Blacklists Compared

5 December 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
134509(total number of IP addresses tested, including 188 at SDSC)
130861(union of most IP zones)
121836b.barracudacentral.org
112381l2.apews.org
103384cbl.abuseat.org
90443hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
88513dnsbl-1.uceprotect.net
86239dnsbl.sorbs.net (union of all results)
78066dnsbl-3.uceprotect.net
77758dnsbl-2.uceprotect.net
72554ubl.unsubscore.com
69176dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
68969psbl.surriel.com
51070bl.spameatingmonkey.net
47905blackholes.five-ten-sg.com (union of all results)
43496blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
38191hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
35689zen.spamhaus.org (union of all results)
34225no-more-funn.moensted.dk (union of all results)
32684zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
28520db.wpbl.info
27267dnsbl.sorbs.net (result 127.0.0.10 = dialup)
25835bl.spamcop.net
23903bl.score.senderscore.com
20828zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
18303no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
16573spam.dnsbl.sorbs.net
16311hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
14277ix.dnsbl.manitu.net
10695mail-abuse.blacklist.jippg.org
10319no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
9436dnsbl.inps.de
9125korea.services.net
6646bl.spamcannibal.org
5361zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
4350spamsources.fabel.dk
3893list.dnswl.org (not a blacklist!)
3861no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
3314ips.backscatterer.org
3193blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2945hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2135hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1889dnsbl.njabl.org (union of all results)
1726no-more-funn.moensted.dk (result 127.0.0.9 = misc)
1526dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1468hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1197blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
811tr.countries.nerd.dk
726zen.spamhaus.org (union of SBL and SBLCSS results)
609l2.bbfh.ext.sorbs.net
587aspews.ext.sorbs.net
541zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
540accredit.habeas.com (not a blacklist!)
436query.bondedsender.org (not a blacklist!)
267l1.bbfh.ext.sorbs.net
239dnsbl.sorbs.net (result 127.0.0.6 = spam source)
189dnsbl.njabl.org (result 127.0.0.2 = open relay)
185zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
174dnsbl.njabl.org (result 127.0.0.4 = spam source)
157iadb2.isipp.com (not a blacklist!)
141dnsbl.ahbl.org (union of all results)
120iadb.isipp.com (not a blacklist!)
116hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
115dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
88no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
80tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
80tor.dnsbl.sectoor.de (union of all results)
38bl.deadbeef.com
36dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
29dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
26dnsbl.ahbl.org (result 127.0.0.4 = spam source)
17blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
11dnsbl-0.uceprotect.net
8multi.uribl.com (result 127.0.0.2 = spam resource)
8multi.uribl.com (union of all results)
6blackholes.brainerd.net
5zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
4dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
3multi.surbl.org
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
1hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1spamguard.leadmon.net (union of all results)


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
134509(total number of IP addresses whose names were tested, including 188 at SDSC)
75320hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
64745hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
61629(union of most domain zones)
52639l1.apews.org
50085abuse.rfc-ignorant.org
23046dynamic.rhs.mailpolice.com
21765whois.rfc-ignorant.org (union of all results)
16695whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
8824hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
5070whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
3233webmail.rhs.mailpolice.com
3218hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
923adv.rhs.mailpolice.com
594hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
589urired.spameatingmonkey.net
574hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
401hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
366bl.deadbeef.com
227hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
136hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
125rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
125rhsbl.sorbs.net (union of all results)
50postmaster.rfc-ignorant.org
38multi.surbl.org
36rhsbl.ahbl.org
33bulk.rhs.mailpolice.com
32multi.uribl.com (result 127.0.0.2 = spam resource)
32dsn.rfc-ignorant.org (zone not intended for this use)
32multi.uribl.com (union of all results)
29bogusmx.rfc-ignorant.org
24fresh.spameatingmonkey.net
23dob.sibl.support-intelligence.net
7porn.rhs.mailpolice.com
2hostkarma.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
61586(total number of domains tested, including 181 at SDSC)
58842hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
15030(union of most domain zones)
6206hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
5616whois.rfc-ignorant.org (union of all results)
5297whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4852hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
4002urired.spameatingmonkey.net
2938abuse.rfc-ignorant.org
2601hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1666hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1532l1.apews.org
1371multi.surbl.org
1368postmaster.rfc-ignorant.org
1012bogusmx.rfc-ignorant.org
998multi.uribl.com (union of all results)
981multi.uribl.com (result 127.0.0.2 = spam resource)
798webmail.rhs.mailpolice.com
508dsn.rfc-ignorant.org
462hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
337adv.rhs.mailpolice.com
319whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
217porn.rhs.mailpolice.com
153dynamic.rhs.mailpolice.com
146hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
83bulk.rhs.mailpolice.com
70hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
23rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
23rhsbl.sorbs.net (union of all results)
22hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
20fresh.spameatingmonkey.net
17hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
15multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
15dob.sibl.support-intelligence.net
15ex.dnsbl.org
15rhsbl.ahbl.org
2multi.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)
2bl.deadbeef.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 9 December 2009.