Blacklists Compared

8 May 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
27296(total number of IP addresses tested, including 250 at SDSC)
21951(union of most IP zones)
16013t1.dnsbl.net.au
14008block.blars.org
13938blackholes.five-ten-sg.com (union of all results)
12920blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
11797sbl-xbl.spamhaus.org (union of all results)
11279dnsbl.sorbs.net (union of all results)
10172xbl.spamhaus.org (union of all results)
10154cbl.abuseat.org
10146sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
10144xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
8125unconfirmed.dsbl.org
8073dynablock.njabl.org
8003list.dsbl.org
7998dsbl.dnsbl.net.au
7741dnsbl.sorbs.net (result 127.0.0.10 = dialup)
6776no-more-funn.moensted.dk (union of all results)
4892cn-kr.blackholes.us (union of all results)
4613sbl.csma.biz
4281dnsbl.njabl.org (union of all results)
3892psbl.surriel.com
3752ipwhois.rfc-ignorant.org
3469wpbl.dnsbl.net.au
3243l2.spews.dnsbl.sorbs.net
3209dnsbl.ahbl.org (union of all results)
3055no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
2996bl.spamcop.net
2868spews.dnsbl.net.au
2864l1.spews.dnsbl.sorbs.net
2798cn-kr.blackholes.us (result 127.0.0.2 = China)
2798china.blackholes.us
2519rmst.dnsbl.net.au
2460dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2242blacklist.spambag.org
2094cn-kr.blackholes.us (result 127.0.0.3 = Korea)
2094korea.blackholes.us
2041spam.wytnij.to
2016korea.services.net
2011no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1993bl.csma.biz
1984pdl.blackholes.us
1841dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1816dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1803sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1803sbl.spamhaus.org
1628dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1421spamsources.fabel.dk
1364dnsbl.ahbl.org (result 127.0.0.4 = spam source)
1253dnsbl.njabl.org (result 127.0.0.3 = dialup)
1221dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1039comcast.blackholes.us
948xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
948sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
945opm.blitzed.org
913work.drbl.croco.net
833no-more-funn.moensted.dk (result 127.0.0.9 = misc)
824unsure.nether.net
764ybl.megacity.org
722blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
695spamguard.leadmon.net (union of all results)
674relays.visi.com
645ricn.dnsbl.net.au
643no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
617brazil.blackholes.us
605spamguard.leadmon.net (result 127.0.0.2 = dialup)
586probes.dnsbl.net.au
526japan.blackholes.us
508level3.blackholes.us
507cw.blackholes.us
465rr.blackholes.us
448taiwan.blackholes.us
416dnsbl.njabl.org (result 127.0.0.4 = spam source)
397rbl.rangers.eu.org (union of all results)
361blackholes.intersil.net
314dnsbl.antispam.or.id
286charter.blackholes.us
261russia.blackholes.us
256no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
237dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
221blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
207hongkong.blackholes.us
204rbl.rangers.eu.org (result 127.0.0.4 = dialup)
203mexico.blackholes.us
186qwest.blackholes.us
169singapore.blackholes.us
168dnsbl.njabl.org (result 127.0.0.2 = source or relay)
1683y.spam.mrs.kithrup.com
164wanadoo-fr.blackholes.us
160tr.countries.nerd.dk
156turkey.blackholes.us
155infolink.blackholes.us
155relays.ordb.org
145argentina.blackholes.us
142verio.blackholes.us
135multihop.dsbl.org
134osps.dnsbl.net.au
133ohps.dnsbl.net.au
126dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
117dnsbl.sorbs.net (result 127.0.0.5 = open relay)
111flowgoaway.com
105interbusiness.blackholes.us
105dun.dnsrbl.net
101pss.spambusters.org.ar
100hil.habeas.com
96rbl.rangers.eu.org (result 127.0.0.3 = spam haven)
93malaysia.blackholes.us
92sbbl.they.com
89internap.blackholes.us
88spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
84xo.blackholes.us
83ph.rbl.cluecentral.net
76mail-abuse.blacklist.jippg.org
72relays.nether.net
71osrs.dnsbl.net.au
61thailand.blackholes.us
56swbell.blackholes.us
55bellsouth.blackholes.us
54he.blackholes.us
52spamsources.yamta.org (result 127.0.0.2 = spam source)
52above.blackholes.us
51dialup.blacklist.jippg.org (union of all results)
50rbl.rangers.eu.org (result 127.0.0.2 = spam source)
48dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
45telstra.blackholes.us
40dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
39inflow.blackholes.us
38rogers.blackholes.us
37cybercon.blackholes.us
36dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
29covad.blackholes.us
27rackspace.blackholes.us
27nigeria.blackholes.us
26rdts.dnsbl.net.au
25a2000.blackholes.us
25rbl.rangers.eu.org (result 127.0.0.10 = virus notices)
25blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
24exemptions.ahbl.org (not a blacklist!)
23yipes.blackholes.us
21blackholes.brainerd.net
20eli.blackholes.us
20satos.rbl.cluecentral.net
20blackholes.uceb.org (union of all results)
19blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
18rbl.rangers.eu.org (result 127.0.0.1 = misc)
17broadwing.blackholes.us
16blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
15query.bondedsender.org (not a blacklist!)
13olm.blackholes.us
11blackholes.uceb.org (result 127.0.0.3 = spam source)
11owps.dnsbl.net.au
10navisite.blackholes.us
10blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
9epoch.blackholes.us
9blackholes.uceb.org (result 127.0.0.2 = open relay)
8relays.bl.kundenserver.de
7pajo.blackholes.us
7dnsbl.ahbl.org (result 127.0.0.15 = open relay)
6no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
6bl.deadbeef.com
5maxim.blackholes.us
5burst.blackholes.us
5affinity.blackholes.us
4blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
4dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
3dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
2ciberlynx.blackholes.us
2rbl.rangers.eu.org (result 127.0.0.9 = worm source)
2rbl.rangers.eu.org (result 127.0.0.5 = relay output)
2spamsites.dnsbl.net.au
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
1spamsources.yamta.org (result 127.0.0.3 = repeated probes)
1no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
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
27296(total number of IP addresses whose names were tested, including 250 at SDSC)
12550(union of all domain zones)
8705abuse.rfc-ignorant.org
7059rddn.dnsbl.net.au
3945whois.rfc-ignorant.org (union of all results)
2606whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1340whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
995bulk.rhs.mailpolice.com
772rhsbl.ahbl.org
395blackhole.securitysage.com
237bl.deadbeef.com
49porn.rhs.mailpolice.com
18dsn.rfc-ignorant.org (zone not intended for this use)
16postmaster.rfc-ignorant.org
2bogusmx.rfc-ignorant.org

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

HitsDNS Zone
22798(total number of domains tested, including 291 at SDSC)
7567(union of all domain zones)
3357whois.rfc-ignorant.org (union of all results)
2955whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2122abuse.rfc-ignorant.org
1567bulk.rhs.mailpolice.com
1260rhsbl.ahbl.org
898postmaster.rfc-ignorant.org
801dsn.rfc-ignorant.org
622blackhole.securitysage.com
402whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
269bogusmx.rfc-ignorant.org
170bl.deadbeef.com
70porn.rhs.mailpolice.com
48ex.dnsbl.org (union of all results)
43ex.dnsbl.org (result 127.0.0.2 = spamsites)
32rhsbl.sorbs.net (union of all results)
31rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
31rddn.dnsbl.net.au (zone not intended for this use)
5ex.dnsbl.org (result 127.0.0.3 = spam source)
3rhsbl.sorbs.net (result 127.0.0.12 = domain does not send mail)
3cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 27 May 2004.