Blacklists Compared

27 March 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
23811(total number of IP addresses tested, including 397 at SDSC)
18643(union of most IP zones)
13311t1.dnsbl.net.au
11257blackholes.five-ten-sg.com (union of all results)
11032block.blars.org
10265blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
9857sbl-xbl.spamhaus.org (union of all results)
9600dnsbl.sorbs.net (union of all results)
8634xbl.spamhaus.org (union of all results)
8628cbl.abuseat.org
8622sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
8620xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
6775dynablock.njabl.org
6477dnsbl.sorbs.net (result 127.0.0.10 = dialup)
6353unconfirmed.dsbl.org
6183dsbl.dnsbl.net.au
6183list.dsbl.org
5092no-more-funn.moensted.dk (union of all results)
3814dnsbl.njabl.org (union of all results)
3592sbl.csma.biz
3577cn-kr.blackholes.us (union of all results)
3416bl.spamcop.net
2965ipwhois.rfc-ignorant.org
2667psbl.surriel.com
2528l2.spews.dnsbl.sorbs.net
2511dnsbl.ahbl.org (union of all results)
2494wpbl.dnsbl.net.au
2473no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
2292dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2235spews.dnsbl.net.au
2204l1.spews.dnsbl.sorbs.net
2064spam.wytnij.to
1881pdl.blackholes.us
1800cn-kr.blackholes.us (result 127.0.0.2 = China)
1800china.blackholes.us
1777cn-kr.blackholes.us (result 127.0.0.3 = Korea)
1777korea.blackholes.us
1708korea.services.net
1661no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1628rmst.dnsbl.net.au
1624dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1623bl.csma.biz
1500dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1416dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1388sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1388sbl.spamhaus.org
1338unsure.nether.net
1136blacklist.spambag.org
1111spamsources.fabel.dk
1009dnsbl.njabl.org (result 127.0.0.3 = dialup)
921relays.visi.com
884comcast.blackholes.us
884dnsbl.ahbl.org (result 127.0.0.4 = spam source)
883dnsbl.sorbs.net (result 127.0.0.6 = spam source)
771ybl.megacity.org
669blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
618opm.blitzed.org
617xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
617sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
607spamguard.leadmon.net (union of all results)
592probes.dnsbl.net.au
560work.drbl.croco.net
538spamguard.leadmon.net (result 127.0.0.2 = dialup)
512brazil.blackholes.us
506no-more-funn.moensted.dk (result 127.0.0.9 = misc)
499ricn.dnsbl.net.au
483cw.blackholes.us
437pss.spambusters.org.ar
410rr.blackholes.us
389dnsbl.njabl.org (result 127.0.0.4 = spam source)
367taiwan.blackholes.us
354dnsbl.antispam.or.id
352rbl.rangers.eu.org (union of all results)
343level3.blackholes.us
320hil.habeas.com
313blackholes.intersil.net
257charter.blackholes.us
253no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
243blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
232wanadoo-fr.blackholes.us
222no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
210dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
187mexico.blackholes.us
187japan.blackholes.us
169tr.countries.nerd.dk
168osps.dnsbl.net.au
167turkey.blackholes.us
159verio.blackholes.us
158russia.blackholes.us
156multihop.dsbl.org
154qwest.blackholes.us
153interbusiness.blackholes.us
150rbl.rangers.eu.org (result 127.0.0.4 = dialup)
146dnsbl.njabl.org (result 127.0.0.2 = source or relay)
141argentina.blackholes.us
139hongkong.blackholes.us
1303y.spam.mrs.kithrup.com
125dialup.blacklist.jippg.org (union of all results)
124dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
121relays.ordb.org
112ohps.dnsbl.net.au
100internap.blackholes.us
100mail-abuse.blacklist.jippg.org
95rbl.rangers.eu.org (result 127.0.0.3 = spam haven)
86xo.blackholes.us
85infolink.blackholes.us
81dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
81osrs.dnsbl.net.au
80ph.rbl.cluecentral.net
74singapore.blackholes.us
73flowgoaway.com
72rogers.blackholes.us
71query.bondedsender.org (not a blacklist!)
69spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
65relays.nether.net
60malaysia.blackholes.us
60he.blackholes.us
59dnsbl.sorbs.net (result 127.0.0.5 = open relay)
57telstra.blackholes.us
53dun.dnsrbl.net
52bellsouth.blackholes.us
52sbbl.they.com
49rbl.rangers.eu.org (result 127.0.0.2 = spam source)
46above.blackholes.us
44rdts.dnsbl.net.au
42thailand.blackholes.us
38inflow.blackholes.us
34a2000.blackholes.us
32blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
31cybercon.blackholes.us
31broadwing.blackholes.us
31rbl.rangers.eu.org (result 127.0.0.1 = misc)
29covad.blackholes.us
28nigeria.blackholes.us
26dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
26blackholes.uceb.org (union of all results)
25rbl.rangers.eu.org (result 127.0.0.10 = virus notices)
24blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
22rackspace.blackholes.us
21blackholes.brainerd.net
19swbell.blackholes.us
19satos.rbl.cluecentral.net
17blackholes.uceb.org (result 127.0.0.2 = open relay)
17exemptions.ahbl.org (not a blacklist!)
16owps.dnsbl.net.au
15yipes.blackholes.us
14spamsources.yamta.org (result 127.0.0.2 = spam source)
13eli.blackholes.us
11olm.blackholes.us
11bl.deadbeef.com
10maxim.blackholes.us
10blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
9epoch.blackholes.us
9blackholes.uceb.org (result 127.0.0.3 = spam source)
8affinity.blackholes.us
7pajo.blackholes.us
7no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
7blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
5burst.blackholes.us
5no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
5blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
3navisite.blackholes.us
3relays.bl.kundenserver.de
3dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
2blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
2dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
1rbl.rangers.eu.org (result 127.0.0.9 = virus source)
1rbl.rangers.eu.org (result 127.0.0.5 = relay output)
1spamsites.dnsbl.net.au
1omrs.dnsbl.net.au
1dev.null.dk
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
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
23811(total number of IP addresses whose names were tested, including 397 at SDSC)
10914(union of all domain zones)
7525abuse.rfc-ignorant.org
6176rddn.dnsbl.net.au
3014whois.rfc-ignorant.org (union of all results)
1917whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1098whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
655bulk.rhs.mailpolice.com
416rhsbl.ahbl.org
380blackhole.securitysage.com
263bl.deadbeef.com
49porn.rhs.mailpolice.com
19postmaster.rfc-ignorant.org
11dsn.rfc-ignorant.org (zone not intended for this use)
3bogusmx.rfc-ignorant.org

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

HitsDNS Zone
20693(total number of domains tested, including 403 at SDSC)
6388(union of all domain zones)
2583whois.rfc-ignorant.org (union of all results)
2273whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1893abuse.rfc-ignorant.org
1173rhsbl.ahbl.org
906bulk.rhs.mailpolice.com
864postmaster.rfc-ignorant.org
765blackhole.securitysage.com
750dsn.rfc-ignorant.org
310whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
213bogusmx.rfc-ignorant.org
110bl.deadbeef.com
50porn.rhs.mailpolice.com
49ex.dnsbl.org (union of all results)
44ex.dnsbl.org (result 127.0.0.2 = spamsites)
25rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
25rhsbl.sorbs.net (union of all results)
15rddn.dnsbl.net.au (zone not intended for this use)
5ex.dnsbl.org (result 127.0.0.3 = spam source)
2rhsbl.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 12 April 2004.