Blacklists Compared

16 October 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
33257(total number of IP addresses tested, including 482 at SDSC)
27671(union of most IP zones)
20842t1.dnsbl.net.au
18578blackholes.five-ten-sg.com (union of all results)
17812blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
14501dnsbl.sorbs.net (union of all results)
10229sbl-xbl.spamhaus.org (union of all results)
9810unconfirmed.dsbl.org
9720list.dsbl.org
9719dsbl.dnsbl.net.au
9433dnsbl.sorbs.net (result 127.0.0.10 = dialup)
9395no-more-funn.moensted.dk (union of all results)
9258dynablock.njabl.org
8714xbl.spamhaus.org (union of all results)
8591cbl.abuseat.org
8570xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
8566sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
8238cn-kr.blackholes.us (union of all results)
5943sbl.csma.biz
5378no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5363cn-kr.blackholes.us (result 127.0.0.3 = Korea)
5363korea.blackholes.us
5362korea.services.net
5329psbl.surriel.com
5306rmst.dnsbl.net.au
4632bl.spamcop.net
4486dnsbl.njabl.org (union of all results)
4193blacklist.spambag.org
3358wpbl.dnsbl.net.au
3343l2.spews.dnsbl.sorbs.net
2987bl.csma.biz
2969dnsbl.ahbl.org (union of all results)
2949l1.spews.dnsbl.sorbs.net
2945spews.dnsbl.net.au
2927dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2875cn-kr.blackholes.us (result 127.0.0.2 = China)
2875china.blackholes.us
2337ipwhois.rfc-ignorant.org
2307ricn.dnsbl.net.au
2302dnsbl.sorbs.net (result 127.0.0.6 = spam source)
2052spamsources.fabel.dk
1983dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
1958no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1838pdl.blackholes.us
1680dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1650sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1649sbl.spamhaus.org
1540spam.wytnij.to
1381dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1284block.blars.org
1232unsure.nether.net
1149dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1113dnsbl.ahbl.org (result 127.0.0.4 = spam source)
1059dnsbl.njabl.org (result 127.0.0.3 = dialup)
1006no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
982work.drbl.croco.net
926brazil.blackholes.us
872no-more-funn.moensted.dk (result 127.0.0.9 = misc)
861bl.spamcannibal.org
802dnsbl.rangers.eu.org (union of all results)
783japan.blackholes.us
761level3.blackholes.us
685probes.dnsbl.net.au
675xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
675sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
640opm.blitzed.org
624spamguard.leadmon.net (union of all results)
619taiwan.blackholes.us
591dnsbl.antispam.or.id
573comcast.blackholes.us
562dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
517spamguard.leadmon.net (result 127.0.0.2 = dialup)
478blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
448charter.blackholes.us
436ybl.megacity.org
361dnsbl.njabl.org (result 127.0.0.4 = spam source)
326cw.blackholes.us
311rr.blackholes.us
309mexico.blackholes.us
262blackholes.intersil.net
234qwest.blackholes.us
230hongkong.blackholes.us
212russia.blackholes.us
209interbusiness.blackholes.us
209no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
193blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
176dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
172dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
170relaywatcher.n13mbl.com
155dnsbl.njabl.org (result 127.0.0.2 = source or relay)
149verio.blackholes.us
148turkey.blackholes.us
148dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
148ohps.dnsbl.net.au
142tr.countries.nerd.dk
141osps.dnsbl.net.au
140argentina.blackholes.us
132wanadoo-fr.blackholes.us
125flowgoaway.com
122xo.blackholes.us
118query.bondedsender.org (not a blacklist!)
113singapore.blackholes.us
105spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
99internap.blackholes.us
95infolink.blackholes.us
94multihop.dsbl.org
89relays.ordb.org
87thailand.blackholes.us
73malaysia.blackholes.us
70dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
63bellsouth.blackholes.us
61cybercon.blackholes.us
57mail-abuse.blacklist.jippg.org
54relays.nether.net
53dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
53ph.rbl.cluecentral.net
52above.blackholes.us
50osrs.dnsbl.net.au
50dialup.blacklist.jippg.org (union of all results)
47telstra.blackholes.us
47dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
43inflow.blackholes.us
43he.blackholes.us
41swbell.blackholes.us
39covad.blackholes.us
36nigeria.blackholes.us
35blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
34rogers.blackholes.us
32blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
32blackholes.brainerd.net
26blackholes.uceb.org (union of all results)
25broadwing.blackholes.us
25rdts.dnsbl.net.au
24rackspace.blackholes.us
24a2000.blackholes.us
24dnsbl.sorbs.net (result 127.0.0.5 = open relay)
23maxim.blackholes.us
23dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
21hil.habeas.com
20yipes.blackholes.us
20dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
20blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
19eli.blackholes.us
16exemptions.ahbl.org (not a blacklist!)
14epoch.blackholes.us
12affinity.blackholes.us
12blackholes.uceb.org (result 127.0.0.3 = spam source)
11satos.rbl.cluecentral.net
10olm.blackholes.us
9navisite.blackholes.us
8blackholes.uceb.org (result 127.0.0.2 = open relay)
8owps.dnsbl.net.au
8relays.bl.kundenserver.de
7dnsbl.ahbl.org (result 127.0.0.15 = open relay)
6blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
6bl.deadbeef.com
5pajo.blackholes.us
4burst.blackholes.us
4blackholes.uceb.org (result 127.0.0.6 = spam haven)
3lauderdale.blackholes.us
3ciberlynx.blackholes.us
3dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
2blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
2dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
1spamsites.dnsbl.net.au
1omrs.dnsbl.net.au
1dev.null.dk
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
1no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
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
33257(total number of IP addresses whose names were tested, including 482 at SDSC)
14131(union of all domain zones)
10652abuse.rfc-ignorant.org
7472rddn.dnsbl.net.au
4701whois.rfc-ignorant.org (union of all results)
2984whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1717whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
756rhsbl.ahbl.org
741bulk.rhs.mailpolice.com
332bl.deadbeef.com
33porn.rhs.mailpolice.com
23postmaster.rfc-ignorant.org
23dsn.rfc-ignorant.org (zone not intended for this use)
4blackhole.securitysage.com
1bogusmx.rfc-ignorant.org
1cart00ney.surriel.com

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

HitsDNS Zone
29372(total number of domains tested, including 288 at SDSC)
8991(union of all domain zones)
3594whois.rfc-ignorant.org (union of all results)
3142whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2547abuse.rfc-ignorant.org
1962bulk.rhs.mailpolice.com
1046rhsbl.ahbl.org
1043postmaster.rfc-ignorant.org
799dsn.rfc-ignorant.org
452whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
369blackhole.securitysage.com
299bogusmx.rfc-ignorant.org
241bl.deadbeef.com
91porn.rhs.mailpolice.com
73rddn.dnsbl.net.au (zone not intended for this use)
40rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
40rhsbl.sorbs.net (union of all results)
17ex.dnsbl.org
2cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 28 October 2004.