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Check if an IP or domain is listed on 5 major DNS-based blacklists (Spamhaus, SpamCop, SORBS, Barracuda, Surriel).
The blacklist check queries 5 major DNS-based blacklists (Spamhaus, SpamCop, SORBS, Barracuda, Surriel) to determine if an IP address is listed as a spam source. Being blacklisted can severely impact email deliverability. Note: this is not a comprehensive check of all existing blacklists.
Disclaimer: Results provided by this tool are for informational purposes only and do not replace professional technical analysis. This site is not responsible for decisions made based on this data. See our Terms of Service for more information.