Blacklist Lookup
Check an IPv4 address against a small set of public DNS-based blocklists.
Run Blacklist Lookup
How to use Blacklist Lookup
Enter the requested details, run the check, and review the result before changing production files. Use the findings as a focused diagnostic, then confirm important changes with a full website audit and a fresh crawl.
What this tool is useful for
- IP resolution
- Spamhaus ZEN DNSBL
- SpamCop DNSBL
- SORBS DNSBL
Important: A focused tool checks one SEO area. It does not replace a complete crawl, Search Console data, analytics, accessibility review, or human content review.
Blacklist Lookup FAQ
Is this tool free?
Yes. You can run the available check without a paid subscription. Usage limits may apply to remote requests and third-party services.
Can I publish the generated result directly?
Review it first. Generated rules, markup, keywords, redirects, or recommendations should be checked against your website and tested before production use.
What should I do after the check?
Fix the highest-impact issue, retest the affected URL, and then run the full audit to identify related technical, content, trust, and conversion issues.