Blacklists Compared

13 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
32842(total number of IP addresses tested, including 494 at SDSC)
27360(union of most IP zones)
21774t1.dnsbl.net.au
18479blackholes.five-ten-sg.com (union of all results)
17651blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
15162dnsbl.sorbs.net (union of all results)
14080sbl-xbl.spamhaus.org (union of all results)
12874xbl.spamhaus.org (union of all results)
12828cbl.abuseat.org
12810xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
12810sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
9991dnsbl.sorbs.net (result 127.0.0.10 = dialup)
9367unconfirmed.dsbl.org
9253list.dsbl.org
9248dsbl.dnsbl.net.au
9162no-more-funn.moensted.dk (union of all results)
9042dynablock.njabl.org
8857cn-kr.blackholes.us (union of all results)
6205cn-kr.blackholes.us (result 127.0.0.3 = Korea)
6205korea.blackholes.us
6196korea.services.net
6122sbl.csma.biz
5766no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5716rmst.dnsbl.net.au
5508combined-hib.dnsiplists.completewhois.com (union of all results)
5489combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
5285psbl.surriel.com
4068dnsbl.njabl.org (union of all results)
3819bl.csma.biz
3770blacklist.spambag.org
3312bl.spamcop.net
3201dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2865wpbl.dnsbl.net.au
2862l2.spews.dnsbl.sorbs.net
2785dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2652cn-kr.blackholes.us (result 127.0.0.2 = China)
2652china.blackholes.us
2453spews.dnsbl.net.au
2394l1.spews.dnsbl.sorbs.net
2205dnsbl.ahbl.org (union of all results)
1997ricn.dnsbl.net.au
1984spamsources.fabel.dk
1974dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1796no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1789pdl.blackholes.us
1557sbl.spamhaus.org
1528sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1319unsure.nether.net
1316dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1271spam.wytnij.to
1111dnsbl.antispam.or.id
1099dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1023bl.spamcannibal.org
979dnsbl.njabl.org (result 127.0.0.3 = dialup)
941dnsbl.rangers.eu.org (union of all results)
906brazil.blackholes.us
873dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
824dnsbl.ahbl.org (result 127.0.0.4 = spam source)
776xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
776sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
774opm.blitzed.org
759work.drbl.croco.net
730no-more-funn.moensted.dk (result 127.0.0.9 = misc)
718dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
677no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
646level3.blackholes.us
630japan.blackholes.us
609probes.dnsbl.net.au
524comcast.blackholes.us
506blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
498taiwan.blackholes.us
439ybl.megacity.org
345rr.blackholes.us
323charter.blackholes.us
318mexico.blackholes.us
307cw.blackholes.us
235blackholes.intersil.net
221no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
217block.blars.org
216argentina.blackholes.us
214blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
206russia.blackholes.us
203qwest.blackholes.us
175hongkong.blackholes.us
160interbusiness.blackholes.us
158dnsbl.njabl.org (result 127.0.0.4 = spam source)
156dnsbl.njabl.org (result 127.0.0.2 = source or relay)
153above.blackholes.us
141wanadoo-fr.blackholes.us
137ohps.dnsbl.net.au
128verio.blackholes.us
128osps.dnsbl.net.au
127query.bondedsender.org (not a blacklist!)
126tr.countries.nerd.dk
126flowgoaway.com
125dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
124singapore.blackholes.us
123turkey.blackholes.us
115xo.blackholes.us
113dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
111relaywatcher.n13mbl.com
100multihop.dsbl.org
85relays.ordb.org
85spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
85spamguard.leadmon.net (union of all results)
82internap.blackholes.us
75dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
72cybercon.blackholes.us
71thailand.blackholes.us
67dialup.blacklist.jippg.org (union of all results)
64dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
62dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
61malaysia.blackholes.us
60he.blackholes.us
52yipes.blackholes.us
51bellsouth.blackholes.us
49relays.nether.net
49blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
46osrs.dnsbl.net.au
45dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
45ph.rbl.cluecentral.net
43mail-abuse.blacklist.jippg.org
42covad.blackholes.us
41inflow.blackholes.us
39nigeria.blackholes.us
35blackholes.brainerd.net
34telstra.blackholes.us
30rogers.blackholes.us
29blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
27swbell.blackholes.us
23broadwing.blackholes.us
23rdts.dnsbl.net.au
23blackholes.uceb.org (union of all results)
22a2000.blackholes.us
22dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
22blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
20eli.blackholes.us
19combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
18dnsbl.ahbl.org (result 127.0.0.15 = open relay)
17rackspace.blackholes.us
16dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
14exemptions.ahbl.org (not a blacklist!)
12navisite.blackholes.us
12maxim.blackholes.us
12epoch.blackholes.us
12blackholes.uceb.org (result 127.0.0.3 = spam source)
11dnsbl.sorbs.net (result 127.0.0.5 = open relay)
11hil.habeas.com
11bl.deadbeef.com
10satos.rbl.cluecentral.net
9olm.blackholes.us
7burst.blackholes.us
7blackholes.uceb.org (result 127.0.0.6 = spam haven)
6affinity.blackholes.us
5lauderdale.blackholes.us
5infolink.blackholes.us
5relays.bl.kundenserver.de
4blackholes.uceb.org (result 127.0.0.2 = open relay)
4owps.dnsbl.net.au
4blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
3pajo.blackholes.us
3dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
3blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
3dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
2no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
2no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1spamsites.dnsbl.net.au
1omrs.dnsbl.net.au
1owfs.dnsbl.net.au
1dev.null.dk
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)

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
32842(total number of IP addresses whose names were tested, including 494 at SDSC)
13844(union of all domain zones)
9939abuse.rfc-ignorant.org
6892rddn.dnsbl.net.au
5205dynamic.rhs.mailpolice.com
4047whois.rfc-ignorant.org (union of all results)
3094whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1488webmail.rhs.mailpolice.com
953whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
564bulk.rhs.mailpolice.com
564rhsbl.ahbl.org
440adv.rhs.mailpolice.com
267bl.deadbeef.com
29postmaster.rfc-ignorant.org
21dsn.rfc-ignorant.org (zone not intended for this use)
21porn.rhs.mailpolice.com
8blackhole.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
28368(total number of domains tested, including 294 at SDSC)
8880(union of all domain zones)
3550whois.rfc-ignorant.org (union of all results)
3100whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2549abuse.rfc-ignorant.org
1297bulk.rhs.mailpolice.com
1175postmaster.rfc-ignorant.org
1132webmail.rhs.mailpolice.com
1073rhsbl.ahbl.org
941dsn.rfc-ignorant.org
450whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
366bogusmx.rfc-ignorant.org
252bl.deadbeef.com
230adv.rhs.mailpolice.com
73porn.rhs.mailpolice.com
57rddn.dnsbl.net.au (zone not intended for this use)
53rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
53rhsbl.sorbs.net (union of all results)
36dynamic.rhs.mailpolice.com
19ex.dnsbl.org
2cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 26 November 2004.