DNSBL.im is a service designed to keep spam away from instant messaging protocols such as IRC.
While existing blacklists catch a lot of spam, DNSBL.im partners up with various data sources to catch abusive hosts that are discovered out in the wild.
We have tested many blacklists against proxies from our data sources and found that many proxies and almost all open routers still get through! Our project is aimed at catching those devices when spam strikes! Our partners provide results from various checks, scans, and real world attacks.
If you need help using the blacklist or would like to get to know us and the community visit us on IRC at irc.Buddy.IM / #DNSBL.im.