Blacklists Compared

24 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
28131(total number of IP addresses tested, including 346 at SDSC)
22778(union of most IP zones)
16652t1.dnsbl.net.au
13997blackholes.five-ten-sg.com (union of all results)
13956block.blars.org
13026blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
12512sbl-xbl.spamhaus.org (union of all results)
11878dnsbl.sorbs.net (union of all results)
11059xbl.spamhaus.org (union of all results)
11050cbl.abuseat.org
11036sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11031xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
8610dynablock.njabl.org
8439unconfirmed.dsbl.org
8391dnsbl.sorbs.net (result 127.0.0.10 = dialup)
8311dsbl.dnsbl.net.au
8305list.dsbl.org
6653no-more-funn.moensted.dk (union of all results)
4718sbl.csma.biz
4614dnsbl.njabl.org (union of all results)
4557cn-kr.blackholes.us (union of all results)
3747psbl.surriel.com
3703wpbl.dnsbl.net.au
3651ipwhois.rfc-ignorant.org
3371bl.spamcop.net
3152l2.spews.dnsbl.sorbs.net
2911no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
2907dnsbl.ahbl.org (union of all results)
2807spews.dnsbl.net.au
2801l1.spews.dnsbl.sorbs.net
2756cn-kr.blackholes.us (result 127.0.0.2 = China)
2756china.blackholes.us
2572dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2378spam.wytnij.to
2367blacklist.spambag.org
2266pdl.blackholes.us
2262rmst.dnsbl.net.au
2125no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
2124bl.csma.biz
1801cn-kr.blackholes.us (result 127.0.0.3 = Korea)
1801korea.blackholes.us
1758dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1723dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1694korea.services.net
1602sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1602sbl.spamhaus.org
1562dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1549dnsbl.njabl.org (result 127.0.0.3 = dialup)
1365spamsources.fabel.dk
1245unsure.nether.net
1143dnsbl.ahbl.org (result 127.0.0.4 = spam source)
1138comcast.blackholes.us
1005dnsbl.sorbs.net (result 127.0.0.6 = spam source)
959work.drbl.croco.net
866no-more-funn.moensted.dk (result 127.0.0.9 = misc)
853sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
852xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
843ybl.megacity.org
828opm.blitzed.org
763ricn.dnsbl.net.au
737spamguard.leadmon.net (union of all results)
706spamguard.leadmon.net (result 127.0.0.2 = dialup)
655relays.visi.com
640probes.dnsbl.net.au
630blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
596brazil.blackholes.us
548no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
541taiwan.blackholes.us
525level3.blackholes.us
522cw.blackholes.us
468japan.blackholes.us
454rr.blackholes.us
412dnsbl.njabl.org (result 127.0.0.4 = spam source)
382rbl.rangers.eu.org (union of all results)
330dnsbl.antispam.or.id
314charter.blackholes.us
268blackholes.intersil.net
266mexico.blackholes.us
245blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
242wanadoo-fr.blackholes.us
238russia.blackholes.us
222no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
218hongkong.blackholes.us
205infolink.blackholes.us
193tr.countries.nerd.dk
189turkey.blackholes.us
185dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
171ohps.dnsbl.net.au
169dialup.blacklist.jippg.org (union of all results)
168dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
159qwest.blackholes.us
152rbl.rangers.eu.org (result 127.0.0.4 = dialup)
1503y.spam.mrs.kithrup.com
143pss.spambusters.org.ar
141argentina.blackholes.us
139osps.dnsbl.net.au
137interbusiness.blackholes.us
134multihop.dsbl.org
132verio.blackholes.us
132relays.ordb.org
124flowgoaway.com
118dnsbl.sorbs.net (result 127.0.0.5 = open relay)
118dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
112dnsbl.njabl.org (result 127.0.0.2 = source or relay)
108rbl.rangers.eu.org (result 127.0.0.3 = spam haven)
100singapore.blackholes.us
98hil.habeas.com
92dun.dnsrbl.net
87internap.blackholes.us
82xo.blackholes.us
82osrs.dnsbl.net.au
79mail-abuse.blacklist.jippg.org
78ph.rbl.cluecentral.net
73bellsouth.blackholes.us
69malaysia.blackholes.us
58rbl.rangers.eu.org (result 127.0.0.2 = spam source)
57dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
55above.blackholes.us
54relays.nether.net
53thailand.blackholes.us
52rogers.blackholes.us
50sbbl.they.com
49telstra.blackholes.us
48he.blackholes.us
40cybercon.blackholes.us
39blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
37swbell.blackholes.us
37inflow.blackholes.us
37blackholes.brainerd.net
34broadwing.blackholes.us
34rdts.dnsbl.net.au
31rbl.rangers.eu.org (result 127.0.0.1 = misc)
30covad.blackholes.us
30rbl.rangers.eu.org (result 127.0.0.10 = virus notices)
30spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
29dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
27spamsources.yamta.org (result 127.0.0.2 = spam source)
26eli.blackholes.us
25a2000.blackholes.us
23nigeria.blackholes.us
23blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
22blackholes.uceb.org (union of all results)
19rackspace.blackholes.us
19exemptions.ahbl.org (not a blacklist!)
17yipes.blackholes.us
17satos.rbl.cluecentral.net
15blackholes.uceb.org (result 127.0.0.2 = open relay)
15query.bondedsender.org (not a blacklist!)
14blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
14blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
12olm.blackholes.us
12navisite.blackholes.us
10affinity.blackholes.us
10owps.dnsbl.net.au
10bl.deadbeef.com
9epoch.blackholes.us
8no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
7dnsbl.ahbl.org (result 127.0.0.15 = open relay)
6pajo.blackholes.us
6maxim.blackholes.us
6blackholes.uceb.org (result 127.0.0.3 = spam source)
5dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
4relays.bl.kundenserver.de
4blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
3burst.blackholes.us
3no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
2ciberlynx.blackholes.us
2rbl.rangers.eu.org (result 127.0.0.5 = relay output)
2spamsites.dnsbl.net.au
2omrs.dnsbl.net.au
2dev.null.dk
2blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
1rbl.rangers.eu.org (result 127.0.0.9 = worm source)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
1no-more-funn.moensted.dk (result 127.0.0.11 = repeated probes)
1dnsbl.ahbl.org (result 127.0.0.18 = virus source)
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
28131(total number of IP addresses whose names were tested, including 346 at SDSC)
13394(union of all domain zones)
9787abuse.rfc-ignorant.org
7962rddn.dnsbl.net.au
4065whois.rfc-ignorant.org (union of all results)
2638whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1427whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
833bulk.rhs.mailpolice.com
598rhsbl.ahbl.org
400blackhole.securitysage.com
293bl.deadbeef.com
57porn.rhs.mailpolice.com
18postmaster.rfc-ignorant.org
15dsn.rfc-ignorant.org (zone not intended for this use)
9bogusmx.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
24944(total number of domains tested, including 234 at SDSC)
8237(union of all domain zones)
3393whois.rfc-ignorant.org (union of all results)
2952whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2278abuse.rfc-ignorant.org
1872rhsbl.ahbl.org
1863bulk.rhs.mailpolice.com
978postmaster.rfc-ignorant.org
900blackhole.securitysage.com
846dsn.rfc-ignorant.org
441whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
335bogusmx.rfc-ignorant.org
151bl.deadbeef.com
74porn.rhs.mailpolice.com
52rddn.dnsbl.net.au (zone not intended for this use)
48ex.dnsbl.org (union of all results)
45ex.dnsbl.org (result 127.0.0.2 = spamsites)
29rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
29rhsbl.sorbs.net (union of all results)
3rhsbl.sorbs.net (result 127.0.0.12 = domain does not send mail)
3ex.dnsbl.org (result 127.0.0.3 = spam source)
2cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 17 May 2004.