Blacklists Compared

18 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
15610(total number of IP addresses tested, including 462 at SDSC)
11627(union of most IP zones)
8690xbl.selwerd.cx
7781t1.bl.reynolds.net.au
5460blackholes.five-ten-sg.com (union of all results)
5298block.blars.org
4469blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
4218cbl.abuseat.org
3988dynablock.easynet.nl (result 127.0.0.2 = dialup)
3988wdl.bl.reynolds.net.au
3988dynablock.easynet.nl (union of all results)
3964unconfirmed.dsbl.org
3581list.dsbl.org
3579dsbl.bl.reynolds.net.au
3534no-more-funn.moensted.dk (union of all results)
3361dnsbl.sorbs.net (union of all results)
2848wpb.bl.reynolds.net.au
2846blackholes.easynet.nl
2827psbl.surriel.com
2673bl.spamcop.net
2412dnsbl.njabl.org (union of all results)
1910cn-kr.blackholes.us (union of all results)
1702proxies.blackholes.easynet.nl
1696no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
1465l2.spews.dnsbl.sorbs.net
1402ipwhois.rfc-ignorant.org
1232cn-kr.blackholes.us (result 127.0.0.2 = China)
1232china.blackholes.us
1219unsure.nether.net
1214no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1198dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1148bl.csma.biz
1012dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
994l1.spews.dnsbl.sorbs.net
994spews.bl.reynolds.net.au
983dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
982sbl.spamhaus.org
946pdl.bl.reynolds.net.au
862pss.spambusters.org.ar
785ricn.bl.reynolds.net.au
731spamsources.fabel.dk
716dialups.visi.com
678cn-kr.blackholes.us (result 127.0.0.3 = Korea)
678korea.blackholes.us
675blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
666korea.services.net
634ybl.megacity.org
617dnsbl.sorbs.net (result 127.0.0.10 = dialup)
615relays.visi.com
506cw.blackholes.us
494dnsbl.njabl.org (result 127.0.0.3 = dialup)
448blackholes.intersil.net
429opm.blitzed.org
426spam.wytnij.to
424dnsbl.njabl.org (result 127.0.0.4 = spam source)
417spamguard.leadmon.net (union of all results)
409rr.blackholes.us
399comcast.blackholes.us
399spamguard.leadmon.net (result 127.0.0.2 = dialup)
384blacklist.spambag.org
383work.drbl.croco.net
371dnsbl.sorbs.net (result 127.0.0.6 = spam source)
352rmst.bl.reynolds.net.au
350sbbl.they.com
344brazil.blackholes.us
310dnsbl.njabl.org (result 127.0.0.2 = source or relay)
295multihop.dsbl.org
285level3.blackholes.us
276no-more-funn.moensted.dk (result 127.0.0.9 = misc)
236no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
220blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
219taiwan.blackholes.us
196dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
189relays.ordb.org
188probes.bl.reynolds.net.au
174japan.blackholes.us
168dnsbl.antispam.or.id
1683y.spam.mrs.kithrup.com
167mail-abuse.blacklist.jippg.org
148charter.blackholes.us
140relays.bl.kundenserver.de
130qwest.blackholes.us
129verio.blackholes.us
128russia.blackholes.us
117query.bondedsender.org (not a blacklist!)
115ohps.bl.reynolds.net.au
112wanadoo-fr.blackholes.us
110xo.blackholes.us
104mexico.blackholes.us
104osrs.bl.reynolds.net.au
97relays.nether.net
94argentina.blackholes.us
92osps.bl.reynolds.net.au
92dialup.blacklist.jippg.org (union of all results)
91dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
89internap.blackholes.us
84blackholes.brainerd.net
83flowgoaway.com
82dun.dnsrbl.net
80blackholes.uceb.org (union of all results)
69interbusiness.blackholes.us
68no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
62hongkong.blackholes.us
56above.blackholes.us
52nigeria.blackholes.us
52rdts.bl.reynolds.net.au
50turkey.blackholes.us
46spam.shri.net
45singapore.blackholes.us
44bellsouth.blackholes.us
42inflow.blackholes.us
42blackholes.uceb.org (result 127.0.0.3 = spam source)
41he.blackholes.us
40blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
35spam.exsilia.net (union of all results)
34rogers.blackholes.us
34dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
33telstra.blackholes.us
33no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
28blackholes.uceb.org (result 127.0.0.2 = open relay)
28satos.rbl.cluecentral.net
27tr.countries.nerd.dk
25rackspace.blackholes.us
25cybercon.blackholes.us
22malaysia.blackholes.us
22bl.deadbeef.com
21covad.blackholes.us
21a2000.blackholes.us
21spam.exsilia.net (result 127.0.0.2 = spam source)
20blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
19lauderdale.blackholes.us
17blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
15spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
15ph.rbl.cluecentral.net
14thailand.blackholes.us
14dev.null.dk
14spam.exsilia.net (result 127.0.0.3 = virus source)
13blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
12vox.schpider.com
11affinity.blackholes.us
10yipes.blackholes.us
10pajo.blackholes.us
10broadwing.blackholes.us
9no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
8olm.blackholes.us
8eli.blackholes.us
6spamsources.yamta.org (result 127.0.0.2 = spam source)
6maxim.blackholes.us
6epoch.blackholes.us
6blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
5burst.blackholes.us
5owps.bl.reynolds.net.au
5blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
4blackholes.uceb.org (result 127.0.0.4 = spam source network)
4t3direct.bl.reynolds.net.au
3dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
3omrs.bl.reynolds.net.au
3spamguard.leadmon.net (result 127.0.0.3 = spam source)
2infolink.blackholes.us
2spamsites.bl.reynolds.net.au
2dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1navisite.blackholes.us
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1owfs.bl.reynolds.net.au
1dnsbl.njabl.org (result 127.0.0.5 = relay output)
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
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 127.0.0.11 = TCPA violator)
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
15610(total number of IP addresses whose names were tested, including 462 at SDSC)
6909(union of all domain zones)
4494abuse.rfc-ignorant.org
2975rddn.bl.reynolds.net.au
1276whois.rfc-ignorant.org (union of all results)
764whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
569endn.bl.reynolds.net.au
559spamdomains.blackholes.easynet.nl
512whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
480bulk.rhs.mailpolice.com
155blackhole.securitysage.com
134bl.deadbeef.com
46porn.rhs.mailpolice.com
13dsn.rfc-ignorant.org (zone not intended for this use)
11postmaster.rfc-ignorant.org

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

HitsDNS Zone
9163(total number of domains tested, including 325 at SDSC)
3254(union of all domain zones)
1118bulk.rhs.mailpolice.com
912abuse.rfc-ignorant.org
872whois.rfc-ignorant.org (union of all results)
783endn.bl.reynolds.net.au
764spamdomains.blackholes.easynet.nl
726whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
412postmaster.rfc-ignorant.org
380dsn.rfc-ignorant.org
171blackhole.securitysage.com
157rddn.bl.reynolds.net.au (zone not intended for this use)
146whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
59bl.deadbeef.com
54porn.rhs.mailpolice.com
36ex.dnsbl.org (union of all results)
30ex.dnsbl.org (result 127.0.0.2 = spamsites)
6ex.dnsbl.org (result 127.0.0.3 = spam source)
1rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
1rhsbl.sorbs.net (union of all results)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 26 October 2003.