Blacklists Compared

26 April 2008

[ 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
242983(total number of IP addresses tested, including 469 at SDSC)
214933(union of most IP zones)
186185l2.apews.org
156689zen.spamhaus.org (union of all results)
137291t1.dnsbl.net.au
100745zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
95042dnsbl-2.uceprotect.net
92752cbl.abuseat.org
92680zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
91592dnsbl-3.uceprotect.net
88259dnsbl-1.uceprotect.net
85959psbl.surriel.com
79670hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
77044no-more-funn.moensted.dk (union of all results)
75648dnsbl.sorbs.net (union of all results)
73568blackholes.five-ten-sg.com (union of all results)
67893blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
65737dnsbl.sorbs.net (result 127.0.0.10 = dialup)
51898no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
35511bl.spamcop.net
33172ix.dnsbl.manitu.net
30126db.wpbl.info
28883zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
25563ips.backscatterer.org
22610no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
21252countries.blackholes.us (result 127.1.5.6 = China)
13302unconfirmed.dsbl.org
13140bl.spamcannibal.org
13096list.dsbl.org
13049dsbl.dnsbl.net.au
11997ubl.unsubscore.com
11829tr.countries.nerd.dk
10630hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
10506sbl.csma.biz
10389bl.csma.biz
9523dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
9348countries.blackholes.us (result 127.7.9.2 = Turkey)
8869countries.blackholes.us (result 127.6.4.3 = Russia)
7952countries.blackholes.us (result 127.0.7.6 = Brazil)
7868mail-abuse.blacklist.jippg.org
6386list.dnswl.org (not a blacklist!)
5534korea.services.net
5472rmst.dnsbl.net.au
4977countries.blackholes.us (result 127.3.9.2 = Japan)
4838countries.blackholes.us (result 127.4.1.0 = Korea)
4430blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4363spamsources.fabel.dk
4286dnsbl.njabl.org (union of all results)
3850dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3225hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
3197countries.blackholes.us (result 127.0.3.2 = Argentina)
2758dnsbl.ahbl.org (union of all results)
2482dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2269countries.blackholes.us (result 127.7.6.4 = Thailand)
2023hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
1796countries.blackholes.us (result 127.4.8.4 = Mexico)
1701aspews.ext.sorbs.net
1601no-more-funn.moensted.dk (result 127.0.0.9 = misc)
1160blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
966countries.blackholes.us (result 127.3.4.4 = Hong Kong)
911countries.blackholes.us (result 127.1.5.8 = Taiwan)
827zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
778no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
621countries.blackholes.us (result 127.4.5.8 = Malaysia)
611zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
453countries.blackholes.us (result 127.7.0.2 = Singapore)
410probes.dnsbl.net.au
365dnsbl.sorbs.net (result 127.0.0.6 = spam source)
297work.drbl.croco.net
286dnsbl.njabl.org (result 127.0.0.4 = spam source)
278query.bondedsender.org (not a blacklist!)
245no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
229tor.dnsbl.sectoor.de (union of all results)
227tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
221accredit.habeas.com (not a blacklist!)
208bl.deadbeef.com
201dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
193dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
181relays.nether.net
164multihop.dsbl.org
150dnsbl.njabl.org (result 127.0.0.2 = open relay)
147iadb2.isipp.com (not a blacklist!)
146dnsbl.ahbl.org (result 127.0.0.4 = spam source)
136iadb.isipp.com (not a blacklist!)
105multi.surbl.org
100exemptions.ahbl.org (not a blacklist!)
89dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
83dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
52blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
30blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
27countries.blackholes.us (result 127.5.6.6 = Nigeria)
23ricn.dnsbl.net.au
23spamguard.leadmon.net (union of all results)
22rdts.dnsbl.net.au
21dnsbl.ahbl.org (result 127.0.0.15 = open relay)
20blackholes.brainerd.net
16ohps.dnsbl.net.au
14spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
13dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
11spam.wytnij.to
11multi.uribl.com (result 127.0.0.2 = spam resource)
11multi.uribl.com (union of all results)
9dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
5spamguard.leadmon.net (result 127.0.0.8 = open proxy)
3dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
3spamguard.leadmon.net (result 127.0.0.3 = spam source)
3no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
3dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
2tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
2spamsites.dnsbl.net.au
2osps.dnsbl.net.au
2osrs.dnsbl.net.au
2blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1owps.dnsbl.net.au
1spamguard.leadmon.net (result 127.0.0.5 = open relay)
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 127.0.0.14 = 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
242983(total number of IP addresses whose names were tested, including 469 at SDSC)
128372(union of all domain zones)
103823l1.apews.org
85949abuse.rfc-ignorant.org
71046rddn.dnsbl.net.au
47395whois.rfc-ignorant.org (union of all results)
44411dynamic.rhs.mailpolice.com
31306whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
16090whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
8345webmail.rhs.mailpolice.com
759multi.surbl.org
630adv.rhs.mailpolice.com
583multi.uribl.com (union of all results)
582multi.uribl.com (result 127.0.0.2 = spam resource)
240bulk.rhs.mailpolice.com
197bogusmx.rfc-ignorant.org
163rhsbl.ahbl.org
159postmaster.rfc-ignorant.org
134bl.deadbeef.com
110dsn.rfc-ignorant.org (zone not intended for this use)
65porn.rhs.mailpolice.com
35dob.sibl.support-intelligence.net
31rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
31rhsbl.sorbs.net (union of all results)
2ex.dnsbl.org
1multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
1blackhole.securitysage.com


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

HitsDNS Zone
143085(total number of domains tested, including 421 at SDSC)
34180(union of all domain zones)
18410whois.rfc-ignorant.org (union of all results)
17730whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
7263bogusmx.rfc-ignorant.org
4754abuse.rfc-ignorant.org
1989postmaster.rfc-ignorant.org
1852multi.surbl.org
1687l1.apews.org
1552multi.uribl.com (union of all results)
1491multi.uribl.com (result 127.0.0.2 = spam resource)
1159webmail.rhs.mailpolice.com
1006dsn.rfc-ignorant.org
680whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
521porn.rhs.mailpolice.com
254adv.rhs.mailpolice.com
197rhsbl.ahbl.org
191bulk.rhs.mailpolice.com
163blackhole.securitysage.com
134rddn.dnsbl.net.au (zone not intended for this use)
116dynamic.rhs.mailpolice.com
60rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
60rhsbl.sorbs.net (union of all results)
58multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
58dob.sibl.support-intelligence.net
15ex.dnsbl.org
5bl.deadbeef.com
3multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
3fraud.rhs.mailpolice.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 2 May 2008.