Blacklists

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» AntiSpam DNSBL - Identifies spam sources - whether intentional or not - at the time they are sending spam. Not before and not after.
» Better Ethics Online - Publishes black list of spammers and seeks to promote online ethics.
» Blackholes.us - Publishing a variety of DNS blocklists including entire countries and ISP's.
» Blacklist of Internet Advertisers - To curb inappropriate advertising on usenet newsgroups and via junk e-mail.
» 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 IRC Network (OPM.BLITZED.ORG) - A dnsbl of open proxies (HTTP, Socks and wingate), populated by IRC connection scanners and spamtraps.
» Chinese and Korean Net Blocks - Lists IP blocks of China and Korea for those who want to avoid asian spam.
» Clueless Mailers - Offers background information on the worst of the new Internet abusers.
» 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.
» DNS Real-time Black List (DNSRBL) - DNSRBL publishes, via DNS, a list of IP addresses that are either direct SPAM sources or Dial-up (dynamic address) pools which would never be a source of non-SPAM eMail.
» 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.
» Easynet Nederland (easynet.nl) Spamlists - DISCONTINUED DEC 1 2003
» Electric Eye Ultimate Banned List - A manually updated and verified online database of spammers. Provides email address and domain blocklist.
» Fabel - Relaytest - List of open relays. Only one kind of test is done to see if the mail is relayed or not.
» Five Ten - Local Black Holes - Blacklist that includes dialup equivalent ip addresses, individual spam sources, netblocks that refuse to remove spammers, bulk mailers that don't require confirmed opt-in, output servers from multi-stage open relay chains and single stage open relays not
» Known Spammers List - List of emails and addresses of persons or organizations known to spam.
» MAPS Dial-up User List (DUL) - An IP blacklist of dialup-using "stealth" spammers and email trespassers.
» MAPS Realtime Blackhole List (RBL) - Lists email sites which have refused to limit their relaying, leaving the potential for their use as spam gateways.
» MAPS Relay Spam Stopper (RSS) - The RSS is a list of email relays which have been used to send spam, for use in blocking spam by blocking mail which have gone through those sites.
» Mail Abuse Prevention System - MAPS aims to defend the Internet from spammers by educating ISPs and providing real time blocking lists of known spam sources.
» MailPolice RHS-BL - RHS-style lists of domains which have sent spam to MailPolice customers. Currently divided into two lists, bulk senders - domains associated with bulk mail - and pornography - domains associated with sending and hosting pornographic content.
» Not Just Another BlackList (NJABL.ORG) - Spam blocking blacklist of open relays, dial-ups, and direct spam sources.
» Open Relay Check - Known open relay list.
» Open Relay Database (ORDB) - A validated database of mail servers that permit third-party relay. Also in Francais, Nederlands and Dansk.
» OpenRBL DNS Lookup - Enter an IP address or a hostname to find out which blacklists (if any) list it.
» Passive Spam Block List (PSBL) - The Passive Spam Block List, or PSBL, uses the Spamikaze software. If one spamtrap receives email from a certain IP address, then that IP address gets listed. After a certain time, the IP address is automatically dropped from the list. However, one of the
» RBL-Type Services - A listing of sites offering spam-related filter / blackhole lists.
» Relays.visi.com - Blacklist of open relaying mail servers that have recently transmitted spam.
» Spam & Open Relay Blocking System (SORBS) - Lists Open Relays and Open Proxies (Open HTTP Proxy Servers and Open SOCKS Proxy Servers). SORBS only scans a host when it attempts to send mail to one of the feeder servers.
» Spam Filtering @ Monkeys.Com - Unsecured Proxies List - Lists open proxies. An open proxy of one kind or another is bad because spammers may use it to send out massive amounts of unsolicited bulk e-mail spam.
» Spam Prevention Early Warning System (SPEWS) - SPEWS maintains a list of known spam sources and spam friendly hosts so that e-mail can be rejected from these problem sites.
» Spam Support Permanent Blocklist - A permanent blocklist of spam supporting web hosts and ISPs.
» SpamCop - Blocking List Information - This list contains IP addresses which have been reported to SpamCop as carriers of spam (source of e-mail or verified, open relay). Some of these reports now come from spamtraps (email addresses used strictly to receive spam).
» Spambag of the Month - Makes examples of people who feel the need to send unsolicited emails. Sample emails and follow-up information.
» Spambag.org - Personal (DNSBL) list of abusive networks that the author blocks from sending mail or accessing his web servers.
» Spamerang - A call for all internet users to turn the spammers' own email addresses into spam bait.
» Spamhaus Block List (SBL) - All IPs on the SBL belong to known spammers, spam gangs, or spam support services. The SBL includes IPs from both the ROKSO database and IPs of spam services listed in the Spamhaus database.
» Spamware Vendor List - List of live spamware sites and related links.
» Spamware.org - List of known bulk email software regarded as Spamware.
» The Abusive Hosts Blocking List (AHBL) - Publishes a list of known abusive hosts (open relays, open proxies, spam sources, DoS drones, and more) in various forms including a DNSbl.
» The DNSBL countries.nerd.dk - An IP-to-country DNS mapping service so you can choose to block a specific country or countries.
» The South Korea Blocking List - Blocking list to filter out Korean spam.
» The Spamhaus Project Register of Known Spam Operations (ROKSO) - The Spamhaus Project's Register Of Known Spam Operations (ROKSO) Database. ROKSO collates evidence on known hard-line spam outfits that have been thrown off Internet Service Providers over three times.
» UCEPROTECT Network - Three different Blacklists made in Germany available for Download (Wget), Rsync or use by DNS.
» Vox - DNSBL Designed to Aleviate Spam - Vox is a DNSBL based of received email headers along with frequency on the phydiux.com network of sites.
» Whois-Details for Blacklisted Spam Domains - List of domains that have been advertised via spam, with name server, registration date, registrant. This list is updated daily.
» 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.
» ip4r (DNSBL-style) DNS lookups - List, in table form, of blacklists. Includes table with the name of the blacklists, their lookup domains, the IP that is returned in case of a match and a description.
» rfc-ignorant.org - The home for domains who don't play by the rules. A number of lists (at present "dsn", "abuse", "postmaster", "whois" and "ipwhois") which contain domains or IP networks whose administrators choose not to
» xbl.selwerd.cx (eXtreme spam Blocking List) - Providers that let users spam selwerd.nl, selwerd.cx, flits.rug.nl and other spamtraps and ignore reports, host spamvertized pages or pages selling spamware get listed. Using xbl.selwerd.cx risks missing a lot of legitimate e-mail.