Blacklists Compared

18 September 2004

[ 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 exemptions.ahbl.org and query.bondedsender.org zones because they are not blacklists, and because it is too aggressive to be widely useful the block.blars.org zone is also excluded.

HitsDNS Zone
30308(total number of IP addresses tested, including 423 at SDSC)
25212(union of most IP zones)
19401t1.dnsbl.net.au
17880blackholes.five-ten-sg.com (union of all results)
17111blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
13553sbl-xbl.spamhaus.org (union of all results)
12198xbl.spamhaus.org (union of all results)
12163cbl.abuseat.org
12158xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
12158sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11746dnsbl.sorbs.net (union of all results)
9563no-more-funn.moensted.dk (union of all results)
9466cn-kr.blackholes.us (union of all results)
8681block.blars.org
8637unconfirmed.dsbl.org
8535list.dsbl.org
8533dsbl.dnsbl.net.au
7816dynablock.njabl.org
7493dnsbl.sorbs.net (result 127.0.0.10 = dialup)
6666cn-kr.blackholes.us (result 127.0.0.3 = Korea)
6666korea.blackholes.us
6663korea.services.net
6118no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5970ipwhois.rfc-ignorant.org
5543rmst.dnsbl.net.au
5533sbl.csma.biz
4775psbl.surriel.com
4318bl.spamcop.net
3493blacklist.spambag.org
3469dnsbl.njabl.org (union of all results)
3259wpbl.dnsbl.net.au
2886bl.csma.biz
2800cn-kr.blackholes.us (result 127.0.0.2 = China)
2800china.blackholes.us
2723dnsbl.ahbl.org (union of all results)
2611ricn.dnsbl.net.au
2462l2.spews.dnsbl.sorbs.net
2362spamsources.fabel.dk
2200dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2066l1.spews.dnsbl.sorbs.net
2066spews.dnsbl.net.au
1752dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1704dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1548no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1540dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1497pdl.blackholes.us
1474sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1473sbl.spamhaus.org
1422dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1349spam.wytnij.to
1072spam.dnsrbl.net
1068dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
987dnsbl.ahbl.org (result 127.0.0.4 = spam source)
918no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
897dnsbl.njabl.org (result 127.0.0.3 = dialup)
788work.drbl.croco.net
787probes.dnsbl.net.au
784unsure.nether.net
775no-more-funn.moensted.dk (result 127.0.0.9 = misc)
758japan.blackholes.us
700xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
700sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
700opm.blitzed.org
627taiwan.blackholes.us
618level3.blackholes.us
592dnsbl.rangers.eu.org (union of all results)
591brazil.blackholes.us
543ybl.megacity.org
481spamguard.leadmon.net (union of all results)
444blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
436spamguard.leadmon.net (result 127.0.0.2 = dialup)
366dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
353cw.blackholes.us
317relaywatcher.n13mbl.com
300comcast.blackholes.us
271dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
265charter.blackholes.us
263blackholes.intersil.net
248rr.blackholes.us
246hongkong.blackholes.us
245no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
222blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
215mexico.blackholes.us
214dnsbl.njabl.org (result 127.0.0.2 = source or relay)
208russia.blackholes.us
200interbusiness.blackholes.us
197qwest.blackholes.us
171dnsbl.njabl.org (result 127.0.0.4 = spam source)
159dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
154dnsbl.antispam.or.id
152tr.countries.nerd.dk
150turkey.blackholes.us
140ohps.dnsbl.net.au
135flowgoaway.com
130wanadoo-fr.blackholes.us
125verio.blackholes.us
123argentina.blackholes.us
117xo.blackholes.us
114above.blackholes.us
108infolink.blackholes.us
103query.bondedsender.org (not a blacklist!)
94relays.ordb.org
94multihop.dsbl.org
90singapore.blackholes.us
89internap.blackholes.us
79malaysia.blackholes.us
78osps.dnsbl.net.au
75dialup.blacklist.jippg.org (union of all results)
72dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
59thailand.blackholes.us
56mail-abuse.blacklist.jippg.org
55cybercon.blackholes.us
54blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
52relays.nether.net
51osrs.dnsbl.net.au
50dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
44spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
44ph.rbl.cluecentral.net
43inflow.blackholes.us
43dun.dnsrbl.net
42he.blackholes.us
37bellsouth.blackholes.us
35dnsbl.sorbs.net (result 127.0.0.5 = open relay)
34covad.blackholes.us
29blackholes.brainerd.net
29dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
28dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
26telstra.blackholes.us
24yipes.blackholes.us
24blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
23swbell.blackholes.us
23rackspace.blackholes.us
22blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
21rogers.blackholes.us
21blackholes.uceb.org (union of all results)
17nigeria.blackholes.us
17a2000.blackholes.us
17dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
17rdts.dnsbl.net.au
16eli.blackholes.us
14broadwing.blackholes.us
14dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
13satos.rbl.cluecentral.net
12hil.habeas.com
12exemptions.ahbl.org (not a blacklist!)
11blackholes.uceb.org (result 127.0.0.2 = open relay)
10navisite.blackholes.us
9maxim.blackholes.us
9burst.blackholes.us
9affinity.blackholes.us
8blackholes.uceb.org (result 127.0.0.3 = spam source)
8sbbl.they.com
7epoch.blackholes.us
6pajo.blackholes.us
5olm.blackholes.us
4spamsites.dnsbl.net.au
3dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
3owps.dnsbl.net.au
3dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
3no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
3bl.deadbeef.com
3dnsbl.ahbl.org (result 127.0.0.15 = open relay)
3dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
2ciberlynx.blackholes.us
2blackholes.uceb.org (result 127.0.0.6 = spam haven)
2relays.visi.com
2omrs.dnsbl.net.au
2relays.bl.kundenserver.de
2blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
2dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
1owfs.dnsbl.net.au
1dev.null.dk
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)

The blackholes.intersil.net zone "lists entrenched spammers, mainsleaze and mainsleaze wannabes who have pestered users at Intersil." The flowgoaway.com zone lists FloNetwork systems.

Survey results for all known public domain-name-based DNS blacklists. Lookups were done on the domain names of connecting IP addresses.

HitsDNS Zone
30308(total number of IP addresses whose names were tested, including 423 at SDSC)
11766(union of all domain zones)
8665abuse.rfc-ignorant.org
5952rddn.dnsbl.net.au
4048whois.rfc-ignorant.org (union of all results)
2559whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1489whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
869bulk.rhs.mailpolice.com
681rhsbl.ahbl.org
311bl.deadbeef.com
32porn.rhs.mailpolice.com
19postmaster.rfc-ignorant.org
16dsn.rfc-ignorant.org (zone not intended for this use)
1blackhole.securitysage.com
1bogusmx.rfc-ignorant.org

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

HitsDNS Zone
25403(total number of domains tested, including 285 at SDSC)
10568(union of all domain zones)
6510whois.rfc-ignorant.org (union of all results)
6058whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2220abuse.rfc-ignorant.org
1220bulk.rhs.mailpolice.com
1060postmaster.rfc-ignorant.org
872dsn.rfc-ignorant.org
778rhsbl.ahbl.org
452whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
328bogusmx.rfc-ignorant.org
327bl.deadbeef.com
158blackhole.securitysage.com
75porn.rhs.mailpolice.com
60ex.dnsbl.org (union of all results)
59ex.dnsbl.org (result 127.0.0.2 = spamsites)
39rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
39rhsbl.sorbs.net (union of all results)
36rddn.dnsbl.net.au (zone not intended for this use)
3cart00ney.surriel.com
1ex.dnsbl.org (result 127.0.0.3 = spam source)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 29 September 2004.