Blacklists Compared

24 January 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
19103(total number of IP addresses tested, including 412 at SDSC)
15072(union of most IP zones)
9592dnsbl.sorbs.net (union of all results)
8901t1.dnsbl.net.au
8286block.blars.org
7792unconfirmed.dsbl.org
7717blackholes.five-ten-sg.com (union of all results)
7637list.dsbl.org
7635dsbl.dnsbl.net.au
7620sbl-xbl.spamhaus.org (union of all results)
6753blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
6272cbl.abuseat.org
6250xbl.spamhaus.org
6247sbl-xbl.spamhaus.org (result 127.0.0.4 = Spamhaus XBL)
6041dnsbl.sorbs.net (result 127.0.0.10 = dialup)
5924dynablock.njabl.org
5219dnsbl.njabl.org (union of all results)
4145bl.spamcop.net
3938no-more-funn.moensted.dk (union of all results)
3317dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3253sbl.csma.biz
2528dnsbl.ahbl.org (union of all results)
2393dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
2212spam.wytnij.to
2201cn-kr.blackholes.us (union of all results)
2068ipwhois.rfc-ignorant.org
2025dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2018unsure.nether.net
1996dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1715no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
1707l2.spews.dnsbl.sorbs.net
1654bl.csma.biz
1649no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1583psbl.surriel.com
1546sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1546sbl.spamhaus.org
1369l1.spews.dnsbl.sorbs.net
1355spews.dnsbl.net.au
1240cn-kr.blackholes.us (result 127.0.0.2 = China)
1240china.blackholes.us
1127dnsbl.njabl.org (result 127.0.0.3 = dialup)
961cn-kr.blackholes.us (result 127.0.0.3 = Korea)
961korea.blackholes.us
952korea.services.net
938rmst.dnsbl.net.au
706ybl.megacity.org
684spamsources.fabel.dk
679blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
618dnsbl.njabl.org (result 127.0.0.4 = spam source)
610opm.blitzed.org
606dnsbl.sorbs.net (result 127.0.0.6 = spam source)
552probes.dnsbl.net.au
515relays.visi.com
508pss.spambusters.org.ar
503dnsbl.ahbl.org (result 127.0.0.4 = spam source)
491spamguard.leadmon.net (union of all results)
479spamguard.leadmon.net (result 127.0.0.2 = dialup)
456cw.blackholes.us
442blacklist.spambag.org
401blackholes.intersil.net
377comcast.blackholes.us
361level3.blackholes.us
351brazil.blackholes.us
351no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
311rr.blackholes.us
267work.drbl.croco.net
242relaywatcher.n13mbl.com
237dnsbl.antispam.or.id
230hil.habeas.com
228blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
223no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
217taiwan.blackholes.us
216japan.blackholes.us
177wanadoo-fr.blackholes.us
171dnsbl.njabl.org (result 127.0.0.2 = source or relay)
168ricn.dnsbl.net.au
162charter.blackholes.us
161russia.blackholes.us
139qwest.blackholes.us
137multihop.dsbl.org
136dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
136dialup.blacklist.jippg.org (union of all results)
133interbusiness.blackholes.us
128mail-abuse.blacklist.jippg.org
127xo.blackholes.us
125verio.blackholes.us
123hongkong.blackholes.us
122relays.ordb.org
113mexico.blackholes.us
109internap.blackholes.us
107singapore.blackholes.us
102osps.dnsbl.net.au
97dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
97ohps.dnsbl.net.au
96infolink.blackholes.us
96dun.dnsrbl.net
90query.bondedsender.org (not a blacklist!)
88tr.countries.nerd.dk
87turkey.blackholes.us
81dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
80flowgoaway.com
79above.blackholes.us
74argentina.blackholes.us
74sbbl.they.com
71dnsbl.sorbs.net (result 127.0.0.5 = open relay)
69osrs.dnsbl.net.au
68rogers.blackholes.us
65dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
63relays.nether.net
60spam.exsilia.net (union of all results)
59yipes.blackholes.us
59a2000.blackholes.us
49rdts.dnsbl.net.au
48he.blackholes.us
47blackholes.uceb.org (union of all results)
44no-more-funn.moensted.dk (result 127.0.0.9 = misc)
41blackholes.brainerd.net
40inflow.blackholes.us
39relays.bl.kundenserver.de
39spam.exsilia.net (result 127.0.0.2 = spam source)
37bellsouth.blackholes.us
36telstra.blackholes.us
34exemptions.ahbl.org (not a blacklist!)
33nigeria.blackholes.us
32malaysia.blackholes.us
30thailand.blackholes.us
29cybercon.blackholes.us
28ph.rbl.cluecentral.net
24rackspace.blackholes.us
24covad.blackholes.us
23blackholes.uceb.org (result 127.0.0.2 = open relay)
22blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
21blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
21spam.exsilia.net (result 127.0.0.3 = virus source)
19blackholes.uceb.org (result 127.0.0.3 = spam source)
18satos.rbl.cluecentral.net
163y.spam.mrs.kithrup.com
15eli.blackholes.us
14broadwing.blackholes.us
13swbell.blackholes.us
11spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
8no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
8spam.dnsrbl.net
8bl.deadbeef.com
7olm.blackholes.us
7owps.dnsbl.net.au
6pajo.blackholes.us
6maxim.blackholes.us
6burst.blackholes.us
5spamsources.yamta.org (result 127.0.0.2 = spam source)
5epoch.blackholes.us
5affinity.blackholes.us
5blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
5blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
4ciberlynx.blackholes.us
4no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
4dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
3blackholes.uceb.org (result 127.0.0.4 = spam source network)
3omrs.dnsbl.net.au
3dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
3blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
2navisite.blackholes.us
2blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
2dev.null.dk
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
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
19103(total number of IP addresses whose names were tested, including 412 at SDSC)
9936(union of all domain zones)
6967abuse.rfc-ignorant.org
5401rddn.dnsbl.net.au
1737whois.rfc-ignorant.org (union of all results)
900whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
838whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
667bulk.rhs.mailpolice.com
480blackhole.securitysage.com
285rhsbl.ahbl.org
157bl.deadbeef.com
45porn.rhs.mailpolice.com
8dsn.rfc-ignorant.org (zone not intended for this use)
7postmaster.rfc-ignorant.org
5bogusmx.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
10977(total number of domains tested, including 257 at SDSC)
4198(union of all domain zones)
1560bulk.rhs.mailpolice.com
1234whois.rfc-ignorant.org (union of all results)
1058whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1039abuse.rfc-ignorant.org
696rhsbl.ahbl.org
535postmaster.rfc-ignorant.org
522blackhole.securitysage.com
487dsn.rfc-ignorant.org
176whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
90bogusmx.rfc-ignorant.org
72porn.rhs.mailpolice.com
68bl.deadbeef.com
60rddn.dnsbl.net.au (zone not intended for this use)
6rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
6rhsbl.sorbs.net (union of all results)
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 3 February 2004.