Blacklists Compared

27 November 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
29929(total number of IP addresses tested, including 394 at SDSC)
25119(union of most IP zones)
20112t1.dnsbl.net.au
17227blackholes.five-ten-sg.com (union of all results)
16564blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
14597dnsbl.sorbs.net (union of all results)
12898sbl-xbl.spamhaus.org (union of all results)
11642xbl.spamhaus.org (union of all results)
11602cbl.abuseat.org
11588xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11588sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
9457dnsbl.sorbs.net (result 127.0.0.10 = dialup)
8994unconfirmed.dsbl.org
8888list.dsbl.org
8886dsbl.dnsbl.net.au
8619cn-kr.blackholes.us (union of all results)
8277no-more-funn.moensted.dk (union of all results)
8126dynablock.njabl.org
6620sbl.csma.biz
6201cn-kr.blackholes.us (result 127.0.0.3 = Korea)
6201korea.blackholes.us
6198korea.services.net
5667no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5600rmst.dnsbl.net.au
5484combined-hib.dnsiplists.completewhois.com (union of all results)
5475combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
4317bl.csma.biz
4174psbl.surriel.com
3856bl.spamcop.net
3851dnsbl.njabl.org (union of all results)
3609blacklist.spambag.org
3058wpbl.dnsbl.net.au
2874dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2772l2.spews.dnsbl.sorbs.net
2721dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2443dnsbl.ahbl.org (union of all results)
2418cn-kr.blackholes.us (result 127.0.0.2 = China)
2418china.blackholes.us
2417spews.dnsbl.net.au
2388l1.spews.dnsbl.sorbs.net
2238ricn.dnsbl.net.au
2105spamsources.fabel.dk
1992dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1577dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1452sbl.spamhaus.org
1437sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1427pdl.blackholes.us
1378unsure.nether.net
1351no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1280dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1180spam.wytnij.to
1100dnsbl.antispam.or.id
1086dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
885bl.spamcannibal.org
864work.drbl.croco.net
827brazil.blackholes.us
825dnsbl.rangers.eu.org (union of all results)
817dnsbl.njabl.org (result 127.0.0.3 = dialup)
735opm.blitzed.org
733xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
733sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
715dnsbl.ahbl.org (result 127.0.0.4 = spam source)
706block.blars.org
689probes.dnsbl.net.au
608no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
595dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
559level3.blackholes.us
528japan.blackholes.us
488no-more-funn.moensted.dk (result 127.0.0.9 = misc)
470ybl.megacity.org
454taiwan.blackholes.us
426comcast.blackholes.us
374blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
283cw.blackholes.us
267charter.blackholes.us
264mexico.blackholes.us
259rr.blackholes.us
237blackholes.intersil.net
204dnsbl.njabl.org (result 127.0.0.4 = spam source)
200blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
197argentina.blackholes.us
187qwest.blackholes.us
184no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
178wanadoo-fr.blackholes.us
174interbusiness.blackholes.us
172hongkong.blackholes.us
169russia.blackholes.us
149dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
145tr.countries.nerd.dk
142dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
135xo.blackholes.us
130turkey.blackholes.us
130dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
128dnsbl.njabl.org (result 127.0.0.2 = source or relay)
124flowgoaway.com
119ohps.dnsbl.net.au
114spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
114spamguard.leadmon.net (union of all results)
111verio.blackholes.us
110singapore.blackholes.us
109query.bondedsender.org (not a blacklist!)
91multihop.dsbl.org
87dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
85malaysia.blackholes.us
84above.blackholes.us
83osps.dnsbl.net.au
74relays.ordb.org
72internap.blackholes.us
66cybercon.blackholes.us
63blackholes.brainerd.net
60thailand.blackholes.us
58relaywatcher.n13mbl.com
54he.blackholes.us
51nigeria.blackholes.us
50blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
48ph.rbl.cluecentral.net
45dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
45relays.nether.net
45dialup.blacklist.jippg.org (union of all results)
43bellsouth.blackholes.us
43dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
35osrs.dnsbl.net.au
33inflow.blackholes.us
30mail-abuse.blacklist.jippg.org
27covad.blackholes.us
26telstra.blackholes.us
25dnsbl.sorbs.net (result 127.0.0.5 = open relay)
23yipes.blackholes.us
23rogers.blackholes.us
23blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
20eli.blackholes.us
19blackholes.uceb.org (union of all results)
18a2000.blackholes.us
16rackspace.blackholes.us
16rdts.dnsbl.net.au
15exemptions.ahbl.org (not a blacklist!)
14swbell.blackholes.us
14infolink.blackholes.us
13blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
12broadwing.blackholes.us
12dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
12dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
11blackholes.uceb.org (result 127.0.0.2 = open relay)
10hil.habeas.com
9navisite.blackholes.us
9combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
8dnsbl.ahbl.org (result 127.0.0.15 = open relay)
7olm.blackholes.us
7blackholes.uceb.org (result 127.0.0.3 = spam source)
7owps.dnsbl.net.au
6maxim.blackholes.us
5epoch.blackholes.us
5affinity.blackholes.us
5bl.deadbeef.com
5satos.rbl.cluecentral.net
4pajo.blackholes.us
3burst.blackholes.us
2dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
2dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
1blackholes.uceb.org (result 127.0.0.4 = spam source network)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1omrs.dnsbl.net.au
1no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
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
29929(total number of IP addresses whose names were tested, including 394 at SDSC)
12286(union of all domain zones)
8962abuse.rfc-ignorant.org
6357rddn.dnsbl.net.au
4481dynamic.rhs.mailpolice.com
3525whois.rfc-ignorant.org (union of all results)
2675whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1330webmail.rhs.mailpolice.com
850whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
520rhsbl.ahbl.org
483bulk.rhs.mailpolice.com
360adv.rhs.mailpolice.com
242bl.deadbeef.com
26postmaster.rfc-ignorant.org
18dsn.rfc-ignorant.org (zone not intended for this use)
9porn.rhs.mailpolice.com
3blackhole.securitysage.com
1bogusmx.rfc-ignorant.org

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

HitsDNS Zone
25853(total number of domains tested, including 288 at SDSC)
7103(union of all domain zones)
3232whois.rfc-ignorant.org (union of all results)
2810whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2257abuse.rfc-ignorant.org
1118postmaster.rfc-ignorant.org
929dsn.rfc-ignorant.org
818rhsbl.ahbl.org
422whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
376webmail.rhs.mailpolice.com
328bogusmx.rfc-ignorant.org
306blackhole.securitysage.com
255bl.deadbeef.com
136bulk.rhs.mailpolice.com
57rddn.dnsbl.net.au (zone not intended for this use)
50rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
50rhsbl.sorbs.net (union of all results)
45adv.rhs.mailpolice.com
24dynamic.rhs.mailpolice.com
22ex.dnsbl.org
15porn.rhs.mailpolice.com
2cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 9 December 2004.