Blacklists Compared

12 June 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
26795(total number of IP addresses tested, including 408 at SDSC)
21645(union of most IP zones)
15723t1.dnsbl.net.au
14363block.blars.org
13088blackholes.five-ten-sg.com (union of all results)
12417blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
11908sbl-xbl.spamhaus.org (union of all results)
11329dnsbl.sorbs.net (union of all results)
10277xbl.spamhaus.org (union of all results)
10264cbl.abuseat.org
10260xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
10260sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
7731dynablock.njabl.org
7446dnsbl.sorbs.net (result 127.0.0.10 = dialup)
7320unconfirmed.dsbl.org
7185list.dsbl.org
7184dsbl.dnsbl.net.au
6720no-more-funn.moensted.dk (union of all results)
4952cn-kr.blackholes.us (union of all results)
4632sbl.csma.biz
4414psbl.surriel.com
4232dnsbl.njabl.org (union of all results)
3888bl.spamcop.net
3770ipwhois.rfc-ignorant.org
3285l2.spews.dnsbl.sorbs.net
3155no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
3028wpbl.dnsbl.net.au
3011dnsbl.ahbl.org (union of all results)
2805l1.spews.dnsbl.sorbs.net
2788spews.dnsbl.net.au
2625cn-kr.blackholes.us (result 127.0.0.3 = Korea)
2625korea.blackholes.us
2442dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2418korea.services.net
2368rmst.dnsbl.net.au
2327cn-kr.blackholes.us (result 127.0.0.2 = China)
2327china.blackholes.us
2019blacklist.spambag.org
1868pdl.blackholes.us
1838bl.csma.biz
1794dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1782no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1772sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1772sbl.spamhaus.org
1769dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1538dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1452spamsources.fabel.dk
1359spam.wytnij.to
1260dnsbl.njabl.org (result 127.0.0.3 = dialup)
1197dnsbl.ahbl.org (result 127.0.0.4 = spam source)
1066dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1029xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1029sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1029opm.blitzed.org
976ricn.dnsbl.net.au
961comcast.blackholes.us
941dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
914sbbl.they.com
881no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
792probes.dnsbl.net.au
683no-more-funn.moensted.dk (result 127.0.0.9 = misc)
651spamguard.leadmon.net (union of all results)
635spamguard.leadmon.net (result 127.0.0.2 = dialup)
600brazil.blackholes.us
596level3.blackholes.us
585dun.dnsrbl.net
583ybl.megacity.org
578relays.visi.com
570unsure.nether.net
512japan.blackholes.us
486cw.blackholes.us
483taiwan.blackholes.us
387dnsbl.antispam.or.id
385blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
367rr.blackholes.us
360rbl.rangers.eu.org (union of all results)
281blackholes.intersil.net
277dnsbl.njabl.org (result 127.0.0.2 = source or relay)
266dnsbl.njabl.org (result 127.0.0.4 = spam source)
263charter.blackholes.us
262relays.ordb.org
243no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
229russia.blackholes.us
212blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
200osps.dnsbl.net.au
193tr.countries.nerd.dk
191turkey.blackholes.us
185qwest.blackholes.us
183hongkong.blackholes.us
176rbl.rangers.eu.org (result 127.0.0.4 = dialup)
170ohps.dnsbl.net.au
169interbusiness.blackholes.us
158wanadoo-fr.blackholes.us
156infolink.blackholes.us
1533y.spam.mrs.kithrup.com
141verio.blackholes.us
138flowgoaway.com
136argentina.blackholes.us
127singapore.blackholes.us
124spamsources.yamta.org (result 127.0.0.2 = spam source)
124dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
118multihop.dsbl.org
105dnsbl.sorbs.net (result 127.0.0.5 = open relay)
104dialup.blacklist.jippg.org (union of all results)
102dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
101osrs.dnsbl.net.au
96xo.blackholes.us
78malaysia.blackholes.us
78relays.nether.net
74mail-abuse.blacklist.jippg.org
71rbl.rangers.eu.org (result 127.0.0.3 = spam haven)
70bellsouth.blackholes.us
69mexico.blackholes.us
69rbl.rangers.eu.org (result 127.0.0.2 = spam source)
60he.blackholes.us
54internap.blackholes.us
51thailand.blackholes.us
50covad.blackholes.us
50above.blackholes.us
49dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
48hil.habeas.com
45ph.rbl.cluecentral.net
42inflow.blackholes.us
41telstra.blackholes.us
37blackholes.brainerd.net
36rogers.blackholes.us
36cybercon.blackholes.us
32swbell.blackholes.us
32rdts.dnsbl.net.au
30blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
27blackholes.uceb.org (union of all results)
26yipes.blackholes.us
24rbl.rangers.eu.org (result 127.0.0.1 = misc)
22rackspace.blackholes.us
22blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
21exemptions.ahbl.org (not a blacklist!)
19nigeria.blackholes.us
19a2000.blackholes.us
18query.bondedsender.org (not a blacklist!)
17blackholes.uceb.org (result 127.0.0.2 = open relay)
16rbl.rangers.eu.org (result 127.0.0.10 = virus notices)
15broadwing.blackholes.us
15spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
15satos.rbl.cluecentral.net
14eli.blackholes.us
14dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
13blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
12affinity.blackholes.us
10pajo.blackholes.us
10olm.blackholes.us
10blackholes.uceb.org (result 127.0.0.3 = spam source)
9bl.deadbeef.com
9dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
7maxim.blackholes.us
7owps.dnsbl.net.au
7dnsbl.ahbl.org (result 127.0.0.15 = open relay)
6navisite.blackholes.us
6no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
6blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
5burst.blackholes.us
5no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
5spam.dnsrbl.net
5dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
4epoch.blackholes.us
3dev.null.dk
2rbl.rangers.eu.org (result 127.0.0.9 = worm source)
2rbl.rangers.eu.org (result 127.0.0.5 = relay output)
2relays.bl.kundenserver.de
2dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
2blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
2dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
1ciberlynx.blackholes.us
1spamsites.dnsbl.net.au
1omrs.dnsbl.net.au
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
1no-more-funn.moensted.dk (result 127.0.0.11 = repeated probes)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)

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
26795(total number of IP addresses whose names were tested, including 408 at SDSC)
12147(union of all domain zones)
8818abuse.rfc-ignorant.org
6781rddn.dnsbl.net.au
3735whois.rfc-ignorant.org (union of all results)
2533whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1202whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1016bulk.rhs.mailpolice.com
562rhsbl.ahbl.org
299blackhole.securitysage.com
224bl.deadbeef.com
33porn.rhs.mailpolice.com
20postmaster.rfc-ignorant.org
19dsn.rfc-ignorant.org (zone not intended for this use)
1bogusmx.rfc-ignorant.org

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

HitsDNS Zone
21347(total number of domains tested, including 426 at SDSC)
6478(union of all domain zones)
2844whois.rfc-ignorant.org (union of all results)
2438whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2243abuse.rfc-ignorant.org
1093bulk.rhs.mailpolice.com
933postmaster.rfc-ignorant.org
759rhsbl.ahbl.org
683dsn.rfc-ignorant.org
406whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
387blackhole.securitysage.com
270bogusmx.rfc-ignorant.org
181bl.deadbeef.com
62porn.rhs.mailpolice.com
47ex.dnsbl.org (union of all results)
44ex.dnsbl.org (result 127.0.0.2 = spamsites)
34rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
34rhsbl.sorbs.net (union of all results)
28rddn.dnsbl.net.au (zone not intended for this use)
4ex.dnsbl.org (result 127.0.0.3 = spam source)
2rhsbl.sorbs.net (result 127.0.0.12 = domain does not send mail)
2cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 21 June 2004.