Blacklists Compared

24 November 2007

[ 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 hostkarma.junkemailfilter.com (127.0.0.1 result), exemptions.ahbl.org, query.bondedsender.org, list.dnswl.org, accredit.habeas.com, iadb.isipp.com, and iadb2.isipp.com zones because they are not blacklists. Because it is too aggressive to be widely useful the l2.apews.org zone is also excluded from the union.

HitsDNS Zone
217737(total number of IP addresses tested, including 482 at SDSC)
210005(union of most IP zones)
190068l2.apews.org
185069zen.spamhaus.org (union of all results)
175563t1.dnsbl.net.au
145024pbl.spamhaus.org (union of all results)
137794sbl-xbl.spamhaus.org (union of all results)
137428zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
137255xbl.spamhaus.org (union of all results)
137233sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
137210cbl.abuseat.org
137054xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
122847dnsbl-3.uceprotect.net
117941dnsbl.sorbs.net (union of all results)
111896zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
111877dnsbl-2.uceprotect.net
111794pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
110270dnsbl.tqmcube.com (union of all results)
101239dnsbl-1.uceprotect.net
99313psbl.surriel.com
92539dnsbl.sorbs.net (result 127.0.0.10 = dialup)
90910no-more-funn.moensted.dk (union of all results)
81937dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
81377blackholes.five-ten-sg.com (union of all results)
81293ubl.unsubscore.com
79019no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
75796blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
47845hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
41488bl.spamcop.net
33270zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
33230pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
32997ix.dnsbl.manitu.net
30745db.wpbl.info
30615dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
26113dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
13012unconfirmed.dsbl.org
12993dsbl.dnsbl.net.au
12887list.dsbl.org
12424countries.blackholes.us (result 127.0.7.6 = Brazil)
11823mail-abuse.blacklist.jippg.org
10316countries.blackholes.us (result 127.6.4.3 = Russia)
9938tr.countries.nerd.dk
9441countries.blackholes.us (result 127.7.9.2 = Turkey)
9042no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
8377bl.spamcannibal.org
6847ips.backscatterer.org
5929dnsbl.tqmcube.com (result 127.0.0.5 = China)
5862rmst.dnsbl.net.au
5789countries.blackholes.us (result 127.1.5.6 = China)
5510countries.blackholes.us (result 127.4.8.4 = Mexico)
4408blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4211hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
4086list.dnswl.org (not a blacklist!)
4059dnsbl.njabl.org (union of all results)
4045korea.services.net
3908dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
3764dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3752countries.blackholes.us (result 127.4.1.0 = Korea)
3540countries.blackholes.us (result 127.0.3.2 = Argentina)
3423bl.csma.biz
3416sbl.csma.biz
3263probes.dnsbl.net.au
3148countries.blackholes.us (result 127.7.6.4 = Thailand)
2804dnsbl.ahbl.org (union of all results)
2681dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2292no-more-funn.moensted.dk (result 127.0.0.9 = misc)
2059spamsources.fabel.dk
1831hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1512countries.blackholes.us (result 127.3.9.2 = Japan)
1406countries.blackholes.us (result 127.4.5.8 = Malaysia)
1101blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1079countries.blackholes.us (result 127.1.5.8 = Taiwan)
700sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
698zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
684xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
494zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
487sbl.spamhaus.org
474countries.blackholes.us (result 127.3.4.4 = Hong Kong)
470sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
364no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
314blackholes.uceb.org (union of all results)
297no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
281blackholes.uceb.org (result 127.0.0.6 = spam haven)
280countries.blackholes.us (result 127.7.0.2 = Singapore)
262aspews.ext.sorbs.net
243dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
239dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
225work.drbl.croco.net
161accredit.habeas.com (not a blacklist!)
154query.bondedsender.org (not a blacklist!)
149dnsbl.njabl.org (result 127.0.0.2 = open relay)
146dnsbl.njabl.org (result 127.0.0.4 = spam source)
144iadb2.isipp.com (not a blacklist!)
144iadb.isipp.com (not a blacklist!)
118blackholes.uceb.org (result 127.0.0.3 = spam source)
113multi.uribl.com (result 127.0.0.2 = spam resource)
113multi.uribl.com (union of all results)
112bl.deadbeef.com
105multi.surbl.org
104multihop.dsbl.org
78dnsbl.ahbl.org (result 127.0.0.4 = spam source)
63dnsbl.sorbs.net (result 127.0.0.6 = spam source)
42relays.nether.net
37blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
33spam.wytnij.to
31countries.blackholes.us (result 127.5.6.6 = Nigeria)
31hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
31blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
30rdts.dnsbl.net.au
23dnsbl.ahbl.org (result 127.0.0.15 = open relay)
22dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
18spamguard.leadmon.net (union of all results)
16exemptions.ahbl.org (not a blacklist!)
13blackholes.uceb.org (result 127.0.0.2 = open relay)
11blackholes.uceb.org (result 127.0.0.5 = dialup)
11spamguard.leadmon.net (result 127.0.0.8 = open proxy)
11blackholes.brainerd.net
10dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
5spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
4ohps.dnsbl.net.au
4dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
4dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
3blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
2owps.dnsbl.net.au
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1spamsites.dnsbl.net.au
1osps.dnsbl.net.au
1osrs.dnsbl.net.au
1omrs.dnsbl.net.au
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1dob.sibl.support-intelligence.net
1dnsbl.ahbl.org (result 127.0.0.18 = virus source)
1dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)


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

HitsDNS Zone
217737(total number of IP addresses whose names were tested, including 482 at SDSC)
151337(union of all domain zones)
130966l1.apews.org
102406rddn.dnsbl.net.au
98097abuse.rfc-ignorant.org
64676dynamic.rhs.mailpolice.com
60201whois.rfc-ignorant.org (union of all results)
42517whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
17684whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
10568webmail.rhs.mailpolice.com
674multi.surbl.org
659multi.uribl.com (result 127.0.0.2 = spam resource)
659multi.uribl.com (union of all results)
509adv.rhs.mailpolice.com
157bl.deadbeef.com
93postmaster.rfc-ignorant.org
79rhsbl.ahbl.org
70bogusmx.rfc-ignorant.org
70bulk.rhs.mailpolice.com
65dsn.rfc-ignorant.org (zone not intended for this use)
38dob.sibl.support-intelligence.net
25rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
25rhsbl.sorbs.net (union of all results)
16porn.rhs.mailpolice.com


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

HitsDNS Zone
194551(total number of domains tested, including 409 at SDSC)
54762(union of all domain zones)
36515whois.rfc-ignorant.org (union of all results)
35814whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
8388bogusmx.rfc-ignorant.org
4740abuse.rfc-ignorant.org
2884multi.surbl.org
2345multi.uribl.com (union of all results)
2279multi.uribl.com (result 127.0.0.2 = spam resource)
2011l1.apews.org
1618postmaster.rfc-ignorant.org
1572webmail.rhs.mailpolice.com
933dsn.rfc-ignorant.org
858porn.rhs.mailpolice.com
701whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
404rhsbl.ahbl.org
385bulk.rhs.mailpolice.com
192adv.rhs.mailpolice.com
165rddn.dnsbl.net.au (zone not intended for this use)
141dynamic.rhs.mailpolice.com
84rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
84rhsbl.sorbs.net (union of all results)
52multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
36dob.sibl.support-intelligence.net
14multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
5fraud.rhs.mailpolice.com
2bl.deadbeef.com
1cart00ney.surriel.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 30 November 2007.