Blacklists Compared

22 May 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
27304(total number of IP addresses tested, including 272 at SDSC)
21945(union of most IP zones)
15539t1.dnsbl.net.au
13997block.blars.org
13395blackholes.five-ten-sg.com (union of all results)
12629blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
11854sbl-xbl.spamhaus.org (union of all results)
11315dnsbl.sorbs.net (union of all results)
9932xbl.spamhaus.org (union of all results)
9898cbl.abuseat.org
9886xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
9886sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
7779dynablock.njabl.org
7453dnsbl.sorbs.net (result 127.0.0.10 = dialup)
7174unconfirmed.dsbl.org
7047dsbl.dnsbl.net.au
7047list.dsbl.org
6489no-more-funn.moensted.dk (union of all results)
4802cn-kr.blackholes.us (union of all results)
4164dnsbl.njabl.org (union of all results)
4156sbl.csma.biz
3984psbl.surriel.com
3612ipwhois.rfc-ignorant.org
3585l2.spews.dnsbl.sorbs.net
3293bl.spamcop.net
3179l1.spews.dnsbl.sorbs.net
3169spews.dnsbl.net.au
3091wpbl.dnsbl.net.au
2934no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
2878dnsbl.ahbl.org (union of all results)
2741rmst.dnsbl.net.au
2706cn-kr.blackholes.us (result 127.0.0.2 = China)
2706china.blackholes.us
2304blacklist.spambag.org
2157dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2096cn-kr.blackholes.us (result 127.0.0.3 = Korea)
2096korea.blackholes.us
2055sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
2055sbl.spamhaus.org
2005korea.services.net
1986pdl.blackholes.us
1892no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1834spam.wytnij.to
1637dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1633dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1569bl.csma.biz
1501spamsources.fabel.dk
1363dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1250dnsbl.njabl.org (result 127.0.0.3 = dialup)
1234dnsbl.ahbl.org (result 127.0.0.4 = spam source)
1233dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1033work.drbl.croco.net
1022comcast.blackholes.us
1001dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
973opm.blitzed.org
972xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
972sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
920relays.visi.com
755ybl.megacity.org
731no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
689ricn.dnsbl.net.au
681brazil.blackholes.us
680no-more-funn.moensted.dk (result 127.0.0.9 = misc)
675unsure.nether.net
670spamguard.leadmon.net (union of all results)
635probes.dnsbl.net.au
589spamguard.leadmon.net (result 127.0.0.2 = dialup)
545dnsbl.njabl.org (result 127.0.0.4 = spam source)
506level3.blackholes.us
496japan.blackholes.us
494rr.blackholes.us
491sbbl.they.com
481cw.blackholes.us
433blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
400taiwan.blackholes.us
384rbl.rangers.eu.org (union of all results)
359blackholes.intersil.net
279no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
263dnsbl.antispam.or.id
258blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
254mexico.blackholes.us
252charter.blackholes.us
234dnsbl.njabl.org (result 127.0.0.2 = source or relay)
211russia.blackholes.us
197qwest.blackholes.us
187rbl.rangers.eu.org (result 127.0.0.4 = dialup)
186relays.ordb.org
164hongkong.blackholes.us
161infolink.blackholes.us
157flowgoaway.com
1563y.spam.mrs.kithrup.com
155wanadoo-fr.blackholes.us
155tr.countries.nerd.dk
153turkey.blackholes.us
141osps.dnsbl.net.au
140argentina.blackholes.us
139interbusiness.blackholes.us
136singapore.blackholes.us
133verio.blackholes.us
130ohps.dnsbl.net.au
120multihop.dsbl.org
115dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
113malaysia.blackholes.us
101xo.blackholes.us
99dialup.blacklist.jippg.org (union of all results)
97dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
94dnsbl.sorbs.net (result 127.0.0.5 = open relay)
84rbl.rangers.eu.org (result 127.0.0.3 = spam haven)
83hil.habeas.com
82internap.blackholes.us
81spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
79spamsources.yamta.org (result 127.0.0.2 = spam source)
78mail-abuse.blacklist.jippg.org
77dun.dnsrbl.net
68osrs.dnsbl.net.au
66he.blackholes.us
66bellsouth.blackholes.us
66relays.nether.net
63dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
61ph.rbl.cluecentral.net
59above.blackholes.us
59rbl.rangers.eu.org (result 127.0.0.2 = spam source)
55rogers.blackholes.us
54thailand.blackholes.us
51inflow.blackholes.us
47rdts.dnsbl.net.au
44telstra.blackholes.us
39swbell.blackholes.us
36cybercon.blackholes.us
36covad.blackholes.us
36blackholes.brainerd.net
32yipes.blackholes.us
29blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
25rbl.rangers.eu.org (result 127.0.0.1 = misc)
24rbl.rangers.eu.org (result 127.0.0.10 = virus notices)
21nigeria.blackholes.us
21a2000.blackholes.us
21exemptions.ahbl.org (not a blacklist!)
19query.bondedsender.org (not a blacklist!)
19dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
19blackholes.uceb.org (union of all results)
17blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
17blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
17satos.rbl.cluecentral.net
14rackspace.blackholes.us
14affinity.blackholes.us
13eli.blackholes.us
13blackholes.uceb.org (result 127.0.0.2 = open relay)
12broadwing.blackholes.us
10olm.blackholes.us
9pajo.blackholes.us
9dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
8pss.spambusters.org.ar
8blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
7navisite.blackholes.us
7owps.dnsbl.net.au
7no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
6epoch.blackholes.us
6blackholes.uceb.org (result 127.0.0.3 = spam source)
6relays.bl.kundenserver.de
5maxim.blackholes.us
5burst.blackholes.us
5bl.deadbeef.com
4dev.null.dk
3rbl.rangers.eu.org (result 127.0.0.5 = relay output)
3dnsbl.ahbl.org (result 127.0.0.15 = open relay)
2ciberlynx.blackholes.us
2rbl.rangers.eu.org (result 127.0.0.9 = worm source)
2spamsites.dnsbl.net.au
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)
2blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1spam.dnsrbl.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
27304(total number of IP addresses whose names were tested, including 272 at SDSC)
12456(union of all domain zones)
8933abuse.rfc-ignorant.org
6872rddn.dnsbl.net.au
3841whois.rfc-ignorant.org (union of all results)
2516whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1325whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1019bulk.rhs.mailpolice.com
623rhsbl.ahbl.org
429blackhole.securitysage.com
224bl.deadbeef.com
54porn.rhs.mailpolice.com
22postmaster.rfc-ignorant.org
17dsn.rfc-ignorant.org (zone not intended for this use)
2bogusmx.rfc-ignorant.org

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

HitsDNS Zone
22946(total number of domains tested, including 265 at SDSC)
7782(union of all domain zones)
3088whois.rfc-ignorant.org (union of all results)
2618whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2140abuse.rfc-ignorant.org
2101bulk.rhs.mailpolice.com
1595rhsbl.ahbl.org
931blackhole.securitysage.com
920postmaster.rfc-ignorant.org
769dsn.rfc-ignorant.org
470whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
316bogusmx.rfc-ignorant.org
157bl.deadbeef.com
53porn.rhs.mailpolice.com
44ex.dnsbl.org (union of all results)
41ex.dnsbl.org (result 127.0.0.2 = spamsites)
38rddn.dnsbl.net.au (zone not intended for this use)
32rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
32rhsbl.sorbs.net (union of all results)
3ex.dnsbl.org (result 127.0.0.3 = spam source)
2rhsbl.sorbs.net (result 127.0.0.12 = domain does not send mail)
2cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 11 June 2004.