Blacklists Compared

11 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
35409(total number of IP addresses tested, including 568 at SDSC)
30113(union of most IP zones)
24507t1.dnsbl.net.au
20833blackholes.five-ten-sg.com (union of all results)
19996blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
16818dnsbl.sorbs.net (union of all results)
14100sbl-xbl.spamhaus.org (union of all results)
12918xbl.spamhaus.org (union of all results)
12796sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
12788xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
12710cbl.abuseat.org
11358unconfirmed.dsbl.org
11244list.dsbl.org
11243dsbl.dnsbl.net.au
10980dnsbl.sorbs.net (result 127.0.0.10 = dialup)
10322no-more-funn.moensted.dk (union of all results)
10314cn-kr.blackholes.us (union of all results)
9417dynablock.njabl.org
7615cn-kr.blackholes.us (result 127.0.0.3 = Korea)
7615korea.blackholes.us
7609korea.services.net
7526sbl.csma.biz
6905rmst.dnsbl.net.au
6685no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
6019combined-hib.dnsiplists.completewhois.com (union of all results)
6005combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
5942psbl.surriel.com
4717bl.csma.biz
4630dnsbl.njabl.org (union of all results)
4373bl.spamcop.net
4104blacklist.spambag.org
3215dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
3212wpbl.dnsbl.net.au
3106dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2852l2.spews.dnsbl.sorbs.net
2761dnsbl.ahbl.org (union of all results)
2699cn-kr.blackholes.us (result 127.0.0.2 = China)
2699china.blackholes.us
2474spews.dnsbl.net.au
2394l1.spews.dnsbl.sorbs.net
2360spamsources.fabel.dk
2037ricn.dnsbl.net.au
2034dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1984dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1817pdl.blackholes.us
1754no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1565dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1400sbl.spamhaus.org
1369sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1304spam.wytnij.to
1301block.blars.org
1277unsure.nether.net
1249dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1022dnsbl.rangers.eu.org (union of all results)
985dnsbl.njabl.org (result 127.0.0.3 = dialup)
958brazil.blackholes.us
954no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
916bl.spamcannibal.org
915work.drbl.croco.net
910dnsbl.antispam.or.id
808dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
761probes.dnsbl.net.au
711no-more-funn.moensted.dk (result 127.0.0.9 = misc)
707dnsbl.ahbl.org (result 127.0.0.4 = spam source)
688japan.blackholes.us
638opm.blitzed.org
637xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
637sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
631level3.blackholes.us
509ybl.megacity.org
503taiwan.blackholes.us
473blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
416comcast.blackholes.us
352mexico.blackholes.us
324cw.blackholes.us
322charter.blackholes.us
322dnsbl.njabl.org (result 127.0.0.2 = source or relay)
295rr.blackholes.us
280blackholes.intersil.net
253blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
251interbusiness.blackholes.us
243argentina.blackholes.us
243no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
227hongkong.blackholes.us
225dnsbl.njabl.org (result 127.0.0.4 = spam source)
217russia.blackholes.us
214qwest.blackholes.us
167relays.ordb.org
162tr.countries.nerd.dk
159wanadoo-fr.blackholes.us
143spamguard.leadmon.net (union of all results)
142spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
133singapore.blackholes.us
132query.bondedsender.org (not a blacklist!)
130turkey.blackholes.us
127verio.blackholes.us
127ohps.dnsbl.net.au
124dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
123xo.blackholes.us
115flowgoaway.com
107dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
101multihop.dsbl.org
93above.blackholes.us
83internap.blackholes.us
83dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
81dialup.blacklist.jippg.org (union of all results)
80malaysia.blackholes.us
77dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
73cybercon.blackholes.us
70thailand.blackholes.us
70dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
65osps.dnsbl.net.au
64he.blackholes.us
61blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
56osrs.dnsbl.net.au
54bellsouth.blackholes.us
52relays.nether.net
51ph.rbl.cluecentral.net
46yipes.blackholes.us
46mail-abuse.blacklist.jippg.org
41dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
39inflow.blackholes.us
38telstra.blackholes.us
38nigeria.blackholes.us
32rogers.blackholes.us
31dnsbl.sorbs.net (result 127.0.0.5 = open relay)
27blackholes.uceb.org (union of all results)
25eli.blackholes.us
25covad.blackholes.us
25blackholes.brainerd.net
24rackspace.blackholes.us
24blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
23dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
22dnsbl.ahbl.org (result 127.0.0.15 = open relay)
21rdts.dnsbl.net.au
21dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
19a2000.blackholes.us
18exemptions.ahbl.org (not a blacklist!)
17swbell.blackholes.us
17blackholes.uceb.org (result 127.0.0.3 = spam source)
15navisite.blackholes.us
15blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
14combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
13epoch.blackholes.us
13hil.habeas.com
12broadwing.blackholes.us
12satos.rbl.cluecentral.net
9blackholes.uceb.org (result 127.0.0.2 = open relay)
8affinity.blackholes.us
7olm.blackholes.us
7maxim.blackholes.us
7blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
6pajo.blackholes.us
6owps.dnsbl.net.au
6bl.deadbeef.com
4burst.blackholes.us
4dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
3infolink.blackholes.us
3relaywatcher.n13mbl.com
3blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
2omrs.dnsbl.net.au
2dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1ciberlynx.blackholes.us
1blackholes.uceb.org (result 127.0.0.4 = spam source network)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1relays.bl.kundenserver.de
1no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)

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
35409(total number of IP addresses whose names were tested, including 568 at SDSC)
14550(union of all domain zones)
10807abuse.rfc-ignorant.org
7871rddn.dnsbl.net.au
4407whois.rfc-ignorant.org (union of all results)
3677dynamic.rhs.mailpolice.com
3285whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1380webmail.rhs.mailpolice.com
1122whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
563rhsbl.ahbl.org
443adv.rhs.mailpolice.com
382bulk.rhs.mailpolice.com
283bl.deadbeef.com
30postmaster.rfc-ignorant.org
19dsn.rfc-ignorant.org (zone not intended for this use)
5porn.rhs.mailpolice.com
4blackhole.securitysage.com
2bogusmx.rfc-ignorant.org
2cart00ney.surriel.com

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

HitsDNS Zone
29944(total number of domains tested, including 474 at SDSC)
8436(union of all domain zones)
3501whois.rfc-ignorant.org (union of all results)
3014whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2470abuse.rfc-ignorant.org
1058postmaster.rfc-ignorant.org
1032webmail.rhs.mailpolice.com
955bulk.rhs.mailpolice.com
926dsn.rfc-ignorant.org
860rhsbl.ahbl.org
487whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
283bogusmx.rfc-ignorant.org
278bl.deadbeef.com
270blackhole.securitysage.com
240adv.rhs.mailpolice.com
85rddn.dnsbl.net.au (zone not intended for this use)
79porn.rhs.mailpolice.com
49rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
49rhsbl.sorbs.net (union of all results)
37dynamic.rhs.mailpolice.com
23ex.dnsbl.org
4cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 24 December 2004.