Blacklists Compared

28 February 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
20925(total number of IP addresses tested, including 383 at SDSC)
16253(union of most IP zones)
11573t1.dnsbl.net.au
9628block.blars.org
9340dnsbl.sorbs.net (union of all results)
9189blackholes.five-ten-sg.com (union of all results)
8209sbl-xbl.spamhaus.org (union of all results)
8190blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
7311unconfirmed.dsbl.org
7164cbl.abuseat.org
7146xbl.spamhaus.org
7145sbl-xbl.spamhaus.org (result 127.0.0.4 = Spamhaus XBL)
7124list.dsbl.org
7123dsbl.dnsbl.net.au
6019dynablock.njabl.org
5888dnsbl.sorbs.net (result 127.0.0.10 = dialup)
4975dnsbl.njabl.org (union of all results)
4355no-more-funn.moensted.dk (union of all results)
3985sbl.csma.biz
3671bl.spamcop.net
3353dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3156cn-kr.blackholes.us (union of all results)
2827dnsbl.ahbl.org (union of all results)
2683l2.spews.dnsbl.sorbs.net
2499ipwhois.rfc-ignorant.org
2440psbl.surriel.com
2340spews.dnsbl.net.au
2331l1.spews.dnsbl.sorbs.net
2330spam.wytnij.to
2310no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
2249dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2205unsure.nether.net
1893dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1829bl.csma.biz
1806cn-kr.blackholes.us (result 127.0.0.2 = China)
1806china.blackholes.us
1730dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1722pdl.blackholes.us
1525no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1350cn-kr.blackholes.us (result 127.0.0.3 = Korea)
1350korea.blackholes.us
1331korea.services.net
1303rmst.dnsbl.net.au
1235sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1235sbl.spamhaus.org
1182spamsources.fabel.dk
1159wpbl.dnsbl.net.au
933dnsbl.njabl.org (result 127.0.0.3 = dialup)
878comcast.blackholes.us
780relays.visi.com
755dnsbl.sorbs.net (result 127.0.0.6 = spam source)
703blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
697ybl.megacity.org
634ricn.dnsbl.net.au
605opm.blitzed.org
573dnsbl.ahbl.org (result 127.0.0.4 = spam source)
536blacklist.spambag.org
518spamguard.leadmon.net (union of all results)
507spamguard.leadmon.net (result 127.0.0.2 = dialup)
490probes.dnsbl.net.au
471cw.blackholes.us
467dnsbl.njabl.org (result 127.0.0.4 = spam source)
434pss.spambusters.org.ar
384level3.blackholes.us
331work.drbl.croco.net
330blackholes.intersil.net
320brazil.blackholes.us
304rr.blackholes.us
300taiwan.blackholes.us
271dnsbl.antispam.or.id
267hil.habeas.com
260no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
240charter.blackholes.us
236dnsbl.njabl.org (result 127.0.0.2 = source or relay)
222no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
221blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
193japan.blackholes.us
176multihop.dsbl.org
163relays.ordb.org
155dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
150interbusiness.blackholes.us
149mexico.blackholes.us
147qwest.blackholes.us
147rbl.rangers.eu.org (union of all results)
1383y.spam.mrs.kithrup.com
127verio.blackholes.us
125wanadoo-fr.blackholes.us
122osps.dnsbl.net.au
117dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
113infolink.blackholes.us
112turkey.blackholes.us
112tr.countries.nerd.dk
108dialup.blacklist.jippg.org (union of all results)
107dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
101russia.blackholes.us
98hongkong.blackholes.us
92argentina.blackholes.us
91internap.blackholes.us
89mail-abuse.blacklist.jippg.org
86query.bondedsender.org (not a blacklist!)
81osrs.dnsbl.net.au
78xo.blackholes.us
78ohps.dnsbl.net.au
76flowgoaway.com
73no-more-funn.moensted.dk (result 127.0.0.9 = misc)
68relays.nether.net
68dun.dnsrbl.net
66sbbl.they.com
64he.blackholes.us
56bellsouth.blackholes.us
56dnsbl.sorbs.net (result 127.0.0.5 = open relay)
55dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
54rbl.rangers.eu.org (result 127.0.0.4 = dialup)
48covad.blackholes.us
47above.blackholes.us
45inflow.blackholes.us
42a2000.blackholes.us
41spam.exsilia.net (union of all results)
40telstra.blackholes.us
40singapore.blackholes.us
40rdts.dnsbl.net.au
39rbl.rangers.eu.org (result 127.0.0.2 = spam source)
37blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
36blackholes.brainerd.net
35cybercon.blackholes.us
35ph.rbl.cluecentral.net
31rogers.blackholes.us
31nigeria.blackholes.us
31broadwing.blackholes.us
31spam.exsilia.net (result 127.0.0.2 = spam source)
27blackholes.uceb.org (union of all results)
25swbell.blackholes.us
24rbl.rangers.eu.org (result 127.0.0.10 = virus notices)
22thailand.blackholes.us
22blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
21yipes.blackholes.us
21rackspace.blackholes.us
20malaysia.blackholes.us
20exemptions.ahbl.org (not a blacklist!)
17rbl.rangers.eu.org (result 127.0.0.3 = spam haven)
15eli.blackholes.us
14satos.rbl.cluecentral.net
12affinity.blackholes.us
12blackholes.uceb.org (result 127.0.0.2 = open relay)
11maxim.blackholes.us
11epoch.blackholes.us
10spamsources.yamta.org (result 127.0.0.2 = spam source)
10blackholes.uceb.org (result 127.0.0.3 = spam source)
10spam.exsilia.net (result 127.0.0.3 = virus source)
10bl.deadbeef.com
9owps.dnsbl.net.au
8olm.blackholes.us
8spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
8no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
8blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
7navisite.blackholes.us
6pajo.blackholes.us
5burst.blackholes.us
5rbl.rangers.eu.org (result 127.0.0.8 = source or relay)
5rbl.rangers.eu.org (result 127.0.0.1 = misc)
5blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
5dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
4blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
4relays.bl.kundenserver.de
3spamsites.dnsbl.net.au
3spamguard.leadmon.net (result 127.0.0.3 = spam source)
3no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
3spam.dnsrbl.net
2rbl.rangers.eu.org (result 127.0.0.5 = relay output)
2omrs.dnsbl.net.au
2blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1ciberlynx.blackholes.us
1blackholes.uceb.org (result 127.0.0.4 = spam source network)
1rbl.rangers.eu.org (result 127.0.0.9 = virus source)
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1dnsbl.ahbl.org (result 127.0.0.15 = 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
20925(total number of IP addresses whose names were tested, including 383 at SDSC)
9905(union of all domain zones)
6783abuse.rfc-ignorant.org
5691rddn.dnsbl.net.au
2762whois.rfc-ignorant.org (union of all results)
1943whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
820whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
723bulk.rhs.mailpolice.com
488rhsbl.ahbl.org
450blackhole.securitysage.com
199bl.deadbeef.com
54porn.rhs.mailpolice.com
25postmaster.rfc-ignorant.org
13dsn.rfc-ignorant.org (zone not intended for this use)
2bogusmx.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
14212(total number of domains tested, including 246 at SDSC)
4711(union of all domain zones)
1614whois.rfc-ignorant.org (union of all results)
1392bulk.rhs.mailpolice.com
1389abuse.rfc-ignorant.org
1329whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
827rhsbl.ahbl.org
777blackhole.securitysage.com
661postmaster.rfc-ignorant.org
603dsn.rfc-ignorant.org
285whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
146bogusmx.rfc-ignorant.org
74bl.deadbeef.com
67porn.rhs.mailpolice.com
16rddn.dnsbl.net.au (zone not intended for this use)
12rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
12rhsbl.sorbs.net (union of all results)
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 11 March 2004.