Blacklists Compared

26 March 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
37693(total number of IP addresses tested, including 590 at SDSC)
32549(union of most IP zones)
22469t1.dnsbl.net.au
22224blackholes.five-ten-sg.com (union of all results)
21474blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
16516dnsbl.sorbs.net (union of all results)
15824sbl-xbl.spamhaus.org (union of all results)
14209xbl.spamhaus.org (union of all results)
13096sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
13094xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
13081cbl.abuseat.org
12131cn-kr.blackholes.us (union of all results)
11433dnsbl.sorbs.net (result 127.0.0.10 = dialup)
11000no-more-funn.moensted.dk (union of all results)
9595unconfirmed.dsbl.org
9517list.dsbl.org
9514dsbl.dnsbl.net.au
9195dynablock.njabl.org
8920rmst.dnsbl.net.au
8106cn-kr.blackholes.us (result 127.0.0.3 = Korea)
8106korea.blackholes.us
8102korea.services.net
7359no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
7142sbl.csma.biz
7069psbl.surriel.com
6741combined-hib.dnsiplists.completewhois.com (union of all results)
6724combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
4607bl.spamcop.net
4583dnsbl.njabl.org (union of all results)
4165bl.csma.biz
4025cn-kr.blackholes.us (result 127.0.0.2 = China)
4025china.blackholes.us
3930blacklist.spambag.org
3723dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3490l2.spews.dnsbl.sorbs.net
3175xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
3174sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
3171opm.blitzed.org
3130dnsbl.ahbl.org (union of all results)
3123wpbl.dnsbl.net.au
3097spews.dnsbl.net.au
3024l1.spews.dnsbl.sorbs.net
2647dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2508ricn.dnsbl.net.au
2456spamsources.fabel.dk
2436sbl.spamhaus.org
2435sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
2360dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1965dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1878dnsbl.regedit64.net
1775spam.wytnij.to
1647no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1585dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1483dnsbl.antispam.or.id
1463dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1387no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1281pdl.blackholes.us
1237dnsbl.rangers.eu.org (union of all results)
1061unsure.nether.net
1059brazil.blackholes.us
1058dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
995bl.spamcannibal.org
907comcast.blackholes.us
821japan.blackholes.us
733dnsbl.ahbl.org (result 127.0.0.4 = spam source)
667probes.dnsbl.net.au
629dnsbl.njabl.org (result 127.0.0.3 = dialup)
468rr.blackholes.us
444blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
437russia.blackholes.us
424ybl.megacity.org
421no-more-funn.moensted.dk (result 127.0.0.9 = misc)
417taiwan.blackholes.us
411level3.blackholes.us
324charter.blackholes.us
277argentina.blackholes.us
244tr.countries.nerd.dk
242cw.blackholes.us
241turkey.blackholes.us
222mexico.blackholes.us
217hongkong.blackholes.us
214interbusiness.blackholes.us
214blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
202mail-abuse.blacklist.jippg.org
201no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
183singapore.blackholes.us
181qwest.blackholes.us
172blackholes.intersil.net
158query.bondedsender.org (not a blacklist!)
151ohps.dnsbl.net.au
144dnsbl.njabl.org (result 127.0.0.2 = source or relay)
140dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
135verio.blackholes.us
129thailand.blackholes.us
115above.blackholes.us
112wanadoo-fr.blackholes.us
112dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
99malaysia.blackholes.us
98relays.ordb.org
94dnsbl.njabl.org (result 127.0.0.4 = spam source)
93xo.blackholes.us
88internap.blackholes.us
78osps.dnsbl.net.au
72multihop.dsbl.org
71flowgoaway.com
65cybercon.blackholes.us
55dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
51a2000.blackholes.us
45blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
43relays.nether.net
40ph.rbl.cluecentral.net
39he.blackholes.us
36nigeria.blackholes.us
35lauderdale.blackholes.us
35bellsouth.blackholes.us
34dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
32yipes.blackholes.us
32telstra.blackholes.us
32rogers.blackholes.us
32covad.blackholes.us
31dialup.blacklist.jippg.org (union of all results)
30inflow.blackholes.us
30dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
29osrs.dnsbl.net.au
26eli.blackholes.us
26blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
22maxim.blackholes.us
22infolink.blackholes.us
22dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
17dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
17dnsbl.sorbs.net (result 127.0.0.5 = open relay)
17hil.habeas.com
17combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
16exemptions.ahbl.org (not a blacklist!)
16blackholes.uceb.org (union of all results)
16spamguard.leadmon.net (union of all results)
15rackspace.blackholes.us
14spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
14blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
11swbell.blackholes.us
11burst.blackholes.us
11dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
11rdts.dnsbl.net.au
10olm.blackholes.us
10navisite.blackholes.us
10blackholes.uceb.org (result 127.0.0.3 = spam source)
10blackholes.brainerd.net
9affinity.blackholes.us
9satos.rbl.cluecentral.net
8epoch.blackholes.us
7owps.dnsbl.net.au
6blackholes.uceb.org (result 127.0.0.2 = open relay)
6blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
6dnsbl.ahbl.org (result 127.0.0.15 = open relay)
5broadwing.blackholes.us
3ciberlynx.blackholes.us
3bl.deadbeef.com
2pajo.blackholes.us
2dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
2omrs.dnsbl.net.au
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
2no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1media3.blackholes.us
1owfs.dnsbl.net.au
1dev.null.dk
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)
1dnsbl.ahbl.org (result 127.0.0.18 = virus source)
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)

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
37693(total number of IP addresses whose names were tested, including 590 at SDSC)
15693(union of all domain zones)
12268abuse.rfc-ignorant.org
7512rddn.dnsbl.net.au
4041whois.rfc-ignorant.org (union of all results)
3362dynamic.rhs.mailpolice.com
2966whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1670webmail.rhs.mailpolice.com
1075whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
771rhsbl.ahbl.org
445bulk.rhs.mailpolice.com
330adv.rhs.mailpolice.com
231bl.deadbeef.com
19postmaster.rfc-ignorant.org
12dsn.rfc-ignorant.org (zone not intended for this use)
9porn.rhs.mailpolice.com
3bogusmx.rfc-ignorant.org

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

HitsDNS Zone
24049(total number of domains tested, including 508 at SDSC)
6083(union of all domain zones)
2227whois.rfc-ignorant.org (union of all results)
1951abuse.rfc-ignorant.org
1826whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
941postmaster.rfc-ignorant.org
926webmail.rhs.mailpolice.com
925rhsbl.ahbl.org
698dsn.rfc-ignorant.org
670bulk.rhs.mailpolice.com
401whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
283bogusmx.rfc-ignorant.org
196blackhole.securitysage.com
173adv.rhs.mailpolice.com
120bl.deadbeef.com
100porn.rhs.mailpolice.com
86rddn.dnsbl.net.au (zone not intended for this use)
43dynamic.rhs.mailpolice.com
37rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
37rhsbl.sorbs.net (union of all results)
10ex.dnsbl.org
2fraud.rhs.mailpolice.com
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 8 April 2005.