Blacklists Compared

12 March 2005

[ 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.

HitsDNS Zone
38190(total number of IP addresses tested, including 475 at SDSC)
33028(union of most IP zones)
23091t1.dnsbl.net.au
22922blackholes.five-ten-sg.com (union of all results)
22174blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
17317dnsbl.sorbs.net (union of all results)
14856sbl-xbl.spamhaus.org (union of all results)
13449xbl.spamhaus.org (union of all results)
13405cn-kr.blackholes.us (union of all results)
12369cbl.abuseat.org
12363sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
12362xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
12250no-more-funn.moensted.dk (union of all results)
12214dnsbl.sorbs.net (result 127.0.0.10 = dialup)
10064dynablock.njabl.org
10033unconfirmed.dsbl.org
9940list.dsbl.org
9931dsbl.dnsbl.net.au
9554cn-kr.blackholes.us (result 127.0.0.3 = Korea)
9554korea.blackholes.us
9549korea.services.net
8987no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
8592rmst.dnsbl.net.au
7084sbl.csma.biz
7020psbl.surriel.com
6084combined-hib.dnsiplists.completewhois.com (union of all results)
6041combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
4420bl.spamcop.net
4289bl.csma.biz
4028dnsbl.njabl.org (union of all results)
3851cn-kr.blackholes.us (result 127.0.0.2 = China)
3851china.blackholes.us
3723blacklist.spambag.org
3355sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
3354xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
3345opm.blitzed.org
3296l2.spews.dnsbl.sorbs.net
3191dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3047wpbl.dnsbl.net.au
2981dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2838l1.spews.dnsbl.sorbs.net
2832ricn.dnsbl.net.au
2824spews.dnsbl.net.au
2611dnsbl.ahbl.org (union of all results)
2607spamsources.fabel.dk
2078dnsbl.sorbs.net (result 127.0.0.6 = spam source)
2071dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1932sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1931sbl.spamhaus.org
1814dnsbl.regedit64.net
1803spam.wytnij.to
1585no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1510dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1413pdl.blackholes.us
1326dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1215dnsbl.antispam.or.id
1180dnsbl.rangers.eu.org (union of all results)
1013bl.spamcannibal.org
1009no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1005dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
970unsure.nether.net
932brazil.blackholes.us
891comcast.blackholes.us
696probes.dnsbl.net.au
668dnsbl.njabl.org (result 127.0.0.3 = dialup)
644japan.blackholes.us
533dnsbl.ahbl.org (result 127.0.0.4 = spam source)
484ybl.megacity.org
472no-more-funn.moensted.dk (result 127.0.0.9 = misc)
448level3.blackholes.us
437russia.blackholes.us
419rr.blackholes.us
403blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
368taiwan.blackholes.us
287cw.blackholes.us
278charter.blackholes.us
270mexico.blackholes.us
249blackholes.intersil.net
242blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
235argentina.blackholes.us
207no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
202mail-abuse.blacklist.jippg.org
188interbusiness.blackholes.us
180tr.countries.nerd.dk
178turkey.blackholes.us
172query.bondedsender.org (not a blacklist!)
164hongkong.blackholes.us
161qwest.blackholes.us
138verio.blackholes.us
130dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
117ohps.dnsbl.net.au
110wanadoo-fr.blackholes.us
109above.blackholes.us
103thailand.blackholes.us
102internap.blackholes.us
100singapore.blackholes.us
96dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
95flowgoaway.com
92malaysia.blackholes.us
91dnsbl.njabl.org (result 127.0.0.4 = spam source)
88dnsbl.njabl.org (result 127.0.0.2 = source or relay)
85xo.blackholes.us
80multihop.dsbl.org
72cybercon.blackholes.us
71osps.dnsbl.net.au
66dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
64relays.ordb.org
59blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
55bellsouth.blackholes.us
50inflow.blackholes.us
47rogers.blackholes.us
43combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
41relays.nether.net
40he.blackholes.us
39covad.blackholes.us
35telstra.blackholes.us
33ph.rbl.cluecentral.net
32a2000.blackholes.us
30blackholes.uceb.org (union of all results)
28nigeria.blackholes.us
25infolink.blackholes.us
25blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
24yipes.blackholes.us
23eli.blackholes.us
23spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
23spamguard.leadmon.net (union of all results)
22blackholes.uceb.org (result 127.0.0.3 = spam source)
22osrs.dnsbl.net.au
22dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
21rdts.dnsbl.net.au
20dnsbl.sorbs.net (result 127.0.0.5 = open relay)
20dialup.blacklist.jippg.org (union of all results)
18dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
18dnsbl.ahbl.org (result 127.0.0.15 = open relay)
18exemptions.ahbl.org (not a blacklist!)
16rackspace.blackholes.us
13burst.blackholes.us
12dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
12blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
11swbell.blackholes.us
11dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
10lauderdale.blackholes.us
10blackholes.brainerd.net
9affinity.blackholes.us
8navisite.blackholes.us
8broadwing.blackholes.us
8blackholes.uceb.org (result 127.0.0.2 = open relay)
8hil.habeas.com
8bl.deadbeef.com
7owps.dnsbl.net.au
7satos.rbl.cluecentral.net
6maxim.blackholes.us
6blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
5olm.blackholes.us
5epoch.blackholes.us
4pajo.blackholes.us
4dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
3dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
2omrs.dnsbl.net.au
2dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
2no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
1ciberlynx.blackholes.us
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1work.drbl.croco.net

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
38190(total number of IP addresses whose names were tested, including 475 at SDSC)
15247(union of all domain zones)
11421abuse.rfc-ignorant.org
7580rddn.dnsbl.net.au
4036whois.rfc-ignorant.org (union of all results)
3288dynamic.rhs.mailpolice.com
2848whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1755webmail.rhs.mailpolice.com
1189whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
892rhsbl.ahbl.org
533bulk.rhs.mailpolice.com
359adv.rhs.mailpolice.com
219bl.deadbeef.com
20postmaster.rfc-ignorant.org
14dsn.rfc-ignorant.org (zone not intended for this use)
9porn.rhs.mailpolice.com
1blackhole.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
26064(total number of domains tested, including 369 at SDSC)
6579(union of all domain zones)
2548whois.rfc-ignorant.org (union of all results)
2130whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2001abuse.rfc-ignorant.org
1212rhsbl.ahbl.org
948postmaster.rfc-ignorant.org
909webmail.rhs.mailpolice.com
692dsn.rfc-ignorant.org
655bulk.rhs.mailpolice.com
418whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
246bogusmx.rfc-ignorant.org
198blackhole.securitysage.com
198adv.rhs.mailpolice.com
178bl.deadbeef.com
104porn.rhs.mailpolice.com
77rddn.dnsbl.net.au (zone not intended for this use)
40rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
40rhsbl.sorbs.net (union of all results)
38dynamic.rhs.mailpolice.com
15ex.dnsbl.org
2fraud.rhs.mailpolice.com
2cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 25 March 2005.