Blacklists Compared

17 April 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
27286(total number of IP addresses tested, including 379 at SDSC)
22174(union of most IP zones)
16364t1.dnsbl.net.au
13802blackholes.five-ten-sg.com (union of all results)
13632block.blars.org
12772blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
12430sbl-xbl.spamhaus.org (union of all results)
11533dnsbl.sorbs.net (union of all results)
11119xbl.spamhaus.org (union of all results)
11089cbl.abuseat.org
11084xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11081sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
8373unconfirmed.dsbl.org
8274dynablock.njabl.org
8217list.dsbl.org
8216dsbl.dnsbl.net.au
7970dnsbl.sorbs.net (result 127.0.0.10 = dialup)
6675no-more-funn.moensted.dk (union of all results)
4733sbl.csma.biz
4683cn-kr.blackholes.us (union of all results)
4625dnsbl.njabl.org (union of all results)
4031bl.spamcop.net
3884ipwhois.rfc-ignorant.org
3756wpbl.dnsbl.net.au
3464psbl.surriel.com
3072l2.spews.dnsbl.sorbs.net
3061no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
2919dnsbl.ahbl.org (union of all results)
2839dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2711cn-kr.blackholes.us (result 127.0.0.2 = China)
2711china.blackholes.us
2687spews.dnsbl.net.au
2661l1.spews.dnsbl.sorbs.net
2305spam.wytnij.to
2299rmst.dnsbl.net.au
2198pdl.blackholes.us
2015no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1996bl.csma.biz
1972cn-kr.blackholes.us (result 127.0.0.3 = Korea)
1972korea.blackholes.us
1872blacklist.spambag.org
1862dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1861korea.services.net
1796dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1684dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1503sbl.spamhaus.org
1502sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1466spamsources.fabel.dk
1279dnsbl.njabl.org (result 127.0.0.3 = dialup)
1231unsure.nether.net
1179comcast.blackholes.us
1053dnsbl.ahbl.org (result 127.0.0.4 = spam source)
983relays.visi.com
972dnsbl.sorbs.net (result 127.0.0.6 = spam source)
927xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
926sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
926opm.blitzed.org
812ybl.megacity.org
786ricn.dnsbl.net.au
755spamguard.leadmon.net (union of all results)
741no-more-funn.moensted.dk (result 127.0.0.9 = misc)
722spamguard.leadmon.net (result 127.0.0.2 = dialup)
687blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
659probes.dnsbl.net.au
643brazil.blackholes.us
632work.drbl.croco.net
600no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
485cw.blackholes.us
463taiwan.blackholes.us
459rr.blackholes.us
437pss.spambusters.org.ar
427level3.blackholes.us
425japan.blackholes.us
397dnsbl.njabl.org (result 127.0.0.4 = spam source)
356rbl.rangers.eu.org (union of all results)
308charter.blackholes.us
297dnsbl.antispam.or.id
289hongkong.blackholes.us
272no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
269blackholes.intersil.net
254blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
228wanadoo-fr.blackholes.us
222mexico.blackholes.us
196dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
192turkey.blackholes.us
192tr.countries.nerd.dk
183ohps.dnsbl.net.au
178infolink.blackholes.us
176russia.blackholes.us
160interbusiness.blackholes.us
156qwest.blackholes.us
154rbl.rangers.eu.org (result 127.0.0.4 = dialup)
154multihop.dsbl.org
152osps.dnsbl.net.au
148verio.blackholes.us
144relays.ordb.org
144hil.habeas.com
141dnsbl.njabl.org (result 127.0.0.2 = source or relay)
1383y.spam.mrs.kithrup.com
131argentina.blackholes.us
127singapore.blackholes.us
122dialup.blacklist.jippg.org (union of all results)
118dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
110xo.blackholes.us
106dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
99internap.blackholes.us
99mail-abuse.blacklist.jippg.org
98dun.dnsrbl.net
96malaysia.blackholes.us
94rbl.rangers.eu.org (result 127.0.0.3 = spam haven)
89dnsbl.sorbs.net (result 127.0.0.5 = open relay)
76osrs.dnsbl.net.au
75flowgoaway.com
68ph.rbl.cluecentral.net
67relays.nether.net
63he.blackholes.us
62telstra.blackholes.us
62sbbl.they.com
61dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
57rogers.blackholes.us
57rbl.rangers.eu.org (result 127.0.0.2 = spam source)
50bellsouth.blackholes.us
49thailand.blackholes.us
47broadwing.blackholes.us
42cybercon.blackholes.us
41inflow.blackholes.us
38blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
36covad.blackholes.us
36dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
35rdts.dnsbl.net.au
33spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
31swbell.blackholes.us
31blackholes.uceb.org (union of all results)
29blackholes.brainerd.net
27rbl.rangers.eu.org (result 127.0.0.10 = virus notices)
26above.blackholes.us
25a2000.blackholes.us
24nigeria.blackholes.us
24blackholes.uceb.org (result 127.0.0.2 = open relay)
24exemptions.ahbl.org (not a blacklist!)
23blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
22yipes.blackholes.us
21rackspace.blackholes.us
21rbl.rangers.eu.org (result 127.0.0.1 = misc)
20spamsources.yamta.org (result 127.0.0.2 = spam source)
20query.bondedsender.org (not a blacklist!)
18eli.blackholes.us
13affinity.blackholes.us
13blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
12owps.dnsbl.net.au
12satos.rbl.cluecentral.net
10epoch.blackholes.us
9olm.blackholes.us
9bl.deadbeef.com
8pajo.blackholes.us
7navisite.blackholes.us
7maxim.blackholes.us
7burst.blackholes.us
7blackholes.uceb.org (result 127.0.0.3 = spam source)
7no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
7no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
7blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
6relays.bl.kundenserver.de
5omrs.dnsbl.net.au
5blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
4dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
4dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
2rbl.rangers.eu.org (result 127.0.0.5 = relay output)
2spamsites.dnsbl.net.au
2blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
2dnsbl.ahbl.org (result 127.0.0.15 = open relay)
1rbl.rangers.eu.org (result 127.0.0.9 = virus source)
1owfs.dnsbl.net.au
1dev.null.dk
1no-more-funn.moensted.dk (result 127.0.0.11 = repeated probes)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)

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
27286(total number of IP addresses whose names were tested, including 379 at SDSC)
12728(union of all domain zones)
9191abuse.rfc-ignorant.org
7524rddn.dnsbl.net.au
3850whois.rfc-ignorant.org (union of all results)
2618whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1232whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
764bulk.rhs.mailpolice.com
576rhsbl.ahbl.org
376blackhole.securitysage.com
247bl.deadbeef.com
62porn.rhs.mailpolice.com
21postmaster.rfc-ignorant.org
15dsn.rfc-ignorant.org (zone not intended for this use)
5bogusmx.rfc-ignorant.org
1ex.dnsbl.org (result 127.0.0.2 = spamsites)
1ex.dnsbl.org (union of all results)

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

HitsDNS Zone
23555(total number of domains tested, including 397 at SDSC)
7609(union of all domain zones)
3111whois.rfc-ignorant.org (union of all results)
2725whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2121abuse.rfc-ignorant.org
1762bulk.rhs.mailpolice.com
1471rhsbl.ahbl.org
934postmaster.rfc-ignorant.org
843dsn.rfc-ignorant.org
794blackhole.securitysage.com
386whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
311bogusmx.rfc-ignorant.org
165bl.deadbeef.com
70porn.rhs.mailpolice.com
52ex.dnsbl.org (union of all results)
48ex.dnsbl.org (result 127.0.0.2 = spamsites)
46rddn.dnsbl.net.au (zone not intended for this use)
32rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
32rhsbl.sorbs.net (union of all results)
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 14 May 2004.