Blacklists Compared

4 October 2003

[ 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 query.bondedsender.org zone because it is not a blacklist, and because they are too aggressive to be widely useful the xbl.selwerd.cx and block.blars.org zones are also excluded.

HitsDNS Zone
14966(total number of IP addresses tested, including 408 at SDSC)
10875(union of most IP zones)
8225xbl.selwerd.cx
6890t1.bl.reynolds.net.au
4893blackholes.five-ten-sg.com (union of all results)
4743block.blars.org
4365psbl.surriel.com
3929blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
3534cbl.abuseat.org
3488dnsbl.sorbs.net (union of all results)
3393unconfirmed.dsbl.org
3359dynablock.easynet.nl (result 127.0.0.2 = dialup)
3359wdl.bl.reynolds.net.au
3359dynablock.easynet.nl (union of all results)
3078no-more-funn.moensted.dk (union of all results)
3061list.dsbl.org
3059dsbl.bl.reynolds.net.au
2774wpb.bl.reynolds.net.au
2666blackholes.easynet.nl
2631dnsbl.njabl.org (union of all results)
2274bl.spamcop.net
1674proxies.blackholes.easynet.nl
1593l2.spews.dnsbl.sorbs.net
1570cn-kr.blackholes.us (union of all results)
1497no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
1484dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1184dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1170dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1151unsure.nether.net
1127ipwhois.rfc-ignorant.org
1111l1.spews.dnsbl.sorbs.net
1111spews.bl.reynolds.net.au
1038no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
891bl.csma.biz
862cn-kr.blackholes.us (result 127.0.0.2 = China)
862china.blackholes.us
854sbl.spamhaus.org
844pdl.bl.reynolds.net.au
714relays.visi.com
708cn-kr.blackholes.us (result 127.0.0.3 = Korea)
708korea.blackholes.us
700korea.services.net
643blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
607ybl.megacity.org
576dnsbl.sorbs.net (result 127.0.0.10 = dialup)
527ricn.bl.reynolds.net.au
505pss.spambusters.org.ar
502cw.blackholes.us
458opm.blitzed.org
429dnsbl.njabl.org (result 127.0.0.4 = spam source)
426blackholes.intersil.net
425dnsbl.njabl.org (result 127.0.0.3 = dialup)
417brazil.blackholes.us
413spam.wytnij.to
388blacklist.spambag.org
378dialups.visi.com
355dnsbl.sorbs.net (result 127.0.0.6 = spam source)
334spamguard.leadmon.net (union of all results)
321comcast.blackholes.us
317rr.blackholes.us
317spamguard.leadmon.net (result 127.0.0.2 = dialup)
308work.drbl.croco.net
295dnsbl.njabl.org (result 127.0.0.2 = source or relay)
279multihop.dsbl.org
274sbbl.they.com
273level3.blackholes.us
252no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
251rmst.bl.reynolds.net.au
235dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
229blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
198argentina.blackholes.us
187taiwan.blackholes.us
179relays.ordb.org
159no-more-funn.moensted.dk (result 127.0.0.9 = misc)
156mail-abuse.blacklist.jippg.org
155japan.blackholes.us
155relays.bl.kundenserver.de
152russia.blackholes.us
1513y.spam.mrs.kithrup.com
149verio.blackholes.us
131query.bondedsender.org (not a blacklist!)
130probes.bl.reynolds.net.au
128qwest.blackholes.us
128dnsbl.antispam.or.id
123mexico.blackholes.us
122xo.blackholes.us
112charter.blackholes.us
109lbl.lagengymnastik.dk
95osrs.bl.reynolds.net.au
95ohps.bl.reynolds.net.au
87relays.nether.net
85blackholes.brainerd.net
83flowgoaway.com
82spam.shri.net
78dialup.blacklist.jippg.org (union of all results)
77dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
75osps.bl.reynolds.net.au
74blackholes.uceb.org (union of all results)
73no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
65tr.countries.nerd.dk
64turkey.blackholes.us
62interbusiness.blackholes.us
59internap.blackholes.us
57wanadoo-fr.blackholes.us
56dun.dnsrbl.net
51hongkong.blackholes.us
50bellsouth.blackholes.us
47vox.schpider.com
47infolink.blackholes.us
46blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
43telstra.blackholes.us
43singapore.blackholes.us
42inflow.blackholes.us
41no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
40above.blackholes.us
39nigeria.blackholes.us
37rogers.blackholes.us
37he.blackholes.us
34blackholes.uceb.org (result 127.0.0.3 = spam source)
34dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
33blackholes.uceb.org (result 127.0.0.2 = open relay)
31satos.rbl.cluecentral.net
29spam.exsilia.net (union of all results)
28covad.blackholes.us
26rdts.bl.reynolds.net.au
24a2000.blackholes.us
22rackspace.blackholes.us
21yipes.blackholes.us
21cybercon.blackholes.us
21ph.rbl.cluecentral.net
20blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
19bl.deadbeef.com
17spam.exsilia.net (result 127.0.0.2 = spam source)
16malaysia.blackholes.us
15thailand.blackholes.us
15eli.blackholes.us
15broadwing.blackholes.us
15spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
14blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
13pajo.blackholes.us
12spam.exsilia.net (result 127.0.0.3 = virus source)
11burst.blackholes.us
10no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
10blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
8affinity.blackholes.us
8no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
6owps.bl.reynolds.net.au
6dev.null.dk
5spamsources.yamta.org (result 127.0.0.2 = spam source)
5olm.blackholes.us
5maxim.blackholes.us
5lauderdale.blackholes.us
5epoch.blackholes.us
4blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
4t3direct.bl.reynolds.net.au
3navisite.blackholes.us
3blackholes.uceb.org (result 127.0.0.4 = spam source network)
3spamsites.bl.reynolds.net.au
2dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
1ciberlynx.blackholes.us
1owfs.bl.reynolds.net.au
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)

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
14966(total number of IP addresses whose names were tested, including 408 at SDSC)
6091(union of all domain zones)
3806abuse.rfc-ignorant.org
2577rddn.bl.reynolds.net.au
1232whois.rfc-ignorant.org (union of all results)
878whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
546bulk.rhs.mailpolice.com
520endn.bl.reynolds.net.au
519spamdomains.blackholes.easynet.nl
354whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
146blackhole.securitysage.com
130bl.deadbeef.com
79porn.rhs.mailpolice.com
24dsn.rfc-ignorant.org (zone not intended for this use)
11postmaster.rfc-ignorant.org

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

HitsDNS Zone
9163(total number of domains tested, including 237 at SDSC)
3267(union of all domain zones)
1103bulk.rhs.mailpolice.com
914abuse.rfc-ignorant.org
889whois.rfc-ignorant.org (union of all results)
747whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
635endn.bl.reynolds.net.au
614spamdomains.blackholes.easynet.nl
381postmaster.rfc-ignorant.org
349dsn.rfc-ignorant.org
184rddn.bl.reynolds.net.au (zone not intended for this use)
142whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
114blackhole.securitysage.com
64bl.deadbeef.com
53porn.rhs.mailpolice.com
37ex.dnsbl.org (union of all results)
33ex.dnsbl.org (result 127.0.0.2 = spamsites)
7in.dnsbl.org (union of all results)
4ex.dnsbl.org (result 127.0.0.3 = spam source)
4in.dnsbl.org (result 127.0.0.6 = unconfirmed opt-in)
3rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
3in.dnsbl.org (result 127.0.0.2 = spam source)
3rhsbl.sorbs.net (union of all results)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 12 October 2003.