Blacklists Compared

29 March 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
244484(total number of IP addresses tested, including 472 at SDSC)
227534(union of most IP zones)
202337l2.apews.org
186660zen.spamhaus.org (union of all results)
168746t1.dnsbl.net.au
120269cbl.abuseat.org
120206zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
115551zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
110689dnsbl-3.uceprotect.net
105178dnsbl-2.uceprotect.net
102673psbl.surriel.com
94850dnsbl.sorbs.net (union of all results)
93225dnsbl-1.uceprotect.net
83870no-more-funn.moensted.dk (union of all results)
81402dnsbl.sorbs.net (result 127.0.0.10 = dialup)
77855hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
77299blackholes.five-ten-sg.com (union of all results)
71523blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
66007no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
42004bl.spamcop.net
36550ubl.unsubscore.com
36274zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
34484ix.dnsbl.manitu.net
31459db.wpbl.info
16777no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
15840unconfirmed.dsbl.org
15700dsbl.dnsbl.net.au
15693list.dsbl.org
14563dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
14463ips.backscatterer.org
14163bl.spamcannibal.org
13849tr.countries.nerd.dk
11359countries.blackholes.us (result 127.1.5.6 = China)
11241mail-abuse.blacklist.jippg.org
11144countries.blackholes.us (result 127.7.9.2 = Turkey)
9888countries.blackholes.us (result 127.0.7.6 = Brazil)
9236countries.blackholes.us (result 127.6.4.3 = Russia)
8121korea.services.net
7362rmst.dnsbl.net.au
7185countries.blackholes.us (result 127.4.1.0 = Korea)
5037list.dnswl.org (not a blacklist!)
4705dnsbl.njabl.org (union of all results)
4604blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4319dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3764countries.blackholes.us (result 127.0.3.2 = Argentina)
3740countries.blackholes.us (result 127.3.9.2 = Japan)
3587spamsources.fabel.dk
2800dnsbl.ahbl.org (union of all results)
2577dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2551countries.blackholes.us (result 127.7.6.4 = Thailand)
2402countries.blackholes.us (result 127.4.8.4 = Mexico)
2310hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1673aspews.ext.sorbs.net
1640bl.csma.biz
1556sbl.csma.biz
1092blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1017countries.blackholes.us (result 127.1.5.8 = Taiwan)
945zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
841countries.blackholes.us (result 127.4.5.8 = Malaysia)
753countries.blackholes.us (result 127.3.4.4 = Hong Kong)
626zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
602no-more-funn.moensted.dk (result 127.0.0.9 = misc)
586hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
578dnsbl.sorbs.net (result 127.0.0.6 = spam source)
529probes.dnsbl.net.au
465countries.blackholes.us (result 127.7.0.2 = Singapore)
441no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
291dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
279dnsbl.njabl.org (result 127.0.0.4 = spam source)
275query.bondedsender.org (not a blacklist!)
270tor.dnsbl.sectoor.de (union of all results)
268tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
268work.drbl.croco.net
265dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
241bl.deadbeef.com
205accredit.habeas.com (not a blacklist!)
152iadb2.isipp.com (not a blacklist!)
137iadb.isipp.com (not a blacklist!)
132dnsbl.ahbl.org (result 127.0.0.4 = spam source)
125multi.surbl.org
114multihop.dsbl.org
106dnsbl.njabl.org (result 127.0.0.2 = open relay)
105relays.nether.net
100no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
81hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
79exemptions.ahbl.org (not a blacklist!)
77dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
50blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
36dnsbl.ahbl.org (result 127.0.0.15 = open relay)
30blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
28dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
27countries.blackholes.us (result 127.5.6.6 = Nigeria)
23spamguard.leadmon.net (union of all results)
22multi.uribl.com (union of all results)
21multi.uribl.com (result 127.0.0.2 = spam resource)
20rdts.dnsbl.net.au
19dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
14spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
11spam.wytnij.to
11blackholes.brainerd.net
9ohps.dnsbl.net.au
7spamguard.leadmon.net (result 127.0.0.8 = open proxy)
4no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
3dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
2ricn.dnsbl.net.au
2osrs.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)
2dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
2dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
2dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1spamsites.dnsbl.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1dob.sibl.support-intelligence.net
1dnsbl.ahbl.org (result 127.0.0.18 = virus source)


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

HitsDNS Zone
244484(total number of IP addresses whose names were tested, including 472 at SDSC)
143646(union of all domain zones)
118703l1.apews.org
94746abuse.rfc-ignorant.org
84173rddn.dnsbl.net.au
53337whois.rfc-ignorant.org (union of all results)
53092dynamic.rhs.mailpolice.com
34421whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
18917whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
9137webmail.rhs.mailpolice.com
757multi.surbl.org
705dob.sibl.support-intelligence.net
651multi.uribl.com (union of all results)
650multi.uribl.com (result 127.0.0.2 = spam resource)
591adv.rhs.mailpolice.com
146bl.deadbeef.com
120postmaster.rfc-ignorant.org
116rhsbl.ahbl.org
100bogusmx.rfc-ignorant.org
85dsn.rfc-ignorant.org (zone not intended for this use)
65bulk.rhs.mailpolice.com
31porn.rhs.mailpolice.com
26rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
26rhsbl.sorbs.net (union of all results)
1multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
1blackhole.securitysage.com
1ex.dnsbl.org


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

HitsDNS Zone
153911(total number of domains tested, including 441 at SDSC)
38654(union of all domain zones)
22409whois.rfc-ignorant.org (union of all results)
21701whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
7515bogusmx.rfc-ignorant.org
5200abuse.rfc-ignorant.org
2030multi.surbl.org
1979postmaster.rfc-ignorant.org
1908multi.uribl.com (union of all results)
1895l1.apews.org
1849multi.uribl.com (result 127.0.0.2 = spam resource)
1230webmail.rhs.mailpolice.com
1122dsn.rfc-ignorant.org
708whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
472porn.rhs.mailpolice.com
244adv.rhs.mailpolice.com
195bulk.rhs.mailpolice.com
171blackhole.securitysage.com
170rhsbl.ahbl.org
137rddn.dnsbl.net.au (zone not intended for this use)
119dynamic.rhs.mailpolice.com
79rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
79rhsbl.sorbs.net (union of all results)
55multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
37dob.sibl.support-intelligence.net
14ex.dnsbl.org
5bl.deadbeef.com
4multi.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 4 April 2008.