Blacklists Compared

25 September 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
31561(total number of IP addresses tested, including 414 at SDSC)
26310(union of most IP zones)
20350t1.dnsbl.net.au
18381blackholes.five-ten-sg.com (union of all results)
17562blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
14081sbl-xbl.spamhaus.org (union of all results)
12907dnsbl.sorbs.net (union of all results)
12696xbl.spamhaus.org (union of all results)
12667cbl.abuseat.org
12659xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
12659sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
9466no-more-funn.moensted.dk (union of all results)
9025cn-kr.blackholes.us (union of all results)
8967unconfirmed.dsbl.org
8870list.dsbl.org
8868dsbl.dnsbl.net.au
8704dynablock.njabl.org
8440dnsbl.sorbs.net (result 127.0.0.10 = dialup)
6194cn-kr.blackholes.us (result 127.0.0.3 = Korea)
6194korea.blackholes.us
6187korea.services.net
5814no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5697ipwhois.rfc-ignorant.org
5350rmst.dnsbl.net.au
5325psbl.surriel.com
5255sbl.csma.biz
4834bl.spamcop.net
3813blacklist.spambag.org
3733dnsbl.njabl.org (union of all results)
3205wpbl.dnsbl.net.au
2832l2.spews.dnsbl.sorbs.net
2831cn-kr.blackholes.us (result 127.0.0.2 = China)
2831china.blackholes.us
2753dnsbl.ahbl.org (union of all results)
2666ricn.dnsbl.net.au
2453dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2436spews.dnsbl.net.au
2433l1.spews.dnsbl.sorbs.net
2155bl.csma.biz
2128spamsources.fabel.dk
1815dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1774dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1766no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1592pdl.blackholes.us
1525sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1525sbl.spamhaus.org
1519spam.wytnij.to
1424dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1352dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1309dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
973no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
935dnsbl.ahbl.org (result 127.0.0.4 = spam source)
934work.drbl.croco.net
926dnsbl.njabl.org (result 127.0.0.3 = dialup)
892probes.dnsbl.net.au
808xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
808sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
808opm.blitzed.org
765unsure.nether.net
764japan.blackholes.us
744brazil.blackholes.us
704no-more-funn.moensted.dk (result 127.0.0.9 = misc)
697dnsbl.rangers.eu.org (union of all results)
634taiwan.blackholes.us
586level3.blackholes.us
545ybl.megacity.org
498spamguard.leadmon.net (union of all results)
481comcast.blackholes.us
464blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
450spamguard.leadmon.net (result 127.0.0.2 = dialup)
441block.blars.org
412dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
359cw.blackholes.us
338charter.blackholes.us
337rr.blackholes.us
271blackholes.intersil.net
268mexico.blackholes.us
264relaywatcher.n13mbl.com
236no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
225blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
212russia.blackholes.us
207hongkong.blackholes.us
205qwest.blackholes.us
203dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
199dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
197ohps.dnsbl.net.au
185dnsbl.njabl.org (result 127.0.0.4 = spam source)
178dnsbl.njabl.org (result 127.0.0.2 = source or relay)
174interbusiness.blackholes.us
168dnsbl.antispam.or.id
140turkey.blackholes.us
140tr.countries.nerd.dk
137verio.blackholes.us
133wanadoo-fr.blackholes.us
133flowgoaway.com
132argentina.blackholes.us
119query.bondedsender.org (not a blacklist!)
110xo.blackholes.us
110osps.dnsbl.net.au
104internap.blackholes.us
98malaysia.blackholes.us
97infolink.blackholes.us
89singapore.blackholes.us
88relays.ordb.org
84multihop.dsbl.org
77blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
65dialup.blacklist.jippg.org (union of all results)
62dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
61dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
60ph.rbl.cluecentral.net
59above.blackholes.us
58thailand.blackholes.us
52cybercon.blackholes.us
51relays.nether.net
51mail-abuse.blacklist.jippg.org
46spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
45osrs.dnsbl.net.au
44bellsouth.blackholes.us
44dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
42he.blackholes.us
37inflow.blackholes.us
36covad.blackholes.us
35telstra.blackholes.us
35dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
35blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
33blackholes.uceb.org (union of all results)
32yipes.blackholes.us
32dnsbl.sorbs.net (result 127.0.0.5 = open relay)
30rogers.blackholes.us
30rdts.dnsbl.net.au
26blackholes.brainerd.net
24swbell.blackholes.us
24rackspace.blackholes.us
22nigeria.blackholes.us
21eli.blackholes.us
18a2000.blackholes.us
18dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
18exemptions.ahbl.org (not a blacklist!)
17hil.habeas.com
17dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
16broadwing.blackholes.us
14blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
13maxim.blackholes.us
13blackholes.uceb.org (result 127.0.0.6 = spam haven)
12blackholes.uceb.org (result 127.0.0.3 = spam source)
12satos.rbl.cluecentral.net
10olm.blackholes.us
10sbbl.they.com
9burst.blackholes.us
8pajo.blackholes.us
8navisite.blackholes.us
7affinity.blackholes.us
7blackholes.uceb.org (result 127.0.0.2 = open relay)
7owps.dnsbl.net.au
7bl.deadbeef.com
6dnsbl.ahbl.org (result 127.0.0.15 = open relay)
5epoch.blackholes.us
4relays.bl.kundenserver.de
3dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
3dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
3blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
2spamsites.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)
1blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
1omrs.dnsbl.net.au
1owfs.dnsbl.net.au
1no-more-funn.moensted.dk (result 127.0.0.11 = repeated probes)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
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
31561(total number of IP addresses whose names were tested, including 414 at SDSC)
12879(union of all domain zones)
9540abuse.rfc-ignorant.org
6813rddn.dnsbl.net.au
4496whois.rfc-ignorant.org (union of all results)
2813whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1683whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
808bulk.rhs.mailpolice.com
679rhsbl.ahbl.org
344bl.deadbeef.com
32porn.rhs.mailpolice.com
24postmaster.rfc-ignorant.org
19dsn.rfc-ignorant.org (zone not intended for this use)
4blackhole.securitysage.com
2bogusmx.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
28181(total number of domains tested, including 285 at SDSC)
11008(union of all domain zones)
6833whois.rfc-ignorant.org (union of all results)
6395whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2388abuse.rfc-ignorant.org
1157bulk.rhs.mailpolice.com
1133rhsbl.ahbl.org
1090postmaster.rfc-ignorant.org
841dsn.rfc-ignorant.org
438whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
321bogusmx.rfc-ignorant.org
314bl.deadbeef.com
148blackhole.securitysage.com
80porn.rhs.mailpolice.com
38rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
38rhsbl.sorbs.net (union of all results)
32rddn.dnsbl.net.au (zone not intended for this use)
19ex.dnsbl.org
3cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 6 October 2004.