Blacklists Compared

9 April 2005

[ 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.

HitsDNS Zone
33007(total number of IP addresses tested, including 423 at SDSC)
28028(union of most IP zones)
18709t1.dnsbl.net.au
18302blackholes.five-ten-sg.com (union of all results)
17525blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
14200dnsbl.sorbs.net (union of all results)
13846sbl-xbl.spamhaus.org (union of all results)
12187xbl.spamhaus.org (union of all results)
11336sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11333xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11329cbl.abuseat.org
9639dnsbl.sorbs.net (result 127.0.0.10 = dialup)
9455cn-kr.blackholes.us (union of all results)
8829no-more-funn.moensted.dk (union of all results)
7652dynablock.njabl.org
7623unconfirmed.dsbl.org
7553rmst.dnsbl.net.au
7537dsbl.dnsbl.net.au
7537list.dsbl.org
6409psbl.surriel.com
6032cn-kr.blackholes.us (result 127.0.0.3 = Korea)
6032korea.blackholes.us
6027korea.services.net
5787no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5300combined-hib.dnsiplists.completewhois.com (union of all results)
5277combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
5053sbl.csma.biz
4306bl.spamcop.net
3675blacklist.spambag.org
3617dnsbl.njabl.org (union of all results)
3537l2.spews.dnsbl.sorbs.net
3423cn-kr.blackholes.us (result 127.0.0.2 = China)
3423china.blackholes.us
3120l1.spews.dnsbl.sorbs.net
3049spews.dnsbl.net.au
3019xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
3017opm.blitzed.org
3016sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2891bl.csma.biz
2873dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2569dnsbl.ahbl.org (union of all results)
2562wpbl.dnsbl.net.au
2317dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2303sbl.spamhaus.org
2298sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
2054ricn.dnsbl.net.au
2017spamsources.fabel.dk
1878dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1805dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1695spam.wytnij.to
1563dnsbl.regedit64.net
1471no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1383dnsbl.rangers.eu.org (union of all results)
1363dnsbl.antispam.or.id
1282dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1229dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
1203dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1099unsure.nether.net
1051pdl.blackholes.us
1015bl.spamcannibal.org
992comcast.blackholes.us
980no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
898brazil.blackholes.us
717dnsbl.ahbl.org (result 127.0.0.4 = spam source)
632japan.blackholes.us
551probes.dnsbl.net.au
548dnsbl.njabl.org (result 127.0.0.3 = dialup)
465ybl.megacity.org
464xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
464sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
445blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
396russia.blackholes.us
388no-more-funn.moensted.dk (result 127.0.0.9 = misc)
376taiwan.blackholes.us
367level3.blackholes.us
349rr.blackholes.us
340mci.blackholes.us
296charter.blackholes.us
267cw.blackholes.us
255mexico.blackholes.us
242blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
229mail-abuse.blacklist.jippg.org
216argentina.blackholes.us
216no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
206tr.countries.nerd.dk
204turkey.blackholes.us
193blackholes.intersil.net
191interbusiness.blackholes.us
182query.bondedsender.org (not a blacklist!)
152dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
151qwest.blackholes.us
135hongkong.blackholes.us
132verio.blackholes.us
131ohps.dnsbl.net.au
120internap.blackholes.us
117thailand.blackholes.us
105dnsbl.njabl.org (result 127.0.0.2 = source or relay)
100dnsbl.njabl.org (result 127.0.0.4 = spam source)
97wanadoo-fr.blackholes.us
91singapore.blackholes.us
87above.blackholes.us
82xo.blackholes.us
82flowgoaway.com
80multihop.dsbl.org
76relays.ordb.org
69dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
69dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
68osps.dnsbl.net.au
67cybercon.blackholes.us
62yipes.blackholes.us
61malaysia.blackholes.us
45inflow.blackholes.us
45dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
41ph.rbl.cluecentral.net
40a2000.blackholes.us
40blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
39bellsouth.blackholes.us
33rogers.blackholes.us
33he.blackholes.us
33relays.nether.net
29lauderdale.blackholes.us
29covad.blackholes.us
28infolink.blackholes.us
27affinity.blackholes.us
26blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
25telstra.blackholes.us
23combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
20dnsbl.sorbs.net (result 127.0.0.5 = open relay)
19blackholes.uceb.org (union of all results)
18exemptions.ahbl.org (not a blacklist!)
16osrs.dnsbl.net.au
16spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
16dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
16spamguard.leadmon.net (union of all results)
16dialup.blacklist.jippg.org (union of all results)
15rackspace.blackholes.us
15nigeria.blackholes.us
15eli.blackholes.us
15dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
14dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
13blackholes.uceb.org (result 127.0.0.3 = spam source)
12blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
11epoch.blackholes.us
11hil.habeas.com
11blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
10burst.blackholes.us
10broadwing.blackholes.us
9satos.rbl.cluecentral.net
8swbell.blackholes.us
8blackholes.brainerd.net
7rdts.dnsbl.net.au
6maxim.blackholes.us
6blackholes.uceb.org (result 127.0.0.2 = open relay)
5olm.blackholes.us
5navisite.blackholes.us
4dnsbl.ahbl.org (result 127.0.0.15 = open relay)
3pajo.blackholes.us
3ciberlynx.blackholes.us
3owps.dnsbl.net.au
3no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
2omrs.dnsbl.net.au
2bl.deadbeef.com
2dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
1owfs.dnsbl.net.au
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
33007(total number of IP addresses whose names were tested, including 423 at SDSC)
14549(union of all domain zones)
11262abuse.rfc-ignorant.org
6153rddn.dnsbl.net.au
3609whois.rfc-ignorant.org (union of all results)
3035dynamic.rhs.mailpolice.com
2602whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1714webmail.rhs.mailpolice.com
1009whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
830rhsbl.ahbl.org
590bulk.rhs.mailpolice.com
348adv.rhs.mailpolice.com
207bl.deadbeef.com
16postmaster.rfc-ignorant.org
12dsn.rfc-ignorant.org (zone not intended for this use)
6porn.rhs.mailpolice.com
4blackhole.securitysage.com
2bogusmx.rfc-ignorant.org

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

HitsDNS Zone
21265(total number of domains tested, including 339 at SDSC)
5690(union of all domain zones)
1948whois.rfc-ignorant.org (union of all results)
1826abuse.rfc-ignorant.org
1599whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
918webmail.rhs.mailpolice.com
917postmaster.rfc-ignorant.org
854rhsbl.ahbl.org
727dsn.rfc-ignorant.org
562bulk.rhs.mailpolice.com
349whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
281bogusmx.rfc-ignorant.org
268blackhole.securitysage.com
182adv.rhs.mailpolice.com
132bl.deadbeef.com
111porn.rhs.mailpolice.com
48rddn.dnsbl.net.au (zone not intended for this use)
34rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
34rhsbl.sorbs.net (union of all results)
23dynamic.rhs.mailpolice.com
12ex.dnsbl.org
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 19 April 2005.