Blacklists Compared

13 March 2004

[ Fighting Spam | Dialup Zones | Blacklists Compared | Current Blacklist Comparison | Sendmail Configuration ]

Survey results for all known public IP-based DNS blacklists. Lookups were done on connecting IP addresses. The "union of most IP zones" line excludes the exemptions.ahbl.org and query.bondedsender.org zones because they are not blacklists, and because it is too aggressive to be widely useful the block.blars.org zone is also excluded.

HitsDNS Zone
23841(total number of IP addresses tested, including 376 at SDSC)
18682(union of most IP zones)
13328t1.dnsbl.net.au
11232blackholes.five-ten-sg.com (union of all results)
11047block.blars.org
10448dnsbl.sorbs.net (union of all results)
10182blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
9745sbl-xbl.spamhaus.org (union of all results)
8427cbl.abuseat.org
8390xbl.spamhaus.org
8390sbl-xbl.spamhaus.org (result 127.0.0.4 = Spamhaus XBL)
7035dynablock.njabl.org
6953dnsbl.sorbs.net (result 127.0.0.10 = dialup)
6789unconfirmed.dsbl.org
6628dsbl.dnsbl.net.au
6628list.dsbl.org
4881no-more-funn.moensted.dk (union of all results)
4418dnsbl.njabl.org (union of all results)
3619bl.spamcop.net
3556cn-kr.blackholes.us (union of all results)
3223sbl.csma.biz
3015ipwhois.rfc-ignorant.org
2827l2.spews.dnsbl.sorbs.net
2743dnsbl.ahbl.org (union of all results)
2600dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2573spews.dnsbl.net.au
2476l1.spews.dnsbl.sorbs.net
2471no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
2362psbl.surriel.com
2040pdl.blackholes.us
1912cn-kr.blackholes.us (result 127.0.0.2 = China)
1912china.blackholes.us
1836dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1809spam.wytnij.to
1729no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1644cn-kr.blackholes.us (result 127.0.0.3 = Korea)
1644korea.blackholes.us
1633dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1600unsure.nether.net
1591dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1557korea.services.net
1537sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1536sbl.spamhaus.org
1404rmst.dnsbl.net.au
1274bl.csma.biz
1246spamsources.fabel.dk
1190dnsbl.njabl.org (result 127.0.0.3 = dialup)
1146wpbl.dnsbl.net.au
1007comcast.blackholes.us
952dnsbl.sorbs.net (result 127.0.0.6 = spam source)
903dnsbl.ahbl.org (result 127.0.0.4 = spam source)
774ybl.megacity.org
752blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
709relays.visi.com
699blacklist.spambag.org
660spamguard.leadmon.net (union of all results)
579spamguard.leadmon.net (result 127.0.0.2 = dialup)
545opm.blitzed.org
516ricn.dnsbl.net.au
510probes.dnsbl.net.au
491cw.blackholes.us
476taiwan.blackholes.us
462dnsbl.njabl.org (result 127.0.0.4 = spam source)
408rr.blackholes.us
404level3.blackholes.us
403brazil.blackholes.us
395pss.spambusters.org.ar
341blackholes.intersil.net
318rbl.rangers.eu.org (union of all results)
286no-more-funn.moensted.dk (result 127.0.0.9 = misc)
277hil.habeas.com
269work.drbl.croco.net
264japan.blackholes.us
250charter.blackholes.us
230no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
216blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
214dnsbl.antispam.or.id
208no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
198dialup.blacklist.jippg.org (union of all results)
197dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
196wanadoo-fr.blackholes.us
186dnsbl.njabl.org (result 127.0.0.2 = source or relay)
167russia.blackholes.us
156tr.countries.nerd.dk
154dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
153turkey.blackholes.us
149qwest.blackholes.us
148mexico.blackholes.us
148multihop.dsbl.org
146rbl.rangers.eu.org (result 127.0.0.4 = dialup)
136hongkong.blackholes.us
132interbusiness.blackholes.us
126argentina.blackholes.us
124verio.blackholes.us
1193y.spam.mrs.kithrup.com
111relays.ordb.org
109rbl.rangers.eu.org (result 127.0.0.3 = spam haven)
108dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
105mail-abuse.blacklist.jippg.org
101osps.dnsbl.net.au
101ohps.dnsbl.net.au
94internap.blackholes.us
85xo.blackholes.us
80infolink.blackholes.us
80relays.nether.net
80spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
80query.bondedsender.org (not a blacklist!)
75flowgoaway.com
71osrs.dnsbl.net.au
62telstra.blackholes.us
62dun.dnsrbl.net
59dnsbl.sorbs.net (result 127.0.0.5 = open relay)
59ph.rbl.cluecentral.net
56malaysia.blackholes.us
55he.blackholes.us
54sbbl.they.com
48singapore.blackholes.us
48rogers.blackholes.us
43bellsouth.blackholes.us
43a2000.blackholes.us
40nigeria.blackholes.us
40inflow.blackholes.us
38rdts.dnsbl.net.au
37rbl.rangers.eu.org (result 127.0.0.2 = spam source)
36above.blackholes.us
35blackholes.brainerd.net
34blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
31cybercon.blackholes.us
30dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
29swbell.blackholes.us
27thailand.blackholes.us
27rackspace.blackholes.us
27covad.blackholes.us
27blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
26broadwing.blackholes.us
24spam.exsilia.net (union of all results)
23yipes.blackholes.us
22blackholes.uceb.org (union of all results)
20satos.rbl.cluecentral.net
18rbl.rangers.eu.org (result 127.0.0.10 = virus notices)
15blackholes.uceb.org (result 127.0.0.2 = open relay)
14spam.exsilia.net (result 127.0.0.2 = spam source)
14exemptions.ahbl.org (not a blacklist!)
12bl.deadbeef.com
10spamsources.yamta.org (result 127.0.0.2 = spam source)
10affinity.blackholes.us
10spam.exsilia.net (result 127.0.0.3 = virus source)
9burst.blackholes.us
9owps.dnsbl.net.au
9blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
8olm.blackholes.us
8navisite.blackholes.us
8maxim.blackholes.us
7pajo.blackholes.us
7eli.blackholes.us
7blackholes.uceb.org (result 127.0.0.3 = spam source)
6blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
5epoch.blackholes.us
5relays.bl.kundenserver.de
4rbl.rangers.eu.org (result 127.0.0.5 = relay output)
4no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
4blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
3rbl.rangers.eu.org (result 127.0.0.1 = misc)
3no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
3dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
2blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1ciberlynx.blackholes.us
1rbl.rangers.eu.org (result 127.0.0.9 = virus source)
1omrs.dnsbl.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
1spam.dnsrbl.net
1dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)

The blackholes.intersil.net zone "lists entrenched spammers, mainsleaze and mainsleaze wannabes who have pestered users at Intersil." The flowgoaway.com zone lists FloNetwork systems.

Survey results for all known public domain-name-based DNS blacklists. Lookups were done on the domain names of connecting IP addresses.

HitsDNS Zone
23841(total number of IP addresses whose names were tested, including 376 at SDSC)
11182(union of all domain zones)
7680abuse.rfc-ignorant.org
6564rddn.dnsbl.net.au
3422whois.rfc-ignorant.org (union of all results)
2419whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1003whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
774bulk.rhs.mailpolice.com
375blackhole.securitysage.com
324rhsbl.ahbl.org
314bl.deadbeef.com
41porn.rhs.mailpolice.com
15postmaster.rfc-ignorant.org
13dsn.rfc-ignorant.org (zone not intended for this use)
3bogusmx.rfc-ignorant.org

Survey results for all known public domain-name-based DNS blacklists. Lookups were done on SMTP sender domains.

HitsDNS Zone
17299(total number of domains tested, including 401 at SDSC)
5456(union of all domain zones)
1921whois.rfc-ignorant.org (union of all results)
1641whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1595abuse.rfc-ignorant.org
1378bulk.rhs.mailpolice.com
961rhsbl.ahbl.org
849blackhole.securitysage.com
770postmaster.rfc-ignorant.org
683dsn.rfc-ignorant.org
280whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
251bogusmx.rfc-ignorant.org
92bl.deadbeef.com
69porn.rhs.mailpolice.com
23rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
23rhsbl.sorbs.net (union of all results)
17rddn.dnsbl.net.au (zone not intended for this use)
1rhsbl.sorbs.net (result 127.0.0.12 = domain does not send mail)
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 28 March 2004.