Blacklists Compared

30 August 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
14445(total number of IP addresses tested, including 408 at SDSC)
9598(union of most IP zones)
7805xbl.selwerd.cx
4242block.blars.org
4227blackholes.five-ten-sg.com (union of all results)
3993t1.bl.reynolds.net.au
3104blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
3014no-more-funn.moensted.dk (union of all results)
2820wpb.bl.reynolds.net.au
2818blackholes.easynet.nl
2788dnsbl.sorbs.net (union of all results)
2534dnsbl.njabl.org (union of all results)
2315cbl.abuseat.org
2220psbl.surriel.com
2179unconfirmed.dsbl.org
1997dynablock.easynet.nl (result 127.0.0.2 = dialup)
1997dynablock.easynet.nl (union of all results)
1910dsbl.bl.reynolds.net.au
1910list.dsbl.org
1713blackhole.compu.net
1680cn-kr.blackholes.us (union of all results)
1671proxies.blackholes.easynet.nl
1568bl.spamcop.net
1486no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
1349dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1216dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1165dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1091l2.spews.dnsbl.sorbs.net
1086spews.bl.reynolds.net.au
1059ipwhois.rfc-ignorant.org
985cn-kr.blackholes.us (result 127.0.0.2 = China)
985china.blackholes.us
959proxies.relays.monkeys.com (result 127.0.0.2 = open proxy)
959proxies.relays.monkeys.com (union of all results)
940no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
887unsure.nether.net
873sbl.spamhaus.org
784blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
737l1.spews.dnsbl.sorbs.net
695cn-kr.blackholes.us (result 127.0.0.3 = Korea)
695korea.blackholes.us
686korea.services.net
652pdl.bl.reynolds.net.au
605relays.visi.com
585dnsbl.njabl.org (result 127.0.0.4 = spam source)
562ybl.megacity.org
527pss.spambusters.org.ar
519dialups.visi.com
505blacklist.spambag.org
504blackholes.intersil.net
468cw.blackholes.us
468opm.blitzed.org
436dnsbl.delink.net
348dnsbl.njabl.org (result 127.0.0.3 = dialup)
303spam.wytnij.to
280spamguard.leadmon.net (union of all results)
274no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
269lbl.lagengymnastik.dk
265dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
263spamguard.leadmon.net (result 127.0.0.2 = dialup)
259brazil.blackholes.us
259dnsbl.sorbs.net (result 127.0.0.6 = spam source)
253dnsbl.njabl.org (result 127.0.0.2 = source or relay)
243dnsbl.sorbs.net (result 127.0.0.10 = dialup)
238multihop.dsbl.org
237blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
226level3.blackholes.us
209taiwan.blackholes.us
192relays.ordb.org
191rr.blackholes.us
190no-more-funn.moensted.dk (result 127.0.0.9 = misc)
187sbbl.they.com
181comcast.blackholes.us
180relaywatcher.n13mbl.com
171verio.blackholes.us
153qwest.blackholes.us
142relays.bl.kundenserver.de
1383y.spam.mrs.kithrup.com
134mail-abuse.blacklist.jippg.org
126query.bondedsender.org (not a blacklist!)
125dnsbl.antispam.or.id
117internap.blackholes.us
116bellsouth.blackholes.us
113japan.blackholes.us
108hongkong.blackholes.us
105blackholes.brainerd.net
99rmst.bl.reynolds.net.au
94work.drbl.croco.net
93mexico.blackholes.us
91xo.blackholes.us
90vox.schpider.com
90spam.shri.net
88osrs.bl.reynolds.net.au
84argentina.blackholes.us
83relays.nether.net
76osps.bl.reynolds.net.au
73probes.bl.reynolds.net.au
71blackholes.uceb.org (union of all results)
70russia.blackholes.us
69charter.blackholes.us
65infolink.blackholes.us
62ohps.bl.reynolds.net.au
58singapore.blackholes.us
58no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
56tr.countries.nerd.dk
55turkey.blackholes.us
55flowgoaway.com
54he.blackholes.us
52dun.dnsrbl.net
50interbusiness.blackholes.us
48blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
43no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
39inflow.blackholes.us
39dialup.blacklist.jippg.org (union of all results)
38dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
37above.blackholes.us
36wanadoo-fr.blackholes.us
35nigeria.blackholes.us
34malaysia.blackholes.us
34blackholes.uceb.org (result 127.0.0.3 = spam source)
34dev.null.dk
34satos.rbl.cluecentral.net
33rackspace.blackholes.us
31rogers.blackholes.us
31blackholes.uceb.org (result 127.0.0.2 = open relay)
29spam.exsilia.net (union of all results)
28ph.rbl.cluecentral.net
27covad.blackholes.us
24cybercon.blackholes.us
24spamsources.fabel.dk
24spam.exsilia.net (result 127.0.0.2 = spam source)
22telstra.blackholes.us
19thailand.blackholes.us
19broadwing.blackholes.us
18blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
18bl.deadbeef.com
17eli.blackholes.us
16blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
15yipes.blackholes.us
15spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
14blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
13pajo.blackholes.us
13a2000.blackholes.us
13no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
9olm.blackholes.us
9maxim.blackholes.us
9no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
8spamsites.bl.reynolds.net.au
7blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
6lauderdale.blackholes.us
6affinity.blackholes.us
5epoch.blackholes.us
5burst.blackholes.us
5dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
5spam.exsilia.net (result 127.0.0.3 = virus source)
4dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
4owps.bl.reynolds.net.au
4t3direct.bl.reynolds.net.au
4blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
2spamsources.yamta.org (result 127.0.0.2 = spam source)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
1no-more-funn.moensted.dk (result 127.0.0.11 = repeated probes)

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. The blackhole.compu.net zone "is primarily for hosts which were not blocked by other blackhole sites and spammed compu.net."

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

HitsDNS Zone
14445(total number of IP addresses whose names were tested, including 408 at SDSC)
5137(union of all domain zones)
2720abuse.rfc-ignorant.org
1925rddn.bl.reynolds.net.au
925whois.rfc-ignorant.org (union of all results)
677endn.bl.reynolds.net.au
667spamdomains.blackholes.easynet.nl
568bulk.rhs.mailpolice.com
514whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
411whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
194blackhole.securitysage.com
141bl.deadbeef.com
87porn.rhs.mailpolice.com
33dsn.rfc-ignorant.org (zone not intended for this use)
14postmaster.rfc-ignorant.org

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

HitsDNS Zone
15926(total number of domains tested, including 225 at SDSC)
4204(union of all domain zones)
1264whois.rfc-ignorant.org (union of all results)
1211abuse.rfc-ignorant.org
1067bulk.rhs.mailpolice.com
1062whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
931endn.bl.reynolds.net.au
874spamdomains.blackholes.easynet.nl
552postmaster.rfc-ignorant.org
524dsn.rfc-ignorant.org
202whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
172blackhole.securitysage.com
125bl.deadbeef.com
107porn.rhs.mailpolice.com
35rddn.bl.reynolds.net.au (zone not intended for this use)
8bandwidth-pigs.monkeys.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 7 September 2003.