactly which lists have flagged your sending infrastructure and why.
50+ blacklists checkedDNS-based real-time lookupsWorks for domains and IPs
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Check any domain or IP against spam blacklists
Enter a domain name or IP address and we'll query 50+ real-time blacklists — including Spamhaus, Barracuda, SORBS, and more — and show you exactly where it's listed.
Checking 50+ blacklists… This takes a few seconds.