Blacklists Compared

1 January 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, and because it is too aggressive to be widely useful the block.blars.org zone is also excluded.

HitsDNS Zone
32633(total number of IP addresses tested, including 382 at SDSC)
29124(union of most IP zones)
24416t1.dnsbl.net.au
21475blackholes.five-ten-sg.com (union of all results)
20748blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
17244dnsbl.sorbs.net (union of all results)
13717sbl-xbl.spamhaus.org (union of all results)
12586xbl.spamhaus.org (union of all results)
12332cbl.abuseat.org
12296sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
12292xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
12086cn-kr.blackholes.us (union of all results)
11811dnsbl.sorbs.net (result 127.0.0.10 = dialup)
11693no-more-funn.moensted.dk (union of all results)
10622unconfirmed.dsbl.org
10555list.dsbl.org
10553dsbl.dnsbl.net.au
9908dynablock.njabl.org
9141cn-kr.blackholes.us (result 127.0.0.3 = Korea)
9141korea.blackholes.us
9135korea.services.net
8143no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
7515sbl.csma.biz
7409rmst.dnsbl.net.au
7092combined-hib.dnsiplists.completewhois.com (union of all results)
7075combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
5481psbl.surriel.com
5074bl.csma.biz
4483bl.spamcop.net
4356dnsbl.njabl.org (union of all results)
4031blacklist.spambag.org
3280wpbl.dnsbl.net.au
3225dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3117dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2945cn-kr.blackholes.us (result 127.0.0.2 = China)
2945china.blackholes.us
2848dnsbl.ahbl.org (union of all results)
2742ricn.dnsbl.net.au
2509spamsources.fabel.dk
2411l2.spews.dnsbl.sorbs.net
2130dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2121l1.spews.dnsbl.sorbs.net
2080dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1841spews.dnsbl.net.au
1801pdl.blackholes.us
1684no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1658dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1414opm.blitzed.org
1394xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1392sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1336dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1332sbl.spamhaus.org
1325spam.wytnij.to
1309probes.dnsbl.net.au
1304sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1230unsure.nether.net
1086dnsbl.regedit64.net
1083dnsbl.antispam.or.id
988no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
901dnsbl.njabl.org (result 127.0.0.3 = dialup)
880dnsbl.rangers.eu.org (union of all results)
839work.drbl.croco.net
787bl.spamcannibal.org
721brazil.blackholes.us
670dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
668dnsbl.ahbl.org (result 127.0.0.4 = spam source)
655no-more-funn.moensted.dk (result 127.0.0.9 = misc)
653japan.blackholes.us
498level3.blackholes.us
471blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
443taiwan.blackholes.us
439ybl.megacity.org
376comcast.blackholes.us
350charter.blackholes.us
342rr.blackholes.us
270block.blars.org
229mexico.blackholes.us
229no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
226argentina.blackholes.us
221cw.blackholes.us
212hongkong.blackholes.us
191russia.blackholes.us
187mail-abuse.blacklist.jippg.org
177interbusiness.blackholes.us
169qwest.blackholes.us
165blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
156ohps.dnsbl.net.au
144dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
142wanadoo-fr.blackholes.us
133turkey.blackholes.us
132dnsbl.njabl.org (result 127.0.0.4 = spam source)
128xo.blackholes.us
127dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
118query.bondedsender.org (not a blacklist!)
115dnsbl.njabl.org (result 127.0.0.2 = source or relay)
114singapore.blackholes.us
112tr.countries.nerd.dk
106blackholes.intersil.net
103relays.ordb.org
98verio.blackholes.us
94malaysia.blackholes.us
94dialup.blacklist.jippg.org (union of all results)
92dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
85yipes.blackholes.us
75internap.blackholes.us
74cybercon.blackholes.us
66above.blackholes.us
65osps.dnsbl.net.au
62thailand.blackholes.us
61multihop.dsbl.org
50dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
49rogers.blackholes.us
48blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
47dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
44dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
44flowgoaway.com
43bellsouth.blackholes.us
40telstra.blackholes.us
37spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
37dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
37spamguard.leadmon.net (union of all results)
36nigeria.blackholes.us
36relays.nether.net
36ph.rbl.cluecentral.net
36blackholes.brainerd.net
33a2000.blackholes.us
32inflow.blackholes.us
30osrs.dnsbl.net.au
29he.blackholes.us
27swbell.blackholes.us
24dnsbl.sorbs.net (result 127.0.0.5 = open relay)
23covad.blackholes.us
22rdts.dnsbl.net.au
21dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
20blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
20blackholes.uceb.org (union of all results)
18dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
18dnsbl.ahbl.org (result 127.0.0.15 = open relay)
17hil.habeas.com
17combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
17exemptions.ahbl.org (not a blacklist!)
16eli.blackholes.us
13rackspace.blackholes.us
11infolink.blackholes.us
11broadwing.blackholes.us
11blackholes.uceb.org (result 127.0.0.3 = spam source)
11blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
8affinity.blackholes.us
7epoch.blackholes.us
7blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
6burst.blackholes.us
6blackholes.uceb.org (result 127.0.0.2 = open relay)
6satos.rbl.cluecentral.net
5owps.dnsbl.net.au
4blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
3maxim.blackholes.us
3blackholes.uceb.org (result 127.0.0.6 = spam haven)
3no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
3bl.deadbeef.com
2olm.blackholes.us
2navisite.blackholes.us
2dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
2no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1pajo.blackholes.us
1ciberlynx.blackholes.us
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1relays.bl.kundenserver.de
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)

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
32633(total number of IP addresses whose names were tested, including 382 at SDSC)
12589(union of all domain zones)
9561abuse.rfc-ignorant.org
7359rddn.dnsbl.net.au
3761whois.rfc-ignorant.org (union of all results)
2979whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
2934dynamic.rhs.mailpolice.com
1157webmail.rhs.mailpolice.com
784whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
352rhsbl.ahbl.org
348bulk.rhs.mailpolice.com
285bl.deadbeef.com
252adv.rhs.mailpolice.com
20dsn.rfc-ignorant.org (zone not intended for this use)
13postmaster.rfc-ignorant.org
4porn.rhs.mailpolice.com
2blackhole.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
26479(total number of domains tested, including 287 at SDSC)
7615(union of all domain zones)
3242whois.rfc-ignorant.org (union of all results)
2816whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2304abuse.rfc-ignorant.org
1109postmaster.rfc-ignorant.org
1101webmail.rhs.mailpolice.com
936dsn.rfc-ignorant.org
770rhsbl.ahbl.org
636bulk.rhs.mailpolice.com
426whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
336bogusmx.rfc-ignorant.org
247bl.deadbeef.com
233blackhole.securitysage.com
167adv.rhs.mailpolice.com
88rddn.dnsbl.net.au (zone not intended for this use)
60rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
60rhsbl.sorbs.net (union of all results)
51porn.rhs.mailpolice.com
36dynamic.rhs.mailpolice.com
20ex.dnsbl.org
3cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 11 January 2005.