Blacklists Compared

4 December 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
30710(total number of IP addresses tested, including 420 at SDSC)
25416(union of most IP zones)
20230t1.dnsbl.net.au
17194blackholes.five-ten-sg.com (union of all results)
16414blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
14559dnsbl.sorbs.net (union of all results)
14154sbl-xbl.spamhaus.org (union of all results)
12863xbl.spamhaus.org (union of all results)
12858cbl.abuseat.org
12841xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
12840sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
9568dnsbl.sorbs.net (result 127.0.0.10 = dialup)
8789unconfirmed.dsbl.org
8697list.dsbl.org
8691dsbl.dnsbl.net.au
8389no-more-funn.moensted.dk (union of all results)
8243dynablock.njabl.org
8056cn-kr.blackholes.us (union of all results)
5947sbl.csma.biz
5539cn-kr.blackholes.us (result 127.0.0.3 = Korea)
5539korea.blackholes.us
5534korea.services.net
5360rmst.dnsbl.net.au
5272no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
4898combined-hib.dnsiplists.completewhois.com (union of all results)
4893combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
3879dnsbl.njabl.org (union of all results)
3788bl.csma.biz
3588blacklist.spambag.org
3546bl.spamcop.net
3543psbl.surriel.com
2858l2.spews.dnsbl.sorbs.net
2724wpbl.dnsbl.net.au
2649dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2517cn-kr.blackholes.us (result 127.0.0.2 = China)
2517china.blackholes.us
2496spews.dnsbl.net.au
2445l1.spews.dnsbl.sorbs.net
2412dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2288dnsbl.ahbl.org (union of all results)
2008spamsources.fabel.dk
1960dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1664pdl.blackholes.us
1641ricn.dnsbl.net.au
1576no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1568dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1546block.blars.org
1517sbl.spamhaus.org
1501sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1277dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1125spam.wytnij.to
1113dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1097unsure.nether.net
969brazil.blackholes.us
944bl.spamcannibal.org
887dnsbl.rangers.eu.org (union of all results)
875dnsbl.njabl.org (result 127.0.0.3 = dialup)
823work.drbl.croco.net
682xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
682opm.blitzed.org
681sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
680dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
658no-more-funn.moensted.dk (result 127.0.0.9 = misc)
650no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
648dnsbl.ahbl.org (result 127.0.0.4 = spam source)
613probes.dnsbl.net.au
610dnsbl.antispam.or.id
551japan.blackholes.us
534level3.blackholes.us
486ybl.megacity.org
454blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
438taiwan.blackholes.us
393comcast.blackholes.us
319cw.blackholes.us
317mexico.blackholes.us
312blackholes.intersil.net
261charter.blackholes.us
260no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
259rr.blackholes.us
226qwest.blackholes.us
226blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
217dnsbl.njabl.org (result 127.0.0.4 = spam source)
215argentina.blackholes.us
185russia.blackholes.us
182interbusiness.blackholes.us
176hongkong.blackholes.us
161spamguard.leadmon.net (union of all results)
160wanadoo-fr.blackholes.us
158spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
150dnsbl.njabl.org (result 127.0.0.2 = source or relay)
143query.bondedsender.org (not a blacklist!)
136tr.countries.nerd.dk
135verio.blackholes.us
133flowgoaway.com
128xo.blackholes.us
128singapore.blackholes.us
119ohps.dnsbl.net.au
118dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
116turkey.blackholes.us
104dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
94internap.blackholes.us
93above.blackholes.us
89osps.dnsbl.net.au
84dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
84relays.ordb.org
80multihop.dsbl.org
77malaysia.blackholes.us
76cybercon.blackholes.us
71dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
60thailand.blackholes.us
51dialup.blacklist.jippg.org (union of all results)
49dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
47he.blackholes.us
46dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
44bellsouth.blackholes.us
42blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
41inflow.blackholes.us
41osrs.dnsbl.net.au
40relays.nether.net
38relaywatcher.n13mbl.com
36a2000.blackholes.us
34rogers.blackholes.us
34mail-abuse.blacklist.jippg.org
33covad.blackholes.us
31yipes.blackholes.us
30blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
30ph.rbl.cluecentral.net
27nigeria.blackholes.us
24telstra.blackholes.us
24swbell.blackholes.us
24dnsbl.sorbs.net (result 127.0.0.5 = open relay)
22eli.blackholes.us
22blackholes.brainerd.net
22dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
22blackholes.uceb.org (union of all results)
21rackspace.blackholes.us
19blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
18dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
18rdts.dnsbl.net.au
16exemptions.ahbl.org (not a blacklist!)
14blackholes.uceb.org (result 127.0.0.3 = spam source)
13broadwing.blackholes.us
11dnsbl.ahbl.org (result 127.0.0.15 = open relay)
10affinity.blackholes.us
9epoch.blackholes.us
9hil.habeas.com
9bl.deadbeef.com
8olm.blackholes.us
8infolink.blackholes.us
8blackholes.uceb.org (result 127.0.0.2 = open relay)
8satos.rbl.cluecentral.net
7blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
6navisite.blackholes.us
6burst.blackholes.us
5pajo.blackholes.us
5maxim.blackholes.us
5owps.dnsbl.net.au
5combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
3omrs.dnsbl.net.au
3spamguard.leadmon.net (result 127.0.0.3 = spam source)
2spamsites.dnsbl.net.au
2dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1relays.bl.kundenserver.de
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
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
30710(total number of IP addresses whose names were tested, including 420 at SDSC)
12878(union of all domain zones)
9506abuse.rfc-ignorant.org
6816rddn.dnsbl.net.au
3739whois.rfc-ignorant.org (union of all results)
3738dynamic.rhs.mailpolice.com
2783whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1108webmail.rhs.mailpolice.com
956whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
543rhsbl.ahbl.org
371bulk.rhs.mailpolice.com
363adv.rhs.mailpolice.com
269bl.deadbeef.com
27postmaster.rfc-ignorant.org
18dsn.rfc-ignorant.org (zone not intended for this use)
5porn.rhs.mailpolice.com
2blackhole.securitysage.com
1bogusmx.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
27212(total number of domains tested, including 299 at SDSC)
8148(union of all domain zones)
3155whois.rfc-ignorant.org (union of all results)
2706whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2456abuse.rfc-ignorant.org
1107bulk.rhs.mailpolice.com
1089postmaster.rfc-ignorant.org
1000webmail.rhs.mailpolice.com
998rhsbl.ahbl.org
870dsn.rfc-ignorant.org
449whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
298blackhole.securitysage.com
288bogusmx.rfc-ignorant.org
247bl.deadbeef.com
231adv.rhs.mailpolice.com
68porn.rhs.mailpolice.com
56rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
56rhsbl.sorbs.net (union of all results)
52rddn.dnsbl.net.au (zone not intended for this use)
25dynamic.rhs.mailpolice.com
19ex.dnsbl.org
2cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 16 December 2004.