Blacklists Compared

30 January 2010

[ 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 (all results but 127.0.0.2, 127.0.0.3, and 127.0.0.4), 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
228545(total number of IP addresses tested, including 183 at SDSC)
224624(union of most IP zones)
209397zen.spamhaus.org (union of all results)
191579l2.apews.org
170327cbl.abuseat.org
170235zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
166142b.barracudacentral.org
156647dnsbl-1.uceprotect.net
150133hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
148817dnsbl-2.uceprotect.net
143774dnsbl-3.uceprotect.net
141030psbl.surriel.com
137720dnsbl.sorbs.net (union of all results)
127639zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
102920ubl.unsubscore.com
102523dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
88902hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
63273blackholes.five-ten-sg.com (union of all results)
60302bl.spameatingmonkey.net
58165blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
51220dnsbl.sorbs.net (result 127.0.0.10 = dialup)
46693no-more-funn.moensted.dk (union of all results)
46121bl.spamcop.net
36632zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
36467db.wpbl.info
36104bl.score.senderscore.com
32616ix.dnsbl.manitu.net
31415no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
22575mail-abuse.blacklist.jippg.org
17137spam.dnsbl.sorbs.net
15304hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
13047korea.services.net
12213no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
11381dnsbl.inps.de
7888bl.spamcannibal.org
5419spamsources.fabel.dk
4971list.dnswl.org (not a blacklist!)
3965blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
3162ips.backscatterer.org
3038hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2866tr.countries.nerd.dk
2499no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
2423dnsbl.njabl.org (union of all results)
2152dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2106hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1493hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1125blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
559l2.bbfh.ext.sorbs.net
542no-more-funn.moensted.dk (result 127.0.0.9 = misc)
518zen.spamhaus.org (union of SBL and SBLCSS results)
515aspews.ext.sorbs.net
473accredit.habeas.com (not a blacklist!)
417zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
392query.bondedsender.org (not a blacklist!)
274dnsbl.sorbs.net (result 127.0.0.6 = spam source)
272l1.bbfh.ext.sorbs.net
192dnsbl.ahbl.org (union of all results)
166tor.dnsbl.sectoor.de (union of all results)
165tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
156dnsbl.njabl.org (result 127.0.0.2 = open relay)
142iadb2.isipp.com (not a blacklist!)
131hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
119no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
115dnsbl.njabl.org (result 127.0.0.4 = spam source)
109dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
105iadb.isipp.com (not a blacklist!)
101zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
82dnsbl.ahbl.org (result 127.0.0.4 = spam source)
46dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
37dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
34bl.deadbeef.com
18blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
10dnsbl-0.uceprotect.net
9zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
9spamguard.leadmon.net (union of all results)
7multi.uribl.com (result 127.0.0.2 = spam resource)
7multi.uribl.com (union of all results)
6spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
4multi.surbl.org
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
2blackholes.brainerd.net
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1spamguard.leadmon.net (result 127.0.0.8 = open proxy)
1spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)

Survey results for all known public domain-name-based DNS blacklists. Lookups were done on the domain names of connecting IP addresses. The "union of most domain zones" line includes data from the hostkarma.junkemailfilter.com zone only when the results are 127.0.0.2, 127.0.0.3, or 127.0.0.4 because other results are not blacklists.

HitsDNS Zone
228545(total number of IP addresses whose names were tested, including 183 at SDSC)
135476hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
119368hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
111067(union of most domain zones)
95696l1.apews.org
90459abuse.rfc-ignorant.org
39583dynamic.rhs.mailpolice.com
39113whois.rfc-ignorant.org (union of all results)
30335whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
13332hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
8779whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
4725webmail.rhs.mailpolice.com
3227hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1984hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
931adv.rhs.mailpolice.com
523hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
493urired.spameatingmonkey.net
290hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
282hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
129rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
129rhsbl.sorbs.net (union of all results)
94hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
73postmaster.rfc-ignorant.org
62multi.surbl.org
51rhsbl.ahbl.org
48dsn.rfc-ignorant.org (zone not intended for this use)
46bogusmx.rfc-ignorant.org
42bulk.rhs.mailpolice.com
39multi.uribl.com (result 127.0.0.2 = spam resource)
39multi.uribl.com (union of all results)
26fresh.spameatingmonkey.net
26dob.sibl.support-intelligence.net
6porn.rhs.mailpolice.com
6bl.deadbeef.com
3hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)

Survey results for all known public domain-name-based DNS blacklists. Lookups were done on SMTP sender domains. The "union of most domain zones" line includes data from the hostkarma.junkemailfilter.com zone only when the results are 127.0.0.2, 127.0.0.3, or 127.0.0.4 because other results are not blacklists.

HitsDNS Zone
89410(total number of domains tested, including 179 at SDSC)
83672hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
13560(union of most domain zones)
7206hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
5029whois.rfc-ignorant.org (union of all results)
4759whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4019hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
3134urired.spameatingmonkey.net
3126abuse.rfc-ignorant.org
2314hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1882postmaster.rfc-ignorant.org
1434bogusmx.rfc-ignorant.org
1153l1.apews.org
1009hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
820multi.uribl.com (union of all results)
819multi.surbl.org
804multi.uribl.com (result 127.0.0.2 = spam resource)
662webmail.rhs.mailpolice.com
443hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
398dsn.rfc-ignorant.org
314hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
296adv.rhs.mailpolice.com
270whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
227porn.rhs.mailpolice.com
65bulk.rhs.mailpolice.com
26hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
23rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
23rhsbl.sorbs.net (union of all results)
22hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
21hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
19rhsbl.ahbl.org
14multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
13ex.dnsbl.org
8dob.sibl.support-intelligence.net
5fresh.spameatingmonkey.net
5dynamic.rhs.mailpolice.com
3fraud.rhs.mailpolice.com
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
2bl.deadbeef.com
1hostkarma.junkemailfilter.com (result 127.0.1.3 = MTA somtimes sends QUIT)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 5 February 2010.