Blacklists Compared

20 October 2007

[ 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 (127.0.0.1 result), 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
262236(total number of IP addresses tested, including 504 at SDSC)
243069(union of most IP zones)
217656l2.apews.org
187688zen.spamhaus.org (union of all results)
173787t1.dnsbl.net.au
147039pbl.spamhaus.org (union of all results)
136123dnsbl.tqmcube.com (union of all results)
124706dnsbl.sorbs.net (union of all results)
123771sbl-xbl.spamhaus.org (union of all results)
123253xbl.spamhaus.org (union of all results)
123009sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
123006xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
122989cbl.abuseat.org
122838zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
121355psbl.surriel.com
116543dnsbl-3.uceprotect.net
115257pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
115162zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
112605dnsbl-2.uceprotect.net
104911dnsbl-1.uceprotect.net
101761no-more-funn.moensted.dk (union of all results)
99303dnsbl.sorbs.net (result 127.0.0.10 = dialup)
92862blackholes.five-ten-sg.com (union of all results)
87230blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
86320dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
78954no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
69245ubl.unsubscore.com
61132bl.csma.biz
50764hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
48732dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
41291bl.spamcop.net
35313db.wpbl.info
31783pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
31697zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
28295dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
26659ix.dnsbl.manitu.net
25218ips.backscatterer.org
19259no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
17015mail-abuse.blacklist.jippg.org
15386unconfirmed.dsbl.org
15157list.dsbl.org
15072dsbl.dnsbl.net.au
13826dnsbl.tqmcube.com (result 127.0.0.5 = China)
13603countries.blackholes.us (result 127.1.5.6 = China)
10882countries.blackholes.us (result 127.0.7.6 = Brazil)
9721countries.blackholes.us (result 127.6.4.3 = Russia)
8399korea.services.net
8100dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
7753countries.blackholes.us (result 127.4.1.0 = Korea)
7642tr.countries.nerd.dk
7343countries.blackholes.us (result 127.7.9.2 = Turkey)
6893bl.spamcannibal.org
6622countries.blackholes.us (result 127.4.8.4 = Mexico)
5917rmst.dnsbl.net.au
5567list.dnswl.org (not a blacklist!)
4941dnsbl.njabl.org (union of all results)
4581dnsbl.njabl.org (result 127.0.0.9 = open proxy)
4548spamsources.fabel.dk
4387blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
3965countries.blackholes.us (result 127.0.3.2 = Argentina)
3865countries.blackholes.us (result 127.3.9.2 = Japan)
3295dnsbl.ahbl.org (union of all results)
3254countries.blackholes.us (result 127.7.6.4 = Thailand)
3077dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2493hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2486no-more-funn.moensted.dk (result 127.0.0.9 = misc)
2270hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
1937probes.dnsbl.net.au
1270countries.blackholes.us (result 127.1.5.8 = Taiwan)
1251countries.blackholes.us (result 127.4.5.8 = Malaysia)
1153blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
962countries.blackholes.us (result 127.3.4.4 = Hong Kong)
801xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
801sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
800zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
685no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
667zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
667sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
667sbl.spamhaus.org
509no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
485countries.blackholes.us (result 127.7.0.2 = Singapore)
396blackholes.uceb.org (union of all results)
366work.drbl.croco.net
317blackholes.uceb.org (result 127.0.0.6 = spam haven)
309aspews.ext.sorbs.net
267dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
223dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
208dnsbl.njabl.org (result 127.0.0.2 = open relay)
177multihop.dsbl.org
166accredit.habeas.com (not a blacklist!)
162iadb2.isipp.com (not a blacklist!)
162iadb.isipp.com (not a blacklist!)
152dnsbl.njabl.org (result 127.0.0.4 = spam source)
148query.bondedsender.org (not a blacklist!)
144bl.deadbeef.com
137blackholes.uceb.org (result 127.0.0.3 = spam source)
130multi.surbl.org
118multi.uribl.com (result 127.0.0.2 = spam resource)
118multi.uribl.com (union of all results)
114dnsbl.ahbl.org (result 127.0.0.4 = spam source)
105relays.nether.net
71hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
50dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
47spam.wytnij.to
47blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
45blackholes.uceb.org (result 127.0.0.2 = open relay)
41spamguard.leadmon.net (union of all results)
39blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
34dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
34dnsbl.ahbl.org (result 127.0.0.15 = open relay)
31rdts.dnsbl.net.au
27dnsbl.sorbs.net (result 127.0.0.6 = spam source)
24countries.blackholes.us (result 127.5.6.6 = Nigeria)
24exemptions.ahbl.org (not a blacklist!)
22blackholes.uceb.org (result 127.0.0.5 = dialup)
20spamguard.leadmon.net (result 127.0.0.8 = open proxy)
17blackholes.brainerd.net
14spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
12dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
11ohps.dnsbl.net.au
7spamguard.leadmon.net (result 127.0.0.3 = spam source)
4osrs.dnsbl.net.au
4no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
3dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
3spamsites.dnsbl.net.au
3blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
3blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
2omrs.dnsbl.net.au
2dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
2dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
2dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
1blackholes.uceb.org (result 127.0.0.9 = uncooperative company)
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1owps.dnsbl.net.au
1osps.dnsbl.net.au
1dob.sibl.support-intelligence.net
1dnsbl.ahbl.org (result 127.0.0.18 = virus source)
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
1tor.dnsbl.sectoor.de (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.

HitsDNS Zone
262236(total number of IP addresses whose names were tested, including 504 at SDSC)
166369(union of all domain zones)
146159l1.apews.org
109512abuse.rfc-ignorant.org
107200rddn.dnsbl.net.au
65841dynamic.rhs.mailpolice.com
62794whois.rfc-ignorant.org (union of all results)
43637whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
19160whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
11630webmail.rhs.mailpolice.com
766multi.surbl.org
726multi.uribl.com (union of all results)
723multi.uribl.com (result 127.0.0.2 = spam resource)
561adv.rhs.mailpolice.com
165postmaster.rfc-ignorant.org
137bulk.rhs.mailpolice.com
135rhsbl.ahbl.org
109dsn.rfc-ignorant.org (zone not intended for this use)
108bl.deadbeef.com
94bogusmx.rfc-ignorant.org
52porn.rhs.mailpolice.com
38rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
38rhsbl.sorbs.net (union of all results)
18dob.sibl.support-intelligence.net
2multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1ex.dnsbl.org


Survey results for all known public domain-name-based DNS blacklists. Lookups were done on SMTP sender domains.

HitsDNS Zone
185752(total number of domains tested, including 448 at SDSC)
40150(union of all domain zones)
24325whois.rfc-ignorant.org (union of all results)
23608whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
5226abuse.rfc-ignorant.org
5012bogusmx.rfc-ignorant.org
2737multi.surbl.org
2219l1.apews.org
2182multi.uribl.com (union of all results)
2119multi.uribl.com (result 127.0.0.2 = spam resource)
1856postmaster.rfc-ignorant.org
1802webmail.rhs.mailpolice.com
1032dsn.rfc-ignorant.org
770porn.rhs.mailpolice.com
717whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
454rhsbl.ahbl.org
417bulk.rhs.mailpolice.com
199adv.rhs.mailpolice.com
126rddn.dnsbl.net.au (zone not intended for this use)
97dynamic.rhs.mailpolice.com
85rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
85rhsbl.sorbs.net (union of all results)
56multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
21dob.sibl.support-intelligence.net
14ex.dnsbl.org
9fraud.rhs.mailpolice.com
7multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
5bl.deadbeef.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 27 October 2007.