Blacklists Compared

26 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
28021(total number of IP addresses tested, including 386 at SDSC)
22201(union of most IP zones)
17008t1.dnsbl.net.au
15707block.blars.org
14564blackholes.five-ten-sg.com (union of all results)
13864blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
12605sbl-xbl.spamhaus.org (union of all results)
11768dnsbl.sorbs.net (union of all results)
11356xbl.spamhaus.org (union of all results)
11346cbl.abuseat.org
11337xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11337sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
8379dynablock.njabl.org
8249unconfirmed.dsbl.org
8135dsbl.dnsbl.net.au
8135list.dsbl.org
8045dnsbl.sorbs.net (result 127.0.0.10 = dialup)
7553no-more-funn.moensted.dk (union of all results)
5861cn-kr.blackholes.us (union of all results)
4466sbl.csma.biz
4263ipwhois.rfc-ignorant.org
4192bl.spamcop.net
4043dnsbl.njabl.org (union of all results)
3655no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
3421cn-kr.blackholes.us (result 127.0.0.3 = Korea)
3421korea.blackholes.us
3164korea.services.net
3080dnsbl.ahbl.org (union of all results)
3023l2.spews.dnsbl.sorbs.net
2953rmst.dnsbl.net.au
2898wpbl.dnsbl.net.au
2593l1.spews.dnsbl.sorbs.net
2578spews.dnsbl.net.au
2440cn-kr.blackholes.us (result 127.0.0.2 = China)
2440china.blackholes.us
2233dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2105blacklist.spambag.org
1989pdl.blackholes.us
1913no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1895dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1748dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1553spamsources.fabel.dk
1488dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1409dnsbl.njabl.org (result 127.0.0.3 = dialup)
1383sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1383sbl.spamhaus.org
1381bl.csma.biz
1256spam.wytnij.to
1226ricn.dnsbl.net.au
1092dnsbl.ahbl.org (result 127.0.0.4 = spam source)
1071unsure.nether.net
1019dnsbl.sorbs.net (result 127.0.0.6 = spam source)
967work.drbl.croco.net
949opm.blitzed.org
942no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
940xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
939sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
932psbl.surriel.com
842comcast.blackholes.us
810dun.dnsrbl.net
806no-more-funn.moensted.dk (result 127.0.0.9 = misc)
800probes.dnsbl.net.au
774dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
733spamguard.leadmon.net (union of all results)
682brazil.blackholes.us
676spamguard.leadmon.net (result 127.0.0.2 = dialup)
666level3.blackholes.us
617japan.blackholes.us
531relays.visi.com
521sbbl.they.com
493cw.blackholes.us
479taiwan.blackholes.us
394rr.blackholes.us
385blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
317dnsbl.antispam.or.id
315blackholes.intersil.net
286dnsbl.rangers.eu.org (union of all results)
278charter.blackholes.us
271no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
250ybl.megacity.org
231mexico.blackholes.us
231blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
210relays.ordb.org
209hongkong.blackholes.us
209dnsbl.njabl.org (result 127.0.0.2 = source or relay)
209dnsbl.njabl.org (result 127.0.0.4 = spam source)
202dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
198qwest.blackholes.us
167interbusiness.blackholes.us
164infolink.blackholes.us
162tr.countries.nerd.dk
160turkey.blackholes.us
159wanadoo-fr.blackholes.us
148ohps.dnsbl.net.au
146verio.blackholes.us
146dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
140flowgoaway.com
133spamsources.yamta.org (result 127.0.0.2 = spam source)
132dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
126russia.blackholes.us
126osps.dnsbl.net.au
1253y.spam.mrs.kithrup.com
123argentina.blackholes.us
116dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
116dialup.blacklist.jippg.org (union of all results)
106multihop.dsbl.org
97singapore.blackholes.us
95xo.blackholes.us
94dnsbl.sorbs.net (result 127.0.0.5 = open relay)
90osrs.dnsbl.net.au
87malaysia.blackholes.us
77bellsouth.blackholes.us
72relays.nether.net
72mail-abuse.blacklist.jippg.org
71he.blackholes.us
65above.blackholes.us
64dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
57spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
55thailand.blackholes.us
54telstra.blackholes.us
54ph.rbl.cluecentral.net
53internap.blackholes.us
51hil.habeas.com
46covad.blackholes.us
45inflow.blackholes.us
43rogers.blackholes.us
43blackholes.brainerd.net
39dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
37swbell.blackholes.us
37cybercon.blackholes.us
32blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
31blackholes.uceb.org (union of all results)
27broadwing.blackholes.us
25yipes.blackholes.us
24query.bondedsender.org (not a blacklist!)
22a2000.blackholes.us
22rdts.dnsbl.net.au
22blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
21nigeria.blackholes.us
20dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
20blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
19satos.rbl.cluecentral.net
19exemptions.ahbl.org (not a blacklist!)
18rackspace.blackholes.us
18eli.blackholes.us
15blackholes.uceb.org (result 127.0.0.3 = spam source)
15blackholes.uceb.org (result 127.0.0.2 = open relay)
12dnsbl.ahbl.org (result 127.0.0.15 = open relay)
11dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
9olm.blackholes.us
8pajo.blackholes.us
8navisite.blackholes.us
8affinity.blackholes.us
8owps.dnsbl.net.au
8bl.deadbeef.com
7blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
6maxim.blackholes.us
6dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
5ciberlynx.blackholes.us
5relays.bl.kundenserver.de
5spam.dnsrbl.net
4epoch.blackholes.us
4dev.null.dk
4no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
4dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
2spamsources.yamta.org (result 127.0.0.3 = repeated probes)
2blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1burst.blackholes.us
1blackholes.uceb.org (result 127.0.0.4 = spam source network)
1spamsites.dnsbl.net.au
1omrs.dnsbl.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)

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
28021(total number of IP addresses whose names were tested, including 386 at SDSC)
12656(union of all domain zones)
9417abuse.rfc-ignorant.org
7393rddn.dnsbl.net.au
3705whois.rfc-ignorant.org (union of all results)
2504whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1201whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
745bulk.rhs.mailpolice.com
514rhsbl.ahbl.org
275bl.deadbeef.com
211blackhole.securitysage.com
31porn.rhs.mailpolice.com
23postmaster.rfc-ignorant.org
17dsn.rfc-ignorant.org (zone not intended for this use)
2bogusmx.rfc-ignorant.org
2cart00ney.surriel.com

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

HitsDNS Zone
22699(total number of domains tested, including 267 at SDSC)
6875(union of all domain zones)
2968whois.rfc-ignorant.org (union of all results)
2519whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2319abuse.rfc-ignorant.org
1158bulk.rhs.mailpolice.com
981postmaster.rfc-ignorant.org
874rhsbl.ahbl.org
719dsn.rfc-ignorant.org
458blackhole.securitysage.com
449whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
325bogusmx.rfc-ignorant.org
171bl.deadbeef.com
65porn.rhs.mailpolice.com
58ex.dnsbl.org (union of all results)
54ex.dnsbl.org (result 127.0.0.2 = spamsites)
44rddn.dnsbl.net.au (zone not intended for this use)
36rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
36rhsbl.sorbs.net (union of all results)
4ex.dnsbl.org (result 127.0.0.3 = spam source)
1rhsbl.sorbs.net (result 127.0.0.12 = domain does not send mail)
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 5 July 2004.