Blacklists Compared

14 November 2009

[ 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
170583(total number of IP addresses tested, including 182 at SDSC)
167027(union of most IP zones)
154048b.barracudacentral.org
151539zen.spamhaus.org (union of all results)
143380l2.apews.org
116790cbl.abuseat.org
116704zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
110585dnsbl-3.uceprotect.net
109629dnsbl-1.uceprotect.net
108983hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
108857dnsbl-2.uceprotect.net
106530dnsbl.sorbs.net (union of all results)
98651zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
98430psbl.surriel.com
81072dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
80507ubl.unsubscore.com
64818bl.spameatingmonkey.net
49453blackholes.five-ten-sg.com (union of all results)
45645blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
44228hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
40680no-more-funn.moensted.dk (union of all results)
38401db.wpbl.info
38043dnsbl.sorbs.net (result 127.0.0.10 = dialup)
33895bl.spamcop.net
31653bl.score.senderscore.com
25521no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
24715zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
20635spam.dnsbl.sorbs.net
18567hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
18243ix.dnsbl.manitu.net
13565mail-abuse.blacklist.jippg.org
11004no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
10832dnsbl.inps.de
10276korea.services.net
9766bl.spamcannibal.org
7878ips.backscatterer.org
4963spamsources.fabel.dk
3838list.dnswl.org (not a blacklist!)
2880hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2815blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2565no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
2266dnsbl.njabl.org (union of all results)
2166hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
2028hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1853dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1420no-more-funn.moensted.dk (result 127.0.0.9 = misc)
1378tr.countries.nerd.dk
1134zen.spamhaus.org (union of SBL and SBLCSS results)
976blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
801zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
574aspews.ext.sorbs.net
512accredit.habeas.com (not a blacklist!)
462l2.bbfh.ext.sorbs.net
459dnsbl.sorbs.net (result 127.0.0.6 = spam source)
404query.bondedsender.org (not a blacklist!)
333zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
240no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
213dnsbl.njabl.org (result 127.0.0.4 = spam source)
200dnsbl.njabl.org (result 127.0.0.2 = open relay)
180l1.bbfh.ext.sorbs.net
167dnsbl.ahbl.org (union of all results)
161iadb2.isipp.com (not a blacklist!)
139dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
130iadb.isipp.com (not a blacklist!)
96hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
95tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
95tor.dnsbl.sectoor.de (union of all results)
53bl.deadbeef.com
32dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
31dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
28dnsbl-0.uceprotect.net
28dnsbl.ahbl.org (result 127.0.0.4 = spam source)
18multi.uribl.com (union of all results)
17multi.uribl.com (result 127.0.0.2 = spam resource)
14blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
10blackholes.brainerd.net
9zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
4hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
3multi.surbl.org
3spamguard.leadmon.net (union of all results)
2dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
2spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
2blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1spamguard.leadmon.net (result 127.0.0.8 = open proxy)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)


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
170583(total number of IP addresses whose names were tested, including 182 at SDSC)
99463hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
87202hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
81646(union of most domain zones)
70614l1.apews.org
66144abuse.rfc-ignorant.org
31279dynamic.rhs.mailpolice.com
27920whois.rfc-ignorant.org (union of all results)
20975whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
10228hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
6946whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
3726webmail.rhs.mailpolice.com
3049hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
846adv.rhs.mailpolice.com
752hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
643hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
571urired.spameatingmonkey.net
344hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
340hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
294bl.deadbeef.com
206hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
149rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
149rhsbl.sorbs.net (union of all results)
72postmaster.rfc-ignorant.org
43bogusmx.rfc-ignorant.org
41bulk.rhs.mailpolice.com
40dsn.rfc-ignorant.org (zone not intended for this use)
39multi.surbl.org
36multi.uribl.com (result 127.0.0.2 = spam resource)
36multi.uribl.com (union of all results)
34rhsbl.ahbl.org
19fresh.spameatingmonkey.net
16dob.sibl.support-intelligence.net
9hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
5porn.rhs.mailpolice.com


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
74060(total number of domains tested, including 164 at SDSC)
68987hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
19002(union of most domain zones)
8577hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
7303whois.rfc-ignorant.org (union of all results)
6826whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
6567hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
4738urired.spameatingmonkey.net
4271abuse.rfc-ignorant.org
3073hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2348l1.apews.org
1710postmaster.rfc-ignorant.org
1614hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1361bogusmx.rfc-ignorant.org
1276multi.surbl.org
1035multi.uribl.com (union of all results)
1023multi.uribl.com (result 127.0.0.2 = spam resource)
1007webmail.rhs.mailpolice.com
807hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
654hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
568dsn.rfc-ignorant.org
477whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
336adv.rhs.mailpolice.com
283dynamic.rhs.mailpolice.com
252porn.rhs.mailpolice.com
100bulk.rhs.mailpolice.com
51hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
42hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
37fresh.spameatingmonkey.net
34rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
34rhsbl.sorbs.net (union of all results)
28hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
28dob.sibl.support-intelligence.net
20ex.dnsbl.org
20rhsbl.ahbl.org
12multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
2fraud.rhs.mailpolice.com
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 19 November 2009.