Blacklists Compared

4 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
33299(total number of IP addresses tested, including 403 at SDSC)
25908(union of most IP zones)
19300t1.dnsbl.net.au
19081block.blars.org
17351blackholes.five-ten-sg.com (union of all results)
16446blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
12619dnsbl.sorbs.net (union of all results)
12433sbl-xbl.spamhaus.org (union of all results)
11177xbl.spamhaus.org (union of all results)
11148cbl.abuseat.org
11138sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11136xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
8583dynablock.njabl.org
8582no-more-funn.moensted.dk (union of all results)
8420dnsbl.sorbs.net (result 127.0.0.10 = dialup)
8375unconfirmed.dsbl.org
8219dsbl.dnsbl.net.au
8219list.dsbl.org
5286korea.services.net
5132ipwhois.rfc-ignorant.org
5046no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
4666rmst.dnsbl.net.au
4131cn-kr.blackholes.us (union of all results)
3792sbl.csma.biz
3732bl.spamcop.net
3725dnsbl.njabl.org (union of all results)
3627psbl.surriel.com
3607blacklist.spambag.org
3319korea.blackholes.us
3309cn-kr.blackholes.us (result 127.0.0.3 = Korea)
2928dnsbl.ahbl.org (union of all results)
2838l2.spews.dnsbl.sorbs.net
2678wpbl.dnsbl.net.au
2353spews.dnsbl.net.au
2336l1.spews.dnsbl.sorbs.net
2319dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2199spam.dnsrbl.net
2070ricn.dnsbl.net.au
2045spamsources.fabel.dk
1916no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1788dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1777bl.csma.biz
1680dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1553dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1412sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1412sbl.spamhaus.org
1345dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1245pdl.blackholes.us
1080dnsbl.ahbl.org (result 127.0.0.4 = spam source)
1078spam.wytnij.to
1043dnsbl.njabl.org (result 127.0.0.3 = dialup)
968work.drbl.croco.net
949brazil.blackholes.us
938unsure.nether.net
849opm.blitzed.org
848xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
848sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
822cn-kr.blackholes.us (result 127.0.0.2 = China)
822china.blackholes.us
737no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
714level3.blackholes.us
594spamguard.leadmon.net (union of all results)
593dun.dnsrbl.net
571blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
560ybl.megacity.org
547no-more-funn.moensted.dk (result 127.0.0.9 = misc)
547dnsbl.rangers.eu.org (union of all results)
536probes.dnsbl.net.au
517spamguard.leadmon.net (result 127.0.0.2 = dialup)
456cw.blackholes.us
449dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
380comcast.blackholes.us
347no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
340charter.blackholes.us
337japan.blackholes.us
329rr.blackholes.us
328taiwan.blackholes.us
316dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
300mexico.blackholes.us
271dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
255qwest.blackholes.us
227blackholes.intersil.net
226russia.blackholes.us
217blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
212verio.blackholes.us
195interbusiness.blackholes.us
194dnsbl.njabl.org (result 127.0.0.2 = source or relay)
185argentina.blackholes.us
184dnsbl.njabl.org (result 127.0.0.4 = spam source)
175tr.countries.nerd.dk
172xo.blackholes.us
172turkey.blackholes.us
160dnsbl.antispam.or.id
147dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
136multihop.dsbl.org
133wanadoo-fr.blackholes.us
130ohps.dnsbl.net.au
130flowgoaway.com
120above.blackholes.us
110infolink.blackholes.us
109relays.ordb.org
106osps.dnsbl.net.au
96query.bondedsender.org (not a blacklist!)
93hongkong.blackholes.us
92singapore.blackholes.us
83internap.blackholes.us
80osrs.dnsbl.net.au
76relays.nether.net
76mail-abuse.blacklist.jippg.org
75spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
74bellsouth.blackholes.us
66dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
65covad.blackholes.us
65dialup.blacklist.jippg.org (union of all results)
64dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
57thailand.blackholes.us
57dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
56he.blackholes.us
56cybercon.blackholes.us
52dnsbl.sorbs.net (result 127.0.0.5 = open relay)
49rackspace.blackholes.us
49malaysia.blackholes.us
48inflow.blackholes.us
45rogers.blackholes.us
44blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
41ph.rbl.cluecentral.net
38yipes.blackholes.us
37eli.blackholes.us
36telstra.blackholes.us
34rdts.dnsbl.net.au
34blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
32blackholes.brainerd.net
32blackholes.uceb.org (union of all results)
28maxim.blackholes.us
28relays.visi.com
28hil.habeas.com
27nigeria.blackholes.us
26olm.blackholes.us
26exemptions.ahbl.org (not a blacklist!)
25swbell.blackholes.us
24blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
23dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
20broadwing.blackholes.us
17epoch.blackholes.us
17blackholes.uceb.org (result 127.0.0.3 = spam source)
17dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
14a2000.blackholes.us
14satos.rbl.cluecentral.net
13blackholes.uceb.org (result 127.0.0.2 = open relay)
13sbbl.they.com
11bl.deadbeef.com
10burst.blackholes.us
9pajo.blackholes.us
9navisite.blackholes.us
9affinity.blackholes.us
9relays.bl.kundenserver.de
8no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
8dnsbl.ahbl.org (result 127.0.0.15 = open relay)
7blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
7dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
5blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
4owps.dnsbl.net.au
4spamsites.dnsbl.net.au
4omrs.dnsbl.net.au
4no-more-funn.moensted.dk (result 127.0.0.11 = repeated probes)
3dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
2ciberlynx.blackholes.us
2dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
2blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1valuenet.blackholes.us
1blackholes.uceb.org (result 127.0.0.4 = spam source network)
1blackholes.uceb.org (result 127.0.0.6 = spam haven)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1owfs.dnsbl.net.au
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
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)
1dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)

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
33299(total number of IP addresses whose names were tested, including 403 at SDSC)
13639(union of all domain zones)
10129abuse.rfc-ignorant.org
6958rddn.dnsbl.net.au
4441whois.rfc-ignorant.org (union of all results)
2769whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1672whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
772bulk.rhs.mailpolice.com
690rhsbl.ahbl.org
310bl.deadbeef.com
71blackhole.securitysage.com
32postmaster.rfc-ignorant.org
18dsn.rfc-ignorant.org (zone not intended for this use)
8porn.rhs.mailpolice.com
3bogusmx.rfc-ignorant.org

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

HitsDNS Zone
25682(total number of domains tested, including 280 at SDSC)
9717(union of all domain zones)
5497whois.rfc-ignorant.org (union of all results)
5079whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2349abuse.rfc-ignorant.org
1340bulk.rhs.mailpolice.com
1002postmaster.rfc-ignorant.org
892rhsbl.ahbl.org
795dsn.rfc-ignorant.org
418whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
281bl.deadbeef.com
248bogusmx.rfc-ignorant.org
171blackhole.securitysage.com
71porn.rhs.mailpolice.com
63ex.dnsbl.org (union of all results)
62ex.dnsbl.org (result 127.0.0.2 = spamsites)
36rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
36rhsbl.sorbs.net (union of all results)
29rddn.dnsbl.net.au (zone not intended for this use)
3rhsbl.sorbs.net (result 127.0.0.12 = domain does not send mail)
1ex.dnsbl.org (result 127.0.0.3 = spam source)
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 18 September 2004.