Blacklists Compared

10 November 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
207149(total number of IP addresses tested, including 498 at SDSC)
198264(union of most IP zones)
178678l2.apews.org
174624zen.spamhaus.org (union of all results)
167401t1.dnsbl.net.au
139716sbl-xbl.spamhaus.org (union of all results)
139342xbl.spamhaus.org (union of all results)
139201xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
139127sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
139103cbl.abuseat.org
139064zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
137034pbl.spamhaus.org (union of all results)
115409dnsbl.sorbs.net (union of all results)
112103dnsbl-3.uceprotect.net
105913dnsbl.tqmcube.com (union of all results)
104842pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
104745zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
101729dnsbl-2.uceprotect.net
95632dnsbl-1.uceprotect.net
94536psbl.surriel.com
89961no-more-funn.moensted.dk (union of all results)
88670dnsbl.sorbs.net (result 127.0.0.10 = dialup)
80645blackholes.five-ten-sg.com (union of all results)
80437ubl.unsubscore.com
78112dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
75697no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
74472blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
41716hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
39453bl.spamcop.net
32229zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
32195pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
29949dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
28163dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
27771db.wpbl.info
26254ix.dnsbl.manitu.net
14075bl.csma.biz
13736unconfirmed.dsbl.org
13668mail-abuse.blacklist.jippg.org
13643list.dsbl.org
13630dsbl.dnsbl.net.au
12048countries.blackholes.us (result 127.0.7.6 = Brazil)
10549no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
9656tr.countries.nerd.dk
9316countries.blackholes.us (result 127.7.9.2 = Turkey)
8544ips.backscatterer.org
7440countries.blackholes.us (result 127.6.4.3 = Russia)
6960dnsbl.tqmcube.com (result 127.0.0.5 = China)
6893countries.blackholes.us (result 127.1.5.6 = China)
5954bl.spamcannibal.org
5118rmst.dnsbl.net.au
4954blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4852korea.services.net
4666dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
4539countries.blackholes.us (result 127.4.8.4 = Mexico)
4467list.dnswl.org (not a blacklist!)
4458countries.blackholes.us (result 127.4.1.0 = Korea)
4079dnsbl.njabl.org (union of all results)
3851dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3630countries.blackholes.us (result 127.0.3.2 = Argentina)
2869dnsbl.ahbl.org (union of all results)
2799hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
2745countries.blackholes.us (result 127.7.6.4 = Thailand)
2703no-more-funn.moensted.dk (result 127.0.0.9 = misc)
2617dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2472spamsources.fabel.dk
2067hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1909countries.blackholes.us (result 127.3.9.2 = Japan)
1843probes.dnsbl.net.au
1385countries.blackholes.us (result 127.4.5.8 = Malaysia)
1149blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
865countries.blackholes.us (result 127.1.5.8 = Taiwan)
772no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
681xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
681sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
678zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
606zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
605sbl.spamhaus.org
603sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
486countries.blackholes.us (result 127.3.4.4 = Hong Kong)
352blackholes.uceb.org (union of all results)
334no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
312blackholes.uceb.org (result 127.0.0.6 = spam haven)
308countries.blackholes.us (result 127.7.0.2 = Singapore)
277aspews.ext.sorbs.net
237work.drbl.croco.net
233dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
216dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
206dnsbl.ahbl.org (result 127.0.0.4 = spam source)
169accredit.habeas.com (not a blacklist!)
163multi.surbl.org
163query.bondedsender.org (not a blacklist!)
160iadb2.isipp.com (not a blacklist!)
160iadb.isipp.com (not a blacklist!)
146blackholes.uceb.org (result 127.0.0.3 = spam source)
143multi.uribl.com (result 127.0.0.2 = spam resource)
143multi.uribl.com (union of all results)
136dnsbl.njabl.org (result 127.0.0.4 = spam source)
120bl.deadbeef.com
96multihop.dsbl.org
92dnsbl.njabl.org (result 127.0.0.2 = open relay)
46countries.blackholes.us (result 127.5.6.6 = Nigeria)
43dnsbl.sorbs.net (result 127.0.0.6 = spam source)
40spam.wytnij.to
40blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
38hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
32dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
32rdts.dnsbl.net.au
30spamguard.leadmon.net (union of all results)
29relays.nether.net
29blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
20dnsbl.ahbl.org (result 127.0.0.15 = open relay)
18spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
18dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
16exemptions.ahbl.org (not a blacklist!)
15blackholes.uceb.org (result 127.0.0.2 = open relay)
11blackholes.uceb.org (result 127.0.0.5 = dialup)
9blackholes.brainerd.net
8spamguard.leadmon.net (result 127.0.0.8 = open proxy)
7no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
6ohps.dnsbl.net.au
4osps.dnsbl.net.au
4spamguard.leadmon.net (result 127.0.0.3 = spam source)
2dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
2dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1spamsites.dnsbl.net.au
1osrs.dnsbl.net.au
1omrs.dnsbl.net.au
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1dob.sibl.support-intelligence.net
1dnsbl.ahbl.org (result 127.0.0.18 = virus source)
1dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
1dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
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
207149(total number of IP addresses whose names were tested, including 498 at SDSC)
144685(union of all domain zones)
128621l1.apews.org
97431rddn.dnsbl.net.au
94985abuse.rfc-ignorant.org
59996dynamic.rhs.mailpolice.com
53954whois.rfc-ignorant.org (union of all results)
36826whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
17128whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
10365webmail.rhs.mailpolice.com
852multi.uribl.com (union of all results)
850multi.uribl.com (result 127.0.0.2 = spam resource)
774multi.surbl.org
525adv.rhs.mailpolice.com
184bl.deadbeef.com
103bulk.rhs.mailpolice.com
103rhsbl.ahbl.org
102postmaster.rfc-ignorant.org
85bogusmx.rfc-ignorant.org
82dsn.rfc-ignorant.org (zone not intended for this use)
35rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
35rhsbl.sorbs.net (union of all results)
18porn.rhs.mailpolice.com
16dob.sibl.support-intelligence.net
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1multi.uribl.com (result 127.0.0.4 = opt-out spam resource)


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

HitsDNS Zone
194812(total number of domains tested, including 429 at SDSC)
53531(union of all domain zones)
36112whois.rfc-ignorant.org (union of all results)
35500whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
7206bogusmx.rfc-ignorant.org
4792abuse.rfc-ignorant.org
2986multi.surbl.org
2542multi.uribl.com (union of all results)
2478multi.uribl.com (result 127.0.0.2 = spam resource)
1996l1.apews.org
1605postmaster.rfc-ignorant.org
1604webmail.rhs.mailpolice.com
915dsn.rfc-ignorant.org
860porn.rhs.mailpolice.com
612whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
419rhsbl.ahbl.org
382bulk.rhs.mailpolice.com
202adv.rhs.mailpolice.com
176rddn.dnsbl.net.au (zone not intended for this use)
145dynamic.rhs.mailpolice.com
76rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
76rhsbl.sorbs.net (union of all results)
52multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
16dob.sibl.support-intelligence.net
12multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
6fraud.rhs.mailpolice.com
3bl.deadbeef.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 16 November 2007.