Blacklists Compared

12 February 2005

[ 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.

HitsDNS Zone
35057(total number of IP addresses tested, including 446 at SDSC)
29807(union of most IP zones)
24320t1.dnsbl.net.au
20983blackholes.five-ten-sg.com (union of all results)
20200blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
16426dnsbl.sorbs.net (union of all results)
12821sbl-xbl.spamhaus.org (union of all results)
12167cn-kr.blackholes.us (union of all results)
12052no-more-funn.moensted.dk (union of all results)
11513xbl.spamhaus.org (union of all results)
11508dnsbl.sorbs.net (result 127.0.0.10 = dialup)
10485cbl.abuseat.org
10484xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
10482sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
9745dynablock.njabl.org
9543unconfirmed.dsbl.org
9453list.dsbl.org
9452dsbl.dnsbl.net.au
9338cn-kr.blackholes.us (result 127.0.0.3 = Korea)
9338korea.blackholes.us
9331korea.services.net
8744no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
8123rmst.dnsbl.net.au
7092combined-hib.dnsiplists.completewhois.com (union of all results)
7068combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
6412sbl.csma.biz
5618psbl.surriel.com
5502ricn.dnsbl.net.au
4814dnsbl.njabl.org (union of all results)
4152bl.csma.biz
3833bl.spamcop.net
3752dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3209wpbl.dnsbl.net.au
3170dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
3070xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
3069sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
3045opm.blitzed.org
2829cn-kr.blackholes.us (result 127.0.0.2 = China)
2829china.blackholes.us
2800dnsbl.ahbl.org (union of all results)
2469blacklist.spambag.org
2348l2.spews.dnsbl.sorbs.net
2143dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2110spews.dnsbl.net.au
2040l1.spews.dnsbl.sorbs.net
2022spamsources.fabel.dk
1919spam.wytnij.to
1909dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1743pdl.blackholes.us
1721sbl.spamhaus.org
1705sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1595no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1562dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1494dnsbl.regedit64.net
1451dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1043bl.spamcannibal.org
1042unsure.nether.net
1041dnsbl.rangers.eu.org (union of all results)
984no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
934dnsbl.njabl.org (result 127.0.0.3 = dialup)
872dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
793brazil.blackholes.us
706dnsbl.antispam.or.id
697japan.blackholes.us
635probes.dnsbl.net.au
574dnsbl.ahbl.org (result 127.0.0.4 = spam source)
567level3.blackholes.us
529no-more-funn.moensted.dk (result 127.0.0.9 = misc)
475blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
437ybl.megacity.org
349comcast.blackholes.us
335taiwan.blackholes.us
315mexico.blackholes.us
295rr.blackholes.us
292charter.blackholes.us
285mail-abuse.blacklist.jippg.org
262cw.blackholes.us
258ohps.dnsbl.net.au
254argentina.blackholes.us
227blackholes.intersil.net
227blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
216russia.blackholes.us
213no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
198tr.countries.nerd.dk
196interbusiness.blackholes.us
194turkey.blackholes.us
194hongkong.blackholes.us
178qwest.blackholes.us
155query.bondedsender.org (not a blacklist!)
131wanadoo-fr.blackholes.us
130verio.blackholes.us
129flowgoaway.com
128xo.blackholes.us
121dialup.blacklist.jippg.org (union of all results)
119dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
108singapore.blackholes.us
108dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
104thailand.blackholes.us
101above.blackholes.us
94dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
90internap.blackholes.us
88osps.dnsbl.net.au
81dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
80relays.ordb.org
80multihop.dsbl.org
79dnsbl.njabl.org (result 127.0.0.2 = source or relay)
76malaysia.blackholes.us
70cybercon.blackholes.us
60dnsbl.njabl.org (result 127.0.0.4 = spam source)
58dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
58ph.rbl.cluecentral.net
49nigeria.blackholes.us
49bellsouth.blackholes.us
39covad.blackholes.us
37blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
36osrs.dnsbl.net.au
34he.blackholes.us
34relays.nether.net
32epoch.blackholes.us
31blackholes.uceb.org (union of all results)
30inflow.blackholes.us
28infolink.blackholes.us
28dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
27rdts.dnsbl.net.au
26telstra.blackholes.us
26blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
24combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
23eli.blackholes.us
22blackholes.uceb.org (result 127.0.0.3 = spam source)
21yipes.blackholes.us
19rogers.blackholes.us
17dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
17dnsbl.ahbl.org (result 127.0.0.15 = open relay)
17exemptions.ahbl.org (not a blacklist!)
16rackspace.blackholes.us
16burst.blackholes.us
16a2000.blackholes.us
15broadwing.blackholes.us
15blackholes.brainerd.net
13blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
12dnsbl.sorbs.net (result 127.0.0.5 = open relay)
12spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
12spamguard.leadmon.net (union of all results)
10maxim.blackholes.us
10affinity.blackholes.us
10dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
8swbell.blackholes.us
8olm.blackholes.us
8blackholes.uceb.org (result 127.0.0.2 = open relay)
8hil.habeas.com
8satos.rbl.cluecentral.net
7owps.dnsbl.net.au
5navisite.blackholes.us
5no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
5blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
4bl.deadbeef.com
3pajo.blackholes.us
3work.drbl.croco.net
2omrs.dnsbl.net.au
2dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
2dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
1ciberlynx.blackholes.us
1blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1owfs.dnsbl.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)

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
35057(total number of IP addresses whose names were tested, including 446 at SDSC)
13457(union of all domain zones)
9479abuse.rfc-ignorant.org
6668rddn.dnsbl.net.au
3553whois.rfc-ignorant.org (union of all results)
2985dynamic.rhs.mailpolice.com
2421whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1459webmail.rhs.mailpolice.com
1133whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
631bulk.rhs.mailpolice.com
438rhsbl.ahbl.org
381adv.rhs.mailpolice.com
220bl.deadbeef.com
21postmaster.rfc-ignorant.org
21dsn.rfc-ignorant.org (zone not intended for this use)
13porn.rhs.mailpolice.com
6fraud.rhs.mailpolice.com
3blackhole.securitysage.com
1bogusmx.rfc-ignorant.org

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

HitsDNS Zone
25206(total number of domains tested, including 318 at SDSC)
7117(union of all domain zones)
2700whois.rfc-ignorant.org (union of all results)
2421abuse.rfc-ignorant.org
2274whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1070postmaster.rfc-ignorant.org
1048webmail.rhs.mailpolice.com
927dsn.rfc-ignorant.org
717rhsbl.ahbl.org
708bulk.rhs.mailpolice.com
426whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
297bogusmx.rfc-ignorant.org
227blackhole.securitysage.com
191adv.rhs.mailpolice.com
171bl.deadbeef.com
110porn.rhs.mailpolice.com
77rddn.dnsbl.net.au (zone not intended for this use)
53rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
53rhsbl.sorbs.net (union of all results)
34dynamic.rhs.mailpolice.com
14ex.dnsbl.org
3fraud.rhs.mailpolice.com
3cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 26 February 2005.