This is a personal list of address that appear to have dynamically- or procedurally-assigned reverse DNS entries. The list operator suggests that it should not be used to block email.
To get unlisted the IP address you're requesting to be removed should have a valid reverse DNS entry which doesn't appear to be dynamically assigned.
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!