Blacklists Compared

30 October 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
32305(total number of IP addresses tested, including 496 at SDSC)
26846(union of most IP zones)
21085t1.dnsbl.net.au
17930blackholes.five-ten-sg.com (union of all results)
17164blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
14538sbl-xbl.spamhaus.org (union of all results)
14072dnsbl.sorbs.net (union of all results)
13512cbl.abuseat.org
13510xbl.spamhaus.org (union of all results)
13485xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
13485sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
9441dnsbl.sorbs.net (result 127.0.0.10 = dialup)
9094dynablock.njabl.org
8903unconfirmed.dsbl.org
8816list.dsbl.org
8813dsbl.dnsbl.net.au
8684no-more-funn.moensted.dk (union of all results)
7944cn-kr.blackholes.us (union of all results)
5741sbl.csma.biz
5400psbl.surriel.com
5259cn-kr.blackholes.us (result 127.0.0.3 = Korea)
5259korea.blackholes.us
5246korea.services.net
5185rmst.dnsbl.net.au
5048no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
4493combined-hib.dnsiplists.completewhois.com (union of all results)
4482combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
4158dnsbl.njabl.org (union of all results)
4130block.blars.org
3932blacklist.spambag.org
3483bl.csma.biz
3457bl.spamcop.net
2927l2.spews.dnsbl.sorbs.net
2800wpbl.dnsbl.net.au
2685cn-kr.blackholes.us (result 127.0.0.2 = China)
2685china.blackholes.us
2659dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2506spews.dnsbl.net.au
2480l1.spews.dnsbl.sorbs.net
2345dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2159dnsbl.ahbl.org (union of all results)
1962no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1949dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1936spamsources.fabel.dk
1789pdl.blackholes.us
1356dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1319ricn.dnsbl.net.au
1292spam.wytnij.to
1220sbl.spamhaus.org
1216sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1209unsure.nether.net
1176dnsbl.njabl.org (result 127.0.0.3 = dialup)
1073dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1014work.drbl.croco.net
987dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
982dnsbl.antispam.or.id
875bl.spamcannibal.org
874brazil.blackholes.us
814dnsbl.rangers.eu.org (union of all results)
744no-more-funn.moensted.dk (result 127.0.0.9 = misc)
735japan.blackholes.us
727level3.blackholes.us
707no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
703probes.dnsbl.net.au
694opm.blitzed.org
693xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
693sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
683dnsbl.ahbl.org (result 127.0.0.4 = spam source)
609comcast.blackholes.us
579taiwan.blackholes.us
578dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
563spamguard.leadmon.net (union of all results)
520spamguard.leadmon.net (result 127.0.0.2 = dialup)
478ybl.megacity.org
459blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
368charter.blackholes.us
360rr.blackholes.us
313mexico.blackholes.us
308cw.blackholes.us
273russia.blackholes.us
245no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
232qwest.blackholes.us
213blackholes.intersil.net
206hongkong.blackholes.us
205blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
187interbusiness.blackholes.us
175dnsbl.njabl.org (result 127.0.0.2 = source or relay)
165dnsbl.njabl.org (result 127.0.0.4 = spam source)
161argentina.blackholes.us
156ohps.dnsbl.net.au
145wanadoo-fr.blackholes.us
140dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
139verio.blackholes.us
138dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
129xo.blackholes.us
128query.bondedsender.org (not a blacklist!)
124flowgoaway.com
123turkey.blackholes.us
123tr.countries.nerd.dk
119dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
117relaywatcher.n13mbl.com
105singapore.blackholes.us
91malaysia.blackholes.us
90osps.dnsbl.net.au
82internap.blackholes.us
81multihop.dsbl.org
80dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
80relays.ordb.org
77thailand.blackholes.us
72dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
72dialup.blacklist.jippg.org (union of all results)
65above.blackholes.us
64relays.nether.net
61osrs.dnsbl.net.au
59cybercon.blackholes.us
56bellsouth.blackholes.us
56mail-abuse.blacklist.jippg.org
54ph.rbl.cluecentral.net
50he.blackholes.us
44telstra.blackholes.us
43spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
42infolink.blackholes.us
41inflow.blackholes.us
41blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
36covad.blackholes.us
35yipes.blackholes.us
35swbell.blackholes.us
34rogers.blackholes.us
31maxim.blackholes.us
31blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
30broadwing.blackholes.us
29dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
26blackholes.brainerd.net
24rdts.dnsbl.net.au
23a2000.blackholes.us
22blackholes.uceb.org (union of all results)
21nigeria.blackholes.us
20dnsbl.sorbs.net (result 127.0.0.5 = open relay)
20blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
17eli.blackholes.us
17hil.habeas.com
17exemptions.ahbl.org (not a blacklist!)
17dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
16rackspace.blackholes.us
15dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
12owps.dnsbl.net.au
11olm.blackholes.us
11navisite.blackholes.us
11blackholes.uceb.org (result 127.0.0.2 = open relay)
11relays.bl.kundenserver.de
11satos.rbl.cluecentral.net
10affinity.blackholes.us
10combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
9blackholes.uceb.org (result 127.0.0.3 = spam source)
9dnsbl.ahbl.org (result 127.0.0.15 = open relay)
8bl.deadbeef.com
7epoch.blackholes.us
7burst.blackholes.us
7blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
4pajo.blackholes.us
2blackholes.uceb.org (result 127.0.0.6 = spam haven)
2omrs.dnsbl.net.au
2no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1lauderdale.blackholes.us
1ciberlynx.blackholes.us
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1dev.null.dk
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1combined-hib.dnsiplists.completewhois.com (result 127.0.0.3 = hijacked network)
1dnsbl.ahbl.org (result 127.0.0.17 = worm 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
32305(total number of IP addresses whose names were tested, including 496 at SDSC)
13438(union of all domain zones)
10459abuse.rfc-ignorant.org
7440rddn.dnsbl.net.au
3907whois.rfc-ignorant.org (union of all results)
3010whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
897whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
527rhsbl.ahbl.org
511bulk.rhs.mailpolice.com
316bl.deadbeef.com
25postmaster.rfc-ignorant.org
21dsn.rfc-ignorant.org (zone not intended for this use)
18porn.rhs.mailpolice.com
5blackhole.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
26980(total number of domains tested, including 301 at SDSC)
7699(union of all domain zones)
3209whois.rfc-ignorant.org (union of all results)
2791whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2418abuse.rfc-ignorant.org
1153bulk.rhs.mailpolice.com
1059postmaster.rfc-ignorant.org
960rhsbl.ahbl.org
838dsn.rfc-ignorant.org
418whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
381blackhole.securitysage.com
332bogusmx.rfc-ignorant.org
245bl.deadbeef.com
82porn.rhs.mailpolice.com
65rddn.dnsbl.net.au (zone not intended for this use)
49rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
49rhsbl.sorbs.net (union of all results)
14ex.dnsbl.org
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 10 November 2004.