Blacklists Compared

13 August 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
41608(total number of IP addresses tested, including 391 at SDSC)
35209(union of most IP zones)
29747block.blars.org
24129t1.dnsbl.net.au
19290dnsbl.sorbs.net (union of all results)
17058sbl-xbl.spamhaus.org (union of all results)
15595xbl.spamhaus.org (union of all results)
14681sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
14675xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
14642cbl.abuseat.org
12840dnsbl.sorbs.net (result 127.0.0.10 = dialup)
9746dynablock.njabl.org
9249rmst.dnsbl.net.au
8548no-more-funn.moensted.dk (union of all results)
8054unconfirmed.dsbl.org
7966list.dsbl.org
7963dsbl.dnsbl.net.au
7884blackholes.five-ten-sg.com (union of all results)
7522blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
6549sbl.csma.biz
5695cn-kr.blackholes.us (union of all results)
5029combined-hib.dnsiplists.completewhois.com (union of all results)
5022combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
4796dnsbl.sorbs.net (result 127.0.0.6 = spam source)
4703blacklist.spambag.org
4349no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
4119bl.spamcop.net
3815korea.services.net
3558l2.spews.dnsbl.sorbs.net
3238bl.csma.biz
3148cn-kr.blackholes.us (result 127.0.0.2 = China)
3148china.blackholes.us
3110dnsbl.njabl.org (union of all results)
2998l1.spews.dnsbl.sorbs.net
2955spews.dnsbl.net.au
2666dnsbl.ahbl.org (union of all results)
2547cn-kr.blackholes.us (result 127.0.0.3 = Korea)
2547korea.blackholes.us
2482spamsources.fabel.dk
2300dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2163wpbl.dnsbl.net.au
2003dnsbl.regedit64.net
1922dnsbl.rangers.eu.org (union of all results)
1893dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1799no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1776no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1721dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
1527sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1525sbl.spamhaus.org
1407unsure.nether.net
1385opm.blitzed.org
1383sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1382xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1361brazil.blackholes.us
1208comcast.blackholes.us
1192bl.spamcannibal.org
1189sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1185xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1164dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1123dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
1051ricn.dnsbl.net.au
946dnsbl.antispam.or.id
930spam.wytnij.to
910dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
766dnsbl.ahbl.org (result 127.0.0.4 = spam source)
720japan.blackholes.us
681taiwan.blackholes.us
578rr.blackholes.us
578dnsbl.njabl.org (result 127.0.0.3 = dialup)
509russia.blackholes.us
489probes.dnsbl.net.au
449no-more-funn.moensted.dk (result 127.0.0.9 = misc)
436tr.countries.nerd.dk
433turkey.blackholes.us
350argentina.blackholes.us
299charter.blackholes.us
276mail-abuse.blacklist.jippg.org
270hongkong.blackholes.us
236cw.blackholes.us
210interbusiness.blackholes.us
188query.bondedsender.org (not a blacklist!)
181dnsbl.njabl.org (result 127.0.0.2 = open relay)
181blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
178no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
173thailand.blackholes.us
169qwest.blackholes.us
164dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
158level3.blackholes.us
155malaysia.blackholes.us
154psbl.surriel.com
154blackholes.intersil.net
130singapore.blackholes.us
124dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
118blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
116verio.blackholes.us
108relays.ordb.org
107dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
96internap.blackholes.us
94xo.blackholes.us
90bellsouth.blackholes.us
89ohps.dnsbl.net.au
84flowgoaway.com
81above.blackholes.us
80multihop.dsbl.org
77cybercon.blackholes.us
65he.blackholes.us
65dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
64wanadoo-fr.blackholes.us
62dnsbl.njabl.org (result 127.0.0.4 = spam source)
47osps.dnsbl.net.au
38telstra.blackholes.us
35inflow.blackholes.us
35a2000.blackholes.us
34osrs.dnsbl.net.au
32blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
31relays.nether.net
29infolink.blackholes.us
29exemptions.ahbl.org (not a blacklist!)
28rogers.blackholes.us
26blackholes.brainerd.net
24yipes.blackholes.us
23eli.blackholes.us
20covad.blackholes.us
20blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
19rdts.dnsbl.net.au
19blackholes.uceb.org (union of all results)
15navisite.blackholes.us
15broadwing.blackholes.us
12dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
11hil.habeas.com
10ciberlynx.blackholes.us
9rackspace.blackholes.us
8epoch.blackholes.us
8affinity.blackholes.us
8blackholes.uceb.org (result 127.0.0.3 = spam source)
8blackholes.uceb.org (result 127.0.0.2 = open relay)
8dnsbl.sorbs.net (result 127.0.0.5 = open relay)
7combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
6blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
5dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
5spamguard.leadmon.net (union of all results)
4pajo.blackholes.us
4olm.blackholes.us
4spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
3nigeria.blackholes.us
3burst.blackholes.us
3owps.dnsbl.net.au
3blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
2blackholes.uceb.org (result 127.0.0.6 = spam haven)
2dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
2no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
2no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
2bl.deadbeef.com
2dialup.blacklist.jippg.org (union of all results)
1blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1omrs.dnsbl.net.au
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1relays.bl.kundenserver.de
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1dnsbl.ahbl.org (result 127.0.0.15 = open relay)
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)

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
41608(total number of IP addresses whose names were tested, including 391 at SDSC)
19205(union of all domain zones)
15178abuse.rfc-ignorant.org
9002rddn.dnsbl.net.au
8638whois.rfc-ignorant.org (union of all results)
6745whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
4868dynamic.rhs.mailpolice.com
1898whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1509webmail.rhs.mailpolice.com
681rhsbl.ahbl.org
457bl.deadbeef.com
388adv.rhs.mailpolice.com
334bulk.rhs.mailpolice.com
92postmaster.rfc-ignorant.org
19dsn.rfc-ignorant.org (zone not intended for this use)
14bogusmx.rfc-ignorant.org
9porn.rhs.mailpolice.com
2blackhole.securitysage.com

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

HitsDNS Zone
23289(total number of domains tested, including 341 at SDSC)
6256(union of all domain zones)
2361whois.rfc-ignorant.org (union of all results)
1997abuse.rfc-ignorant.org
1844whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1124postmaster.rfc-ignorant.org
1104webmail.rhs.mailpolice.com
983rhsbl.ahbl.org
748dsn.rfc-ignorant.org
517whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
388bogusmx.rfc-ignorant.org
361bulk.rhs.mailpolice.com
189adv.rhs.mailpolice.com
145blackhole.securitysage.com
137porn.rhs.mailpolice.com
113bl.deadbeef.com
45rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
45rhsbl.sorbs.net (union of all results)
20rddn.dnsbl.net.au (zone not intended for this use)
14ex.dnsbl.org
8dynamic.rhs.mailpolice.com
2cart00ney.surriel.com
1fraud.rhs.mailpolice.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 27 August 2005.