AntiSpam DNSBL
Identifies spam sources - whether intentional or not - at the time they are sending spam. Not before and not after.
bl.csma.biz - Spam Blacklist
As a public service, McFadden Associates maintains a free DNSBL blacklist. Anyone sending SPAM into their mail filters is automatically added for a period of thirty days.
Blackholes.us
Publishing a variety of DNS blocklists including entire countries and ISP's.
Blacklists Compared
Weekly reports of DNS blacklists lookups of IP addresses (and reverse DNS lookups) that made SMTP connections to the San Diego Supercomputer Center on that week. Useful for getting a grasp of the size of the various blacklists. Maintained by Jeff Makey.
Blitzed Open Proxy Monitor List
A DNS-based list of machines believed to run insecure proxies. These proxies have been abused in the past to either send spam or connect to an IRC network running a version of Blitzed Open Proxy Monitor.
Blockalert
Provides reports on whether there is recent spam activity within each IP block, especially spamvertised web site addresses. Check if you are sharing your address block with spammers.
Chinese and Korean Net Blocks
Lists IP blocks of China and Korea for those who want to avoid asian spam.
Composite Blocking List (CBL)
The CBL is a DNSBL which takes its source data from very large spamtraps, and lists IPs of open proxies and worms/viruses.
Distributed Server Boycott List (DSBL.org)
This list contains email servers which are non-secure and potentially servers with dumb and/or malicious users. It is purely composed of data DSBL receives; DSBL should never send out data by itself.
Drbcheck: Dr. Jørgen Mash's DNS Database List Checker
Lists all DNSbl's (RBL's) and enables users to make a query against all the lists.
Results: 1 2 3 4 Next
