Network tool

IP Blacklist Check

Check a public IPv4 address against a deliberately limited set of public DNS blacklists.

What this result means

Blacklist databases differ, listings can be stale, and an absence from the checked list does not guarantee email deliverability or a positive reputation.

What to do next

If an IP is listed, inspect its network details and follow the relevant blacklist operator's removal process. If it is not listed, review reverse DNS and DNS configuration when troubleshooting mail or reputation.

IP Lookup

Learn more: Why Is My IP Address Blacklisted? →

Related tools

Reverse DNS · DNS Lookup.