Blacklists Compared

15 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
155172(total number of IP addresses tested, including 207 at SDSC)
151595(union of most IP zones)
141189b.barracudacentral.org
137189zen.spamhaus.org (union of all results)
132880l2.apews.org
96950hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
96862zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
96672cbl.abuseat.org
94009dnsbl-3.uceprotect.net
93861dnsbl.sorbs.net (union of all results)
93120dnsbl-2.uceprotect.net
92671dnsbl-1.uceprotect.net
87388zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
71510ubl.unsubscore.com
70212dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
62106psbl.surriel.com
46542hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
40744bl.spameatingmonkey.net
37682no-more-funn.moensted.dk (union of all results)
36050dnsbl.sorbs.net (result 127.0.0.10 = dialup)
32607bl.spamcop.net
31795blackholes.five-ten-sg.com (union of all results)
29921db.wpbl.info
28159blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
25824no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
24554zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
17215ix.dnsbl.manitu.net
15851spam.dnsbl.sorbs.net
13051mail-abuse.blacklist.jippg.org
11637hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
9973dnsbl.inps.de
9899no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
8669korea.services.net
7583bl.spamcannibal.org
5982tr.countries.nerd.dk
4641spamsources.fabel.dk
3999ips.backscatterer.org
3735list.dnswl.org (not a blacklist!)
3147hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2720blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2411dnsbl.njabl.org (union of all results)
1942dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1838hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1520hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1093no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1043aspews.ext.sorbs.net
895blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
781no-more-funn.moensted.dk (result 127.0.0.9 = misc)
462accredit.habeas.com (not a blacklist!)
388dnsbl.sorbs.net (result 127.0.0.6 = spam source)
381dnsbl.njabl.org (result 127.0.0.4 = spam source)
377query.bondedsender.org (not a blacklist!)
377l2.bbfh.ext.sorbs.net
298zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
269hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
207l1.bbfh.ext.sorbs.net
178dnsbl.ahbl.org (union of all results)
164iadb2.isipp.com (not a blacklist!)
142no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
139dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
125iadb.isipp.com (not a blacklist!)
103tor.dnsbl.sectoor.de (union of all results)
102tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
89dnsbl.njabl.org (result 127.0.0.2 = open relay)
60bl.deadbeef.com
44dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
39dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
39dnsbl.ahbl.org (result 127.0.0.4 = spam source)
21blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
15multi.uribl.com (result 127.0.0.2 = spam resource)
15multi.uribl.com (union of all results)
12zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
10dnsbl-0.uceprotect.net
7blackholes.brainerd.net
6multi.surbl.org
4dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
4dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
4spamguard.leadmon.net (union of all results)
3spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
3hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
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
155172(total number of IP addresses whose names were tested, including 207 at SDSC)
91861hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
83180hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
75328(union of most domain zones)
66855l1.apews.org
59896abuse.rfc-ignorant.org
30572dynamic.rhs.mailpolice.com
25764whois.rfc-ignorant.org (union of all results)
16601whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
9163whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
8667hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
3950webmail.rhs.mailpolice.com
3332hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1798urired.spameatingmonkey.net
868rhsbl.ahbl.org
847hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
787hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
736adv.rhs.mailpolice.com
294hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
276hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
195hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
95multi.uribl.com (result 127.0.0.2 = spam resource)
95multi.uribl.com (union of all results)
90rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
90rhsbl.sorbs.net (union of all results)
86multi.surbl.org
59postmaster.rfc-ignorant.org
38bulk.rhs.mailpolice.com
37dsn.rfc-ignorant.org (zone not intended for this use)
32bogusmx.rfc-ignorant.org
27hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
19bl.deadbeef.com
12fresh.spameatingmonkey.net
10dob.sibl.support-intelligence.net
2porn.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
85325(total number of domains tested, including 187 at SDSC)
74441hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
20869(union of most domain zones)
8995urired.spameatingmonkey.net
7908hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
5682hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
4693whois.rfc-ignorant.org (union of all results)
4468abuse.rfc-ignorant.org
4422hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
4008whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3102l1.apews.org
2440hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1904hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1424bogusmx.rfc-ignorant.org
1301multi.surbl.org
1252multi.uribl.com (union of all results)
1234multi.uribl.com (result 127.0.0.2 = spam resource)
1179postmaster.rfc-ignorant.org
888webmail.rhs.mailpolice.com
685whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
501dynamic.rhs.mailpolice.com
501hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
387dsn.rfc-ignorant.org
372porn.rhs.mailpolice.com
277adv.rhs.mailpolice.com
153hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
132rhsbl.ahbl.org
77bulk.rhs.mailpolice.com
61fresh.spameatingmonkey.net
50hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
37hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
36rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
36rhsbl.sorbs.net (union of all results)
24dob.sibl.support-intelligence.net
15ex.dnsbl.org
13multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
5multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
2fraud.rhs.mailpolice.com
2hostkarma.junkemailfilter.com (result 127.0.1.3 = MTA somtimes sends QUIT)
1bl.deadbeef.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 20 August 2009.