Blacklists Compared

27 October 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
257189(total number of IP addresses tested, including 494 at SDSC)
243151(union of most IP zones)
219188l2.apews.org
198471zen.spamhaus.org (union of all results)
185984t1.dnsbl.net.au
152524pbl.spamhaus.org (union of all results)
139934zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
139617sbl-xbl.spamhaus.org (union of all results)
138921sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
138893xbl.spamhaus.org (union of all results)
138678xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
138283cbl.abuseat.org
138196dnsbl.tqmcube.com (union of all results)
131013dnsbl-3.uceprotect.net
127348dnsbl.sorbs.net (union of all results)
119007zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
118720dnsbl-2.uceprotect.net
118344pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
110982psbl.surriel.com
108047no-more-funn.moensted.dk (union of all results)
107147dnsbl-1.uceprotect.net
103073dnsbl.sorbs.net (result 127.0.0.10 = dialup)
95986blackholes.five-ten-sg.com (union of all results)
90064blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
89597dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
84385no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
61483ubl.unsubscore.com
43991dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
42269hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
40175bl.csma.biz
36906bl.spamcop.net
34280zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
34185pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
33853db.wpbl.info
26606dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
21227ix.dnsbl.manitu.net
20224no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
18727ips.backscatterer.org
15579unconfirmed.dsbl.org
15486mail-abuse.blacklist.jippg.org
15451dnsbl.tqmcube.com (result 127.0.0.5 = China)
15347dsbl.dnsbl.net.au
15326list.dsbl.org
15191countries.blackholes.us (result 127.1.5.6 = China)
11770countries.blackholes.us (result 127.0.7.6 = Brazil)
9660countries.blackholes.us (result 127.6.4.3 = Russia)
9037tr.countries.nerd.dk
8671countries.blackholes.us (result 127.7.9.2 = Turkey)
8077korea.services.net
7771dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
7517countries.blackholes.us (result 127.4.1.0 = Korea)
6790bl.spamcannibal.org
5417countries.blackholes.us (result 127.4.8.4 = Mexico)
5217rmst.dnsbl.net.au
4963dnsbl.njabl.org (union of all results)
4952list.dnswl.org (not a blacklist!)
4653dnsbl.njabl.org (result 127.0.0.9 = open proxy)
4651blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4137countries.blackholes.us (result 127.0.3.2 = Argentina)
4124spamsources.fabel.dk
3434dnsbl.ahbl.org (union of all results)
3231countries.blackholes.us (result 127.7.6.4 = Thailand)
3160dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2964countries.blackholes.us (result 127.3.9.2 = Japan)
2703hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
2395no-more-funn.moensted.dk (result 127.0.0.9 = misc)
2271hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2038probes.dnsbl.net.au
1509countries.blackholes.us (result 127.4.5.8 = Malaysia)
1187blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1072countries.blackholes.us (result 127.1.5.8 = Taiwan)
801zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
801sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
800xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
729countries.blackholes.us (result 127.3.4.4 = Hong Kong)
661sbl.spamhaus.org
660zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
659sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
606no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
538no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
405countries.blackholes.us (result 127.7.0.2 = Singapore)
382blackholes.uceb.org (union of all results)
308work.drbl.croco.net
300blackholes.uceb.org (result 127.0.0.6 = spam haven)
296aspews.ext.sorbs.net
263dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
243dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
164accredit.habeas.com (not a blacklist!)
160multi.surbl.org
157blackholes.uceb.org (result 127.0.0.3 = spam source)
156dnsbl.njabl.org (result 127.0.0.4 = spam source)
156iadb2.isipp.com (not a blacklist!)
156iadb.isipp.com (not a blacklist!)
154dnsbl.njabl.org (result 127.0.0.2 = open relay)
149dnsbl.ahbl.org (result 127.0.0.4 = spam source)
147query.bondedsender.org (not a blacklist!)
146bl.deadbeef.com
143multi.uribl.com (result 127.0.0.2 = spam resource)
143multi.uribl.com (union of all results)
139multihop.dsbl.org
72relays.nether.net
72dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
66hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
45blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
45exemptions.ahbl.org (not a blacklist!)
43blackholes.uceb.org (result 127.0.0.5 = dialup)
42spam.wytnij.to
34blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
34dnsbl.ahbl.org (result 127.0.0.15 = open relay)
32dnsbl.sorbs.net (result 127.0.0.6 = spam source)
30spamguard.leadmon.net (union of all results)
29dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
27countries.blackholes.us (result 127.5.6.6 = Nigeria)
26rdts.dnsbl.net.au
22blackholes.uceb.org (result 127.0.0.2 = open relay)
17blackholes.brainerd.net
13spamguard.leadmon.net (result 127.0.0.8 = open proxy)
12spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
10ohps.dnsbl.net.au
10dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
5spamguard.leadmon.net (result 127.0.0.3 = spam source)
4dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
3omrs.dnsbl.net.au
3no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
3blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2spamsites.dnsbl.net.au
2osps.dnsbl.net.au
2osrs.dnsbl.net.au
2blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
2dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
1blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
1owps.dnsbl.net.au
1dob.sibl.support-intelligence.net
1dnsbl.ahbl.org (result 127.0.0.18 = virus source)
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
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
257189(total number of IP addresses whose names were tested, including 494 at SDSC)
169077(union of all domain zones)
147856l1.apews.org
112166rddn.dnsbl.net.au
107948abuse.rfc-ignorant.org
68934dynamic.rhs.mailpolice.com
63648whois.rfc-ignorant.org (union of all results)
44985whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
18664whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
11702webmail.rhs.mailpolice.com
796multi.surbl.org
685multi.uribl.com (union of all results)
682multi.uribl.com (result 127.0.0.2 = spam resource)
539adv.rhs.mailpolice.com
430dob.sibl.support-intelligence.net
150bl.deadbeef.com
140bulk.rhs.mailpolice.com
136postmaster.rfc-ignorant.org
136rhsbl.ahbl.org
104dsn.rfc-ignorant.org (zone not intended for this use)
94bogusmx.rfc-ignorant.org
40porn.rhs.mailpolice.com
36rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
36rhsbl.sorbs.net (union of all results)
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
1ex.dnsbl.org


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

HitsDNS Zone
210101(total number of domains tested, including 437 at SDSC)
50660(union of all domain zones)
32019whois.rfc-ignorant.org (union of all results)
31271whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
6967bogusmx.rfc-ignorant.org
5518abuse.rfc-ignorant.org
2951multi.surbl.org
2303multi.uribl.com (union of all results)
2247multi.uribl.com (result 127.0.0.2 = spam resource)
2242l1.apews.org
1877webmail.rhs.mailpolice.com
1818postmaster.rfc-ignorant.org
1813dob.sibl.support-intelligence.net
1083dsn.rfc-ignorant.org
901porn.rhs.mailpolice.com
748whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
476bulk.rhs.mailpolice.com
459rhsbl.ahbl.org
196adv.rhs.mailpolice.com
160rddn.dnsbl.net.au (zone not intended for this use)
132dynamic.rhs.mailpolice.com
83rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
83rhsbl.sorbs.net (union of all results)
54multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
15ex.dnsbl.org
6fraud.rhs.mailpolice.com
5bl.deadbeef.com
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 4 November 2007.