DNSBL Lookup allows you to lookup for blacklisted IP addresses against 60 most active DNSBLs that currently on the internet.

How to Use?

  • Enter any suspicious IP address that you wanted to check into the form field and press the "Lookup" button.
  • An animated loading bar will appear.
  • Be patient, as the lookup may take up to a minute to complete.
  • If the IP address appear on any DNS blacklist, the status is shown as "Listed" or "Not Listed", if it isn't blacklisted.
  • Click on various DNSBLs and follow the link to their website for further explanation.

Under normal circumstances, if you never send any unsolicited bulk email to anyone or you have not participated in any form of spam campaign, this tool need not be used.