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Blacklist Lookup: Check IP Spam Lists

Check whether a domain's server IP is listed on the main spam and email blacklists (DNSBL).

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Blacklist Lookup


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About Blacklist Lookup

If your server's IP address appears on a spam blacklist, emails from your domain may land in spam or be rejected. The tool checks the IP of your domain against dozens of public DNS blacklists and shows where it is listed, so you know where to request removal.

How to use the Blacklist Lookup

  1. 1Enter the web address you want to check, for example example.com, in the box above.
  2. 2Click the button to run the check. Most results appear within a few seconds.
  3. 3Read the results, then use Try New URL to test another page or a competitor.

Frequently asked questions

My server is listed on a blacklist. What should I do?

Find out why: a hacked site, an infected mailbox or a bad neighbour on shared hosting. Fix the cause, then use the removal form of each blacklist. Some lists, like UCEPROTECT level 3, list whole hosting ranges.

Does a blacklist affect my website's SEO?

Usually not for Google rankings. Blacklists mainly affect email delivery, so messages from your domain may land in spam or be rejected.

Free tool by Blue Mint · Updated November 2026

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