Blacklists Compared

15 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
27478(total number of IP addresses tested, including 420 at SDSC)
22036(union of most IP zones)
15926t1.dnsbl.net.au
14189block.blars.org
13917blackholes.five-ten-sg.com (union of all results)
12923blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
12064sbl-xbl.spamhaus.org (union of all results)
11620dnsbl.sorbs.net (union of all results)
10270xbl.spamhaus.org (union of all results)
10250cbl.abuseat.org
10239xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
10239sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
8234dynablock.njabl.org
7835unconfirmed.dsbl.org
7773dnsbl.sorbs.net (result 127.0.0.10 = dialup)
7707list.dsbl.org
7703dsbl.dnsbl.net.au
6539no-more-funn.moensted.dk (union of all results)
4670cn-kr.blackholes.us (union of all results)
4555sbl.csma.biz
4327dnsbl.njabl.org (union of all results)
4066psbl.surriel.com
3815wpbl.dnsbl.net.au
3782l2.spews.dnsbl.sorbs.net
3753bl.spamcop.net
3643ipwhois.rfc-ignorant.org
3456l1.spews.dnsbl.sorbs.net
3446spews.dnsbl.net.au
3163dnsbl.ahbl.org (union of all results)
2867no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
2729cn-kr.blackholes.us (result 127.0.0.2 = China)
2729china.blackholes.us
2565rmst.dnsbl.net.au
2331blacklist.spambag.org
2273dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2042pdl.blackholes.us
1953sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1953sbl.spamhaus.org
1950no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1941cn-kr.blackholes.us (result 127.0.0.3 = Korea)
1941korea.blackholes.us
1933spam.wytnij.to
1859korea.services.net
1758dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1711dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1686bl.csma.biz
1445dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1405spamsources.fabel.dk
1400dnsbl.ahbl.org (result 127.0.0.4 = spam source)
1323dnsbl.njabl.org (result 127.0.0.3 = dialup)
1280dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1141comcast.blackholes.us
1092work.drbl.croco.net
988xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
988sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
980opm.blitzed.org
803relays.visi.com
790brazil.blackholes.us
765no-more-funn.moensted.dk (result 127.0.0.9 = misc)
741spamguard.leadmon.net (union of all results)
732unsure.nether.net
728no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
701ybl.megacity.org
687ricn.dnsbl.net.au
681probes.dnsbl.net.au
663blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
641spamguard.leadmon.net (result 127.0.0.2 = dialup)
561dnsbl.njabl.org (result 127.0.0.4 = spam source)
488rr.blackholes.us
477level3.blackholes.us
459cw.blackholes.us
445japan.blackholes.us
424dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
381blackholes.intersil.net
380rbl.rangers.eu.org (union of all results)
372taiwan.blackholes.us
372dnsbl.antispam.or.id
293charter.blackholes.us
257no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
253blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
243mexico.blackholes.us
203sbbl.they.com
202russia.blackholes.us
195rbl.rangers.eu.org (result 127.0.0.4 = dialup)
190dnsbl.njabl.org (result 127.0.0.2 = source or relay)
187relays.ordb.org
170qwest.blackholes.us
168tr.countries.nerd.dk
167hongkong.blackholes.us
166turkey.blackholes.us
166infolink.blackholes.us
1563y.spam.mrs.kithrup.com
153wanadoo-fr.blackholes.us
144singapore.blackholes.us
142verio.blackholes.us
141interbusiness.blackholes.us
139osps.dnsbl.net.au
136argentina.blackholes.us
130ohps.dnsbl.net.au
129dnsbl.sorbs.net (result 127.0.0.5 = open relay)
122dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
121multihop.dsbl.org
119flowgoaway.com
114hil.habeas.com
100spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
96malaysia.blackholes.us
94internap.blackholes.us
93dialup.blacklist.jippg.org (union of all results)
92dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
85rbl.rangers.eu.org (result 127.0.0.3 = spam haven)
80dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
77ph.rbl.cluecentral.net
76thailand.blackholes.us
72osrs.dnsbl.net.au
71mail-abuse.blacklist.jippg.org
70xo.blackholes.us
68relays.nether.net
67he.blackholes.us
59spamsources.yamta.org (result 127.0.0.2 = spam source)
53telstra.blackholes.us
52bellsouth.blackholes.us
52rbl.rangers.eu.org (result 127.0.0.2 = spam source)
52dun.dnsrbl.net
50above.blackholes.us
48pss.spambusters.org.ar
47inflow.blackholes.us
45rogers.blackholes.us
44swbell.blackholes.us
38blackholes.brainerd.net
37cybercon.blackholes.us
33rdts.dnsbl.net.au
31blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
29covad.blackholes.us
28nigeria.blackholes.us
28exemptions.ahbl.org (not a blacklist!)
25a2000.blackholes.us
23blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
23blackholes.uceb.org (union of all results)
22yipes.blackholes.us
22rbl.rangers.eu.org (result 127.0.0.1 = misc)
22rbl.rangers.eu.org (result 127.0.0.10 = virus notices)
18rackspace.blackholes.us
18satos.rbl.cluecentral.net
14blackholes.uceb.org (result 127.0.0.3 = spam source)
14blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
14query.bondedsender.org (not a blacklist!)
13broadwing.blackholes.us
13dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
12eli.blackholes.us
12affinity.blackholes.us
11relays.bl.kundenserver.de
10owps.dnsbl.net.au
9olm.blackholes.us
9epoch.blackholes.us
8blackholes.uceb.org (result 127.0.0.2 = open relay)
8blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
7pajo.blackholes.us
7burst.blackholes.us
6maxim.blackholes.us
6no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
6bl.deadbeef.com
4navisite.blackholes.us
4dnsbl.ahbl.org (result 127.0.0.15 = open relay)
4dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
3omrs.dnsbl.net.au
3dev.null.dk
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)
2spam.dnsrbl.net
1blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
1spamsites.dnsbl.net.au
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
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)

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
27478(total number of IP addresses whose names were tested, including 420 at SDSC)
12814(union of all domain zones)
9035abuse.rfc-ignorant.org
7302rddn.dnsbl.net.au
3928whois.rfc-ignorant.org (union of all results)
2629whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1300whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1119bulk.rhs.mailpolice.com
815rhsbl.ahbl.org
492blackhole.securitysage.com
229bl.deadbeef.com
49porn.rhs.mailpolice.com
21postmaster.rfc-ignorant.org
18dsn.rfc-ignorant.org (zone not intended for this use)
3bogusmx.rfc-ignorant.org

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

HitsDNS Zone
22545(total number of domains tested, including 487 at SDSC)
7440(union of all domain zones)
3161whois.rfc-ignorant.org (union of all results)
2698whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2135abuse.rfc-ignorant.org
1702bulk.rhs.mailpolice.com
1280rhsbl.ahbl.org
913postmaster.rfc-ignorant.org
776dsn.rfc-ignorant.org
669blackhole.securitysage.com
463whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
293bogusmx.rfc-ignorant.org
148bl.deadbeef.com
79rddn.dnsbl.net.au (zone not intended for this use)
64porn.rhs.mailpolice.com
52ex.dnsbl.org (union of all results)
48ex.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)
4ex.dnsbl.org (result 127.0.0.3 = spam source)
3cart00ney.surriel.com
2rhsbl.sorbs.net (result 127.0.0.12 = domain does not send mail)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 31 May 2004.