Blacklists Compared

8 August 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
156483(total number of IP addresses tested, including 183 at SDSC)
153161(union of most IP zones)
143065b.barracudacentral.org
139609zen.spamhaus.org (union of all results)
135022l2.apews.org
110051hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
102905cbl.abuseat.org
102870zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
96467dnsbl-1.uceprotect.net
96357dnsbl-3.uceprotect.net
96200dnsbl.sorbs.net (union of all results)
96060dnsbl-2.uceprotect.net
87165zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
71918dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
63343ubl.unsubscore.com
55737psbl.surriel.com
48863hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
37839no-more-funn.moensted.dk (union of all results)
37709dnsbl.sorbs.net (result 127.0.0.10 = dialup)
37294bl.spameatingmonkey.net
36748blackholes.five-ten-sg.com (union of all results)
34552bl.spamcop.net
32703blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
27225no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
27167db.wpbl.info
25245zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
17427ix.dnsbl.manitu.net
14483spam.dnsbl.sorbs.net
14170hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
14103mail-abuse.blacklist.jippg.org
10074dnsbl.inps.de
8856no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
7787bl.spamcannibal.org
7132korea.services.net
6624tr.countries.nerd.dk
4372spamsources.fabel.dk
3566list.dnswl.org (not a blacklist!)
3336ips.backscatterer.org
3082hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2975blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2393dnsbl.njabl.org (union of all results)
1990dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1704hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1276hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
1125hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1048blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
997no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
953aspews.ext.sorbs.net
682no-more-funn.moensted.dk (result 127.0.0.9 = misc)
483accredit.habeas.com (not a blacklist!)
481l2.bbfh.ext.sorbs.net
423dnsbl.sorbs.net (result 127.0.0.6 = spam source)
374query.bondedsender.org (not a blacklist!)
274dnsbl.njabl.org (result 127.0.0.4 = spam source)
203dnsbl.ahbl.org (union of all results)
171zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
164dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
159iadb2.isipp.com (not a blacklist!)
145l1.bbfh.ext.sorbs.net
134no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
130dnsbl.njabl.org (result 127.0.0.2 = open relay)
125iadb.isipp.com (not a blacklist!)
98tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
98tor.dnsbl.sectoor.de (union of all results)
57bl.deadbeef.com
40dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
38dnsbl.ahbl.org (result 127.0.0.4 = spam source)
35dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
22blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
16multi.uribl.com (union of all results)
15multi.uribl.com (result 127.0.0.2 = spam resource)
9dnsbl-0.uceprotect.net
8zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
7multi.surbl.org
6spamguard.leadmon.net (union of all results)
5dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
4spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
3dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
3blackholes.brainerd.net
3dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)

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
156483(total number of IP addresses whose names were tested, including 183 at SDSC)
96303hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
87680hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
79214(union of most domain zones)
71371l1.apews.org
63545abuse.rfc-ignorant.org
32232dynamic.rhs.mailpolice.com
26461whois.rfc-ignorant.org (union of all results)
16719whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
9742whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
8436hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
4115webmail.rhs.mailpolice.com
3423hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1662urired.spameatingmonkey.net
894rhsbl.ahbl.org
747adv.rhs.mailpolice.com
738hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
275hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
195hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
183hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
106multi.uribl.com (result 127.0.0.2 = spam resource)
106multi.uribl.com (union of all results)
103multi.surbl.org
101rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
101rhsbl.sorbs.net (union of all results)
68postmaster.rfc-ignorant.org
47dsn.rfc-ignorant.org (zone not intended for this use)
41bogusmx.rfc-ignorant.org
31hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
25bulk.rhs.mailpolice.com
15dob.sibl.support-intelligence.net
14bl.deadbeef.com
13fresh.spameatingmonkey.net
4porn.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
80320(total number of domains tested, including 162 at SDSC)
60408hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
15909(union of most domain zones)
14140hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
7685hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
4575whois.rfc-ignorant.org (union of all results)
4313abuse.rfc-ignorant.org
4263urired.spameatingmonkey.net
4221hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
3884whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3145l1.apews.org
2292hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1904hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1454bogusmx.rfc-ignorant.org
1322multi.surbl.org
1214multi.uribl.com (union of all results)
1197multi.uribl.com (result 127.0.0.2 = spam resource)
1136postmaster.rfc-ignorant.org
929webmail.rhs.mailpolice.com
691whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
533dynamic.rhs.mailpolice.com
489hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
366dsn.rfc-ignorant.org
332porn.rhs.mailpolice.com
296hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
291adv.rhs.mailpolice.com
122rhsbl.ahbl.org
66bulk.rhs.mailpolice.com
47hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
34rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
34rhsbl.sorbs.net (union of all results)
22dob.sibl.support-intelligence.net
19fresh.spameatingmonkey.net
14ex.dnsbl.org
11multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
6multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1fraud.rhs.mailpolice.com
1bl.deadbeef.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 12 August 2009.