Blacklists Compared

1 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
26779(total number of IP addresses tested, including 249 at SDSC)
21105(union of most IP zones)
15011t1.dnsbl.net.au
13439block.blars.org
12830blackholes.five-ten-sg.com (union of all results)
11685blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
11139sbl-xbl.spamhaus.org (union of all results)
10564dnsbl.sorbs.net (union of all results)
9598xbl.spamhaus.org (union of all results)
9578cbl.abuseat.org
9576xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
9575sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
7439dynablock.njabl.org
7201unconfirmed.dsbl.org
7194dnsbl.sorbs.net (result 127.0.0.10 = dialup)
7041list.dsbl.org
7038dsbl.dnsbl.net.au
6165no-more-funn.moensted.dk (union of all results)
4482cn-kr.blackholes.us (union of all results)
4137sbl.csma.biz
3994dnsbl.njabl.org (union of all results)
3633ipwhois.rfc-ignorant.org
3466psbl.surriel.com
3177wpbl.dnsbl.net.au
3012l2.spews.dnsbl.sorbs.net
2842dnsbl.ahbl.org (union of all results)
2836no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
2804bl.spamcop.net
2719cn-kr.blackholes.us (result 127.0.0.2 = China)
2719china.blackholes.us
2645l1.spews.dnsbl.sorbs.net
2639spews.dnsbl.net.au
2357rmst.dnsbl.net.au
2253dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2113spam.wytnij.to
2107blacklist.spambag.org
1884pdl.blackholes.us
1856bl.csma.biz
1813no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1763cn-kr.blackholes.us (result 127.0.0.3 = Korea)
1763korea.blackholes.us
1708sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1708sbl.spamhaus.org
1673korea.services.net
1670dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1658dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1467dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1385spamsources.fabel.dk
1200dnsbl.njabl.org (result 127.0.0.3 = dialup)
1167dnsbl.ahbl.org (result 127.0.0.4 = spam source)
1080dnsbl.sorbs.net (result 127.0.0.6 = spam source)
958unsure.nether.net
945comcast.blackholes.us
905work.drbl.croco.net
898xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
898sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
895opm.blitzed.org
819ybl.megacity.org
814blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
719no-more-funn.moensted.dk (result 127.0.0.9 = misc)
690ricn.dnsbl.net.au
669brazil.blackholes.us
608spamguard.leadmon.net (union of all results)
601no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
569spamguard.leadmon.net (result 127.0.0.2 = dialup)
549relays.visi.com
500probes.dnsbl.net.au
499cw.blackholes.us
472level3.blackholes.us
458taiwan.blackholes.us
433dnsbl.njabl.org (result 127.0.0.4 = spam source)
393rr.blackholes.us
381japan.blackholes.us
381rbl.rangers.eu.org (union of all results)
308blackholes.intersil.net
290dnsbl.antispam.or.id
274charter.blackholes.us
255mexico.blackholes.us
240blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
226no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
219dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
210russia.blackholes.us
207hongkong.blackholes.us
188rbl.rangers.eu.org (result 127.0.0.4 = dialup)
188tr.countries.nerd.dk
184turkey.blackholes.us
182wanadoo-fr.blackholes.us
179ohps.dnsbl.net.au
1703y.spam.mrs.kithrup.com
165osps.dnsbl.net.au
156singapore.blackholes.us
156qwest.blackholes.us
148infolink.blackholes.us
142interbusiness.blackholes.us
141verio.blackholes.us
137multihop.dsbl.org
136argentina.blackholes.us
123dnsbl.njabl.org (result 127.0.0.2 = source or relay)
119internap.blackholes.us
116dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
115flowgoaway.com
109xo.blackholes.us
109relays.ordb.org
101ph.rbl.cluecentral.net
99dun.dnsrbl.net
94hil.habeas.com
90rbl.rangers.eu.org (result 127.0.0.3 = spam haven)
80dnsbl.sorbs.net (result 127.0.0.5 = open relay)
74malaysia.blackholes.us
74dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
74dialup.blacklist.jippg.org (union of all results)
73mail-abuse.blacklist.jippg.org
67dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
65thailand.blackholes.us
63relays.nether.net
61bellsouth.blackholes.us
61osrs.dnsbl.net.au
53telstra.blackholes.us
49rbl.rangers.eu.org (result 127.0.0.2 = spam source)
47he.blackholes.us
46sbbl.they.com
42inflow.blackholes.us
42cybercon.blackholes.us
42above.blackholes.us
41rogers.blackholes.us
39yipes.blackholes.us
39spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
38swbell.blackholes.us
33spamsources.yamta.org (result 127.0.0.2 = spam source)
31rbl.rangers.eu.org (result 127.0.0.1 = misc)
31rdts.dnsbl.net.au
31blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
31blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
30covad.blackholes.us
30blackholes.brainerd.net
27blackholes.uceb.org (union of all results)
24rackspace.blackholes.us
24nigeria.blackholes.us
24broadwing.blackholes.us
22rbl.rangers.eu.org (result 127.0.0.10 = virus notices)
21pss.spambusters.org.ar
20blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
20exemptions.ahbl.org (not a blacklist!)
20dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
17a2000.blackholes.us
16blackholes.uceb.org (result 127.0.0.2 = open relay)
15affinity.blackholes.us
15query.bondedsender.org (not a blacklist!)
14owps.dnsbl.net.au
13eli.blackholes.us
12olm.blackholes.us
12satos.rbl.cluecentral.net
12dnsbl.ahbl.org (result 127.0.0.15 = open relay)
11maxim.blackholes.us
10epoch.blackholes.us
10blackholes.uceb.org (result 127.0.0.3 = spam source)
8relays.bl.kundenserver.de
7bl.deadbeef.com
6pajo.blackholes.us
6navisite.blackholes.us
6blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
5burst.blackholes.us
5omrs.dnsbl.net.au
5no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
4dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
3dev.null.dk
2ciberlynx.blackholes.us
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1spamsources.yamta.org (result 127.0.0.3 = repeated probes)
1blackholes.uceb.org (result 127.0.0.4 = spam source network)
1rbl.rangers.eu.org (result 127.0.0.5 = relay output)
1spamsites.dnsbl.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1dnsbl.ahbl.org (result 127.0.0.18 = virus source)

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
26779(total number of IP addresses whose names were tested, including 249 at SDSC)
11995(union of all domain zones)
8611abuse.rfc-ignorant.org
6589rddn.dnsbl.net.au
3726whois.rfc-ignorant.org (union of all results)
2393whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1333whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
856bulk.rhs.mailpolice.com
593rhsbl.ahbl.org
381blackhole.securitysage.com
252bl.deadbeef.com
58porn.rhs.mailpolice.com
23postmaster.rfc-ignorant.org
21dsn.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
24203(total number of domains tested, including 300 at SDSC)
8004(union of all domain zones)
3332whois.rfc-ignorant.org (union of all results)
2869whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2320abuse.rfc-ignorant.org
1738bulk.rhs.mailpolice.com
1662rhsbl.ahbl.org
947postmaster.rfc-ignorant.org
835dsn.rfc-ignorant.org
735blackhole.securitysage.com
463whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
358bogusmx.rfc-ignorant.org
158bl.deadbeef.com
94porn.rhs.mailpolice.com
62rddn.dnsbl.net.au (zone not intended for this use)
40ex.dnsbl.org (union of all results)
37ex.dnsbl.org (result 127.0.0.2 = spamsites)
35rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
35rhsbl.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)
3cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 20 May 2004.