Blacklists Compared

11 October 2003

[ 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 query.bondedsender.org zone because it is not a blacklist, and because they are too aggressive to be widely useful the xbl.selwerd.cx and block.blars.org zones are also excluded.

HitsDNS Zone
16063(total number of IP addresses tested, including 458 at SDSC)
11946(union of most IP zones)
9007xbl.selwerd.cx
8022t1.bl.reynolds.net.au
5476blackholes.five-ten-sg.com (union of all results)
5404block.blars.org
4471blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
4452cbl.abuseat.org
4404unconfirmed.dsbl.org
4318psbl.surriel.com
4141wdl.bl.reynolds.net.au
4137dynablock.easynet.nl (result 127.0.0.2 = dialup)
4137dynablock.easynet.nl (union of all results)
4063dsbl.bl.reynolds.net.au
4063list.dsbl.org
3783dnsbl.sorbs.net (union of all results)
3505no-more-funn.moensted.dk (union of all results)
2987wpb.bl.reynolds.net.au
2944blackholes.easynet.nl
2913bl.spamcop.net
2813dnsbl.njabl.org (union of all results)
1873proxies.blackholes.easynet.nl
1784cn-kr.blackholes.us (union of all results)
1689l2.spews.dnsbl.sorbs.net
1622no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
1529dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1298no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1292dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1260unsure.nether.net
1244dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1243ipwhois.rfc-ignorant.org
1170spews.bl.reynolds.net.au
1169l1.spews.dnsbl.sorbs.net
1030cn-kr.blackholes.us (result 127.0.0.2 = China)
1030china.blackholes.us
970pdl.bl.reynolds.net.au
957sbl.spamhaus.org
754cn-kr.blackholes.us (result 127.0.0.3 = Korea)
754korea.blackholes.us
744korea.services.net
731bl.csma.biz
724pss.spambusters.org.ar
716dnsbl.sorbs.net (result 127.0.0.10 = dialup)
658blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
627ricn.bl.reynolds.net.au
615ybl.megacity.org
577relays.visi.com
561dnsbl.njabl.org (result 127.0.0.3 = dialup)
509cw.blackholes.us
494spamsources.fabel.dk
444blacklist.spambag.org
423dnsbl.njabl.org (result 127.0.0.4 = spam source)
422spam.wytnij.to
418dialups.visi.com
417spamguard.leadmon.net (union of all results)
415blackholes.intersil.net
414brazil.blackholes.us
411work.drbl.croco.net
403spamguard.leadmon.net (result 127.0.0.2 = dialup)
399comcast.blackholes.us
391opm.blitzed.org
386rmst.bl.reynolds.net.au
382rr.blackholes.us
381dnsbl.sorbs.net (result 127.0.0.6 = spam source)
330sbbl.they.com
303dnsbl.njabl.org (result 127.0.0.2 = source or relay)
272level3.blackholes.us
272multihop.dsbl.org
249argentina.blackholes.us
238blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
230no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
224no-more-funn.moensted.dk (result 127.0.0.9 = misc)
208taiwan.blackholes.us
202dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
176relays.ordb.org
162japan.blackholes.us
150probes.bl.reynolds.net.au
150mail-abuse.blacklist.jippg.org
148charter.blackholes.us
1463y.spam.mrs.kithrup.com
145dnsbl.antispam.or.id
140russia.blackholes.us
138qwest.blackholes.us
133xo.blackholes.us
128verio.blackholes.us
128query.bondedsender.org (not a blacklist!)
126relays.bl.kundenserver.de
111mexico.blackholes.us
103osrs.bl.reynolds.net.au
99ohps.bl.reynolds.net.au
96dialup.blacklist.jippg.org (union of all results)
95dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
94relays.nether.net
92wanadoo-fr.blackholes.us
89no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
87spam.shri.net
87flowgoaway.com
86blackholes.brainerd.net
84internap.blackholes.us
84interbusiness.blackholes.us
78osps.bl.reynolds.net.au
69dun.dnsrbl.net
67blackholes.uceb.org (union of all results)
65hongkong.blackholes.us
58bellsouth.blackholes.us
55nigeria.blackholes.us
55above.blackholes.us
52turkey.blackholes.us
52tr.countries.nerd.dk
48rdts.bl.reynolds.net.au
43infolink.blackholes.us
41blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
39he.blackholes.us
37spam.exsilia.net (union of all results)
36a2000.blackholes.us
35telstra.blackholes.us
34singapore.blackholes.us
33blackholes.uceb.org (result 127.0.0.3 = spam source)
32rogers.blackholes.us
32inflow.blackholes.us
30blackholes.uceb.org (result 127.0.0.2 = open relay)
26no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
25ph.rbl.cluecentral.net
24malaysia.blackholes.us
24bl.deadbeef.com
24satos.rbl.cluecentral.net
23rackspace.blackholes.us
23covad.blackholes.us
23dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
23blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
21blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
21spam.exsilia.net (result 127.0.0.2 = spam source)
19cybercon.blackholes.us
19blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
17eli.blackholes.us
16thailand.blackholes.us
16spam.exsilia.net (result 127.0.0.3 = virus source)
13pajo.blackholes.us
13spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
12yipes.blackholes.us
11broadwing.blackholes.us
10affinity.blackholes.us
8lauderdale.blackholes.us
8dev.null.dk
8no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
7epoch.blackholes.us
7no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
6spamsources.yamta.org (result 127.0.0.2 = spam source)
6olm.blackholes.us
6burst.blackholes.us
6dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
5maxim.blackholes.us
5omrs.bl.reynolds.net.au
5blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
3blackholes.uceb.org (result 127.0.0.4 = spam source network)
3owps.bl.reynolds.net.au
3t3direct.bl.reynolds.net.au
2navisite.blackholes.us
1valuenet.blackholes.us
1blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1spamsites.bl.reynolds.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
1no-more-funn.moensted.dk (result 127.0.0.11 = repeated probes)
1spam.dnsrbl.net

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
16063(total number of IP addresses whose names were tested, including 458 at SDSC)
7057(union of all domain zones)
4612abuse.rfc-ignorant.org
3043rddn.bl.reynolds.net.au
1435whois.rfc-ignorant.org (union of all results)
887whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
548whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
515bulk.rhs.mailpolice.com
491endn.bl.reynolds.net.au
489spamdomains.blackholes.easynet.nl
174blackhole.securitysage.com
152bl.deadbeef.com
81porn.rhs.mailpolice.com
26dsn.rfc-ignorant.org (zone not intended for this use)
15postmaster.rfc-ignorant.org

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

HitsDNS Zone
9519(total number of domains tested, including 340 at SDSC)
3426(union of all domain zones)
1010abuse.rfc-ignorant.org
1002whois.rfc-ignorant.org (union of all results)
994bulk.rhs.mailpolice.com
857whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
693endn.bl.reynolds.net.au
672spamdomains.blackholes.easynet.nl
409postmaster.rfc-ignorant.org
381dsn.rfc-ignorant.org
300rddn.bl.reynolds.net.au (zone not intended for this use)
146blackhole.securitysage.com
145whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
62bl.deadbeef.com
55porn.rhs.mailpolice.com
36ex.dnsbl.org (union of all results)
33ex.dnsbl.org (result 127.0.0.2 = spamsites)
4rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
4rhsbl.sorbs.net (union of all results)
3ex.dnsbl.org (result 127.0.0.3 = spam source)
1rhsbl.sorbs.net (result 127.0.0.12 = domain does not send mail)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 20 October 2003.