Blacklists Compared

11 September 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
29877(total number of IP addresses tested, including 423 at SDSC)
24180(union of most IP zones)
18656t1.dnsbl.net.au
17888block.blars.org
17177blackholes.five-ten-sg.com (union of all results)
16387blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
12723sbl-xbl.spamhaus.org (union of all results)
11558xbl.spamhaus.org (union of all results)
11525cbl.abuseat.org
11524sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11518xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11293dnsbl.sorbs.net (union of all results)
8895no-more-funn.moensted.dk (union of all results)
8681cn-kr.blackholes.us (union of all results)
8187unconfirmed.dsbl.org
8070dsbl.dnsbl.net.au
8070list.dsbl.org
7669dynablock.njabl.org
7451dnsbl.sorbs.net (result 127.0.0.10 = dialup)
6028korea.services.net
5992cn-kr.blackholes.us (result 127.0.0.3 = Korea)
5992korea.blackholes.us
5657no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5545ipwhois.rfc-ignorant.org
5204rmst.dnsbl.net.au
4677sbl.csma.biz
4037bl.spamcop.net
3939psbl.surriel.com
3439dnsbl.njabl.org (union of all results)
3392blacklist.spambag.org
3207spam.dnsrbl.net
3083wpbl.dnsbl.net.au
2768dnsbl.ahbl.org (union of all results)
2689cn-kr.blackholes.us (result 127.0.0.2 = China)
2689china.blackholes.us
2499bl.csma.biz
2248l2.spews.dnsbl.sorbs.net
2198spamsources.fabel.dk
2179dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2176ricn.dnsbl.net.au
1896l1.spews.dnsbl.sorbs.net
1891spews.dnsbl.net.au
1657dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1581no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1487dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1481dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1426dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1289sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1289sbl.spamhaus.org
1268spam.wytnij.to
1183pdl.blackholes.us
1068dnsbl.ahbl.org (result 127.0.0.4 = spam source)
936dnsbl.njabl.org (result 127.0.0.3 = dialup)
845probes.dnsbl.net.au
834unsure.nether.net
826no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
799work.drbl.croco.net
740sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
740opm.blitzed.org
739xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
738japan.blackholes.us
709dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
651no-more-funn.moensted.dk (result 127.0.0.9 = misc)
649brazil.blackholes.us
614taiwan.blackholes.us
603level3.blackholes.us
602dnsbl.rangers.eu.org (union of all results)
561ybl.megacity.org
490spamguard.leadmon.net (union of all results)
461blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
447relaywatcher.n13mbl.com
413spamguard.leadmon.net (result 127.0.0.2 = dialup)
386dun.dnsrbl.net
370cw.blackholes.us
367dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
274comcast.blackholes.us
256blackholes.intersil.net
249charter.blackholes.us
248dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
246rr.blackholes.us
220mexico.blackholes.us
218blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
217hongkong.blackholes.us
198no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
186dnsbl.antispam.or.id
183dnsbl.njabl.org (result 127.0.0.4 = spam source)
165qwest.blackholes.us
159dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
154dnsbl.njabl.org (result 127.0.0.2 = source or relay)
140ohps.dnsbl.net.au
134tr.countries.nerd.dk
131flowgoaway.com
128above.blackholes.us
118xo.blackholes.us
107multihop.dsbl.org
101russia.blackholes.us
97wanadoo-fr.blackholes.us
94relays.ordb.org
93internap.blackholes.us
93query.bondedsender.org (not a blacklist!)
92infolink.blackholes.us
91osps.dnsbl.net.au
90singapore.blackholes.us
77spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
75malaysia.blackholes.us
75argentina.blackholes.us
73verio.blackholes.us
66thailand.blackholes.us
62mail-abuse.blacklist.jippg.org
57cybercon.blackholes.us
56dialup.blacklist.jippg.org (union of all results)
53he.blackholes.us
53dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
53dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
53blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
52turkey.blackholes.us
49relays.nether.net
47osrs.dnsbl.net.au
40dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
39inflow.blackholes.us
38ph.rbl.cluecentral.net
36bellsouth.blackholes.us
31interbusiness.blackholes.us
30blackholes.brainerd.net
29blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
27dnsbl.sorbs.net (result 127.0.0.5 = open relay)
26swbell.blackholes.us
26rogers.blackholes.us
25rackspace.blackholes.us
25covad.blackholes.us
24eli.blackholes.us
23yipes.blackholes.us
22dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
22hil.habeas.com
20blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
19rdts.dnsbl.net.au
19blackholes.uceb.org (union of all results)
17dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
16satos.rbl.cluecentral.net
16exemptions.ahbl.org (not a blacklist!)
14nigeria.blackholes.us
14sbbl.they.com
13broadwing.blackholes.us
12maxim.blackholes.us
12blackholes.uceb.org (result 127.0.0.2 = open relay)
11burst.blackholes.us
10a2000.blackholes.us
9epoch.blackholes.us
9relays.visi.com
8olm.blackholes.us
8dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
7telstra.blackholes.us
7affinity.blackholes.us
7blackholes.uceb.org (result 127.0.0.3 = spam source)
6blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
5pajo.blackholes.us
5navisite.blackholes.us
5bl.deadbeef.com
5dnsbl.ahbl.org (result 127.0.0.15 = open relay)
4owps.dnsbl.net.au
4relays.bl.kundenserver.de
3dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
3dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
2lauderdale.blackholes.us
2ciberlynx.blackholes.us
2omrs.dnsbl.net.au
2no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
2no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1spamsites.dnsbl.net.au
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)

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
29877(total number of IP addresses whose names were tested, including 423 at SDSC)
11879(union of all domain zones)
8769abuse.rfc-ignorant.org
5974rddn.dnsbl.net.au
4120whois.rfc-ignorant.org (union of all results)
2524whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1596whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
737bulk.rhs.mailpolice.com
655rhsbl.ahbl.org
306bl.deadbeef.com
22postmaster.rfc-ignorant.org
20dsn.rfc-ignorant.org (zone not intended for this use)
16porn.rhs.mailpolice.com
3bogusmx.rfc-ignorant.org
2blackhole.securitysage.com

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

HitsDNS Zone
23953(total number of domains tested, including 293 at SDSC)
9964(union of all domain zones)
6161whois.rfc-ignorant.org (union of all results)
5735whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2115abuse.rfc-ignorant.org
1208bulk.rhs.mailpolice.com
995postmaster.rfc-ignorant.org
763rhsbl.ahbl.org
762dsn.rfc-ignorant.org
426whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
303bl.deadbeef.com
260bogusmx.rfc-ignorant.org
154blackhole.securitysage.com
60porn.rhs.mailpolice.com
53ex.dnsbl.org (union of all results)
51ex.dnsbl.org (result 127.0.0.2 = spamsites)
31rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
31rhsbl.sorbs.net (union of all results)
22rddn.dnsbl.net.au (zone not intended for this use)
2ex.dnsbl.org (result 127.0.0.3 = spam source)
2cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 23 September 2004.