IBM DNS Blacklist IPv4

This list is being operated by IBM Germany. There is not much information on how it works.

You can get yourself removed from the list by following the instructions on their website.

Are you the maintainer of dnsbl.cobion.com?

Is the information on our site wrong or incomplete? You don't want us to monitor your blacklist? Or do you operate a similar blacklist? We would like to hear from you!