Blacklists Compared

17 May 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 xbl.selwerd.cx and block.blars.org zones zone because they are too aggressive to be widely useful, and the blocktest.relays.osirusoft.com and query.bondedsender.org zones are also excluded because they are not blacklists.

HitsDNS Zone
12113(total number of IP addresses tested, including 434 at SDSC)
8073(union of most IP zones)
6420xbl.selwerd.cx
3819t1.bl.reynolds.net.au
3647blackholes.five-ten-sg.com (union of all results)
3250block.blars.org
2986blackholes.easynet.nl
2755no-more-funn.moensted.dk (union of all results)
2751unconfirmed.dsbl.org
2716wpb.bl.reynolds.net.au
2530relays.osirusoft.com (union of all results)
2471dnsbl.njabl.org (union of all results)
2449list.dsbl.org
2414dnsbl.sorbs.net (union of all results)
2365blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
2281dsbl.bl.reynolds.net.au
2071dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
2051proxies.blackholes.easynet.nl
1835bl.spamcop.net
1785proxies.relays.monkeys.com (result 127.0.0.2 = open proxy)
1785proxies.relays.monkeys.com (union of all results)
1739dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1595dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1541cn-kr.blackholes.us (union of all results)
1448no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
1250opm.blitzed.org
1197relays.osirusoft.com (result 127.0.0.9 = open proxy)
1181socks.relays.osirusoft.com
992ipwhois.rfc-ignorant.org
964blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
950rddn.bl.reynolds.net.au
857spews.bl.reynolds.net.au
836cn-kr.blackholes.us (result 127.0.0.2 = China)
836china.blackholes.us
785spews.relays.osirusoft.com
763relays.osirusoft.com (result 127.0.0.4 = spam source)
719spam.dnsrbl.net
706no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
705cn-kr.blackholes.us (result 127.0.0.3 = Korea)
705korea.blackholes.us
698korea.services.net
631spamhaus.relays.osirusoft.com
628sbl.spamhaus.org
617work.drbl.croco.net
601probes.bl.reynolds.net.au
579cw.blackholes.us
573spamsources.fabel.dk
568relays.osirusoft.com (result 127.0.0.6 = spamsites)
512ybl.megacity.org
503blackholes.intersil.net
482ztl.dorkslayers.com
427dnsbl.njabl.org (result 127.0.0.4 = spam source)
371pdl.bl.reynolds.net.au
369mail-abuse.blacklist.jippg.org
352blacklist.spambag.org
352dnsbl.delink.net
328relays.osirusoft.com (result 127.0.0.2 = relay)
327spam.wytnij.to
327inputs.relays.osirusoft.com
304dnsbl.njabl.org (result 127.0.0.2 = source or relay)
284no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
266level3.blackholes.us
259spamguard.leadmon.net (union of all results)
254sbbl.they.com
254lbl.lagengymnastik.dk
240spamguard.leadmon.net (result 127.0.0.2 = dialup)
232blocktest.relays.osirusoft.com (not a blacklist!)
227multihop.dsbl.org
226blackholes.uceb.org (union of all results)
208blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
207rr.blackholes.us
185brazil.blackholes.us
179blackhole.compu.net
173dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
170dun.dnsrbl.net
165spamsources.relays.osirusoft.com (union of all results)
156spamsources.relays.osirusoft.com (result 127.0.0.4 = spam source)
155dynablock.easynet.nl (result 127.0.0.2 = dialup)
155wdl.bl.reynolds.net.au
155dynablock.easynet.nl (union of all results)
154relays.bl.kundenserver.de
149verio.blackholes.us
149dialups.relays.osirusoft.com (union of all results)
148taiwan.blackholes.us
1453y.spam.mrs.kithrup.com
141no-more-funn.moensted.dk (result 127.0.0.9 = misc)
139dnsbl.njabl.org (result 127.0.0.3 = dialup)
139query.bondedsender.org (not a blacklist!)
137dialups.visi.com
136dialups.relays.osirusoft.com (result 127.0.0.3 = dialup)
133osps.bl.reynolds.net.au
123blackholes.uceb.org (result 127.0.0.3 = spam source)
118xo.blackholes.us
116relays.ordb.org
116bl.deadbeef.com
114no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
111flowgoaway.com
108charter.blackholes.us
98ohps.bl.reynolds.net.au
96qwest.blackholes.us
95dnsbl.sorbs.net (result 127.0.0.6 = spam source)
92japan.blackholes.us
91osrs.bl.reynolds.net.au
87rackspace.blackholes.us
85relays.osirusoft.com (result 127.0.0.3 = dialup)
84internap.blackholes.us
73hongkong.blackholes.us
64vox.schpider.com
64interbusiness.blackholes.us
64blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
63argentina.blackholes.us
59blackholes.uceb.org (result 127.0.0.2 = relay)
54rmst.bl.reynolds.net.au
53blackholes.brainerd.net
51bl.deadbeef.com
47tr.countries.nerd.dk
44russia.blackholes.us
37inflow.blackholes.us
37blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
34above.blackholes.us
33no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
32proxy.relays.osirusoft.com
30blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
28he.blackholes.us
28spam.exsilia.net (union of all results)
27cybercon.blackholes.us
26dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
26orbs.dorkslayers.com
26dialup.blacklist.jippg.org (union of all results)
25eli.blackholes.us
24wanadoo-fr.blackholes.us
24nigeria.blackholes.us
24infolink.blackholes.us
23singapore.blackholes.us
21thailand.blackholes.us
21no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
20spam.exsilia.net (result 127.0.0.2 = spam source)
19covad.blackholes.us
17spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
16malaysia.blackholes.us
14spammers.v6net.org
14blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
14ph.rbl.cluecentral.net
13telstra.blackholes.us
13epoch.blackholes.us
13dialups.relays.osirusoft.com (result 127.0.0.4 = no reverse DNS)
12yipes.blackholes.us
12broadwing.blackholes.us
10valuenet.blackholes.us
10blackholes.uceb.org (result 127.0.0.4 = spam source network)
8dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
8no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
8spam.exsilia.net (result 127.0.0.3 = virus source)
7maxim.blackholes.us
7t3direct.bl.reynolds.net.au
7omrs.bl.reynolds.net.au
7dev.null.dk
6valueweb.blackholes.us
6skynetweb.blackholes.us
6affinity.blackholes.us
6spamsources.relays.osirusoft.com (result 127.0.0.6 = spamhaus)
5pajo.blackholes.us
5dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
5owps.bl.reynolds.net.au
4hostnoc.blackholes.us
4spamsources.relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
3olm.blackholes.us
3dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
3dnsbl.sorbs.net (result 127.0.0.5 = open relay)
3relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1ciberlynx.blackholes.us
1blackholes.uceb.org (result 127.0.0.6 = spam haven)
1owfs.bl.reynolds.net.au
1relays.dorkslayers.com

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
12113(total number of IP addresses whose names were tested, including 434 at SDSC)
3292(union of all domain zones)
2440abuse.rfc-ignorant.org
950rddn.bl.reynolds.net.au
647whois.rfc-ignorant.org (union of all results)
365whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
282whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
116bl.deadbeef.com
17dsn.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
7610(total number of domains tested, including 232 at SDSC)
1527(union of all domain zones)
727abuse.rfc-ignorant.org
600whois.rfc-ignorant.org (union of all results)
422whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
394postmaster.rfc-ignorant.org
342dsn.rfc-ignorant.org
178whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
93bl.deadbeef.com
32ex.dnsbl.org (union of all results)
29ex.dnsbl.org (result 127.0.0.2 = spamsites)
8bandwidth-pigs.monkeys.com
6in.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)
2rddn.bl.reynolds.net.au
2in.dnsbl.org (result 127.0.0.2 = spam source)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 23 May 2003.