Blacklists Compared

29 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
27940(total number of IP addresses tested, including 367 at SDSC)
22712(union of most IP zones)
16607t1.dnsbl.net.au
14825block.blars.org
14348blackholes.five-ten-sg.com (union of all results)
13556blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
12767sbl-xbl.spamhaus.org (union of all results)
11966dnsbl.sorbs.net (union of all results)
11044xbl.spamhaus.org (union of all results)
11022cbl.abuseat.org
11004xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11004sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
8319dynablock.njabl.org
7837dnsbl.sorbs.net (result 127.0.0.10 = dialup)
7455unconfirmed.dsbl.org
7321dsbl.dnsbl.net.au
7321list.dsbl.org
6947no-more-funn.moensted.dk (union of all results)
4900cn-kr.blackholes.us (union of all results)
4739sbl.csma.biz
4473psbl.surriel.com
4297dnsbl.njabl.org (union of all results)
3888ipwhois.rfc-ignorant.org
3663bl.spamcop.net
3520l2.spews.dnsbl.sorbs.net
3213wpbl.dnsbl.net.au
3146dnsbl.ahbl.org (union of all results)
3027l1.spews.dnsbl.sorbs.net
3012no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
3011spews.dnsbl.net.au
2745rmst.dnsbl.net.au
2489cn-kr.blackholes.us (result 127.0.0.2 = China)
2489china.blackholes.us
2488dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2411cn-kr.blackholes.us (result 127.0.0.3 = Korea)
2411korea.blackholes.us
2320korea.services.net
2199blacklist.spambag.org
2097bl.csma.biz
2046pdl.blackholes.us
1976no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1882sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1882dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1882sbl.spamhaus.org
1843dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1609spam.wytnij.to
1536dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1492spamsources.fabel.dk
1291dnsbl.ahbl.org (result 127.0.0.4 = spam source)
1289dnsbl.njabl.org (result 127.0.0.3 = dialup)
1239dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
1181dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1128xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1128sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1127opm.blitzed.org
1028comcast.blackholes.us
975no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
943ricn.dnsbl.net.au
923work.drbl.croco.net
883relays.visi.com
863sbbl.they.com
845brazil.blackholes.us
759spamguard.leadmon.net (union of all results)
740no-more-funn.moensted.dk (result 127.0.0.9 = misc)
715ybl.megacity.org
708probes.dnsbl.net.au
659spamguard.leadmon.net (result 127.0.0.2 = dialup)
602unsure.nether.net
530rr.blackholes.us
529cw.blackholes.us
519level3.blackholes.us
458blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
453japan.blackholes.us
406taiwan.blackholes.us
406rbl.rangers.eu.org (union of all results)
377blackholes.intersil.net
358dnsbl.njabl.org (result 127.0.0.4 = spam source)
314charter.blackholes.us
304dnsbl.antispam.or.id
271no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
264mexico.blackholes.us
256blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
214rbl.rangers.eu.org (result 127.0.0.4 = dialup)
203russia.blackholes.us
191tr.countries.nerd.dk
190turkey.blackholes.us
188dnsbl.njabl.org (result 127.0.0.2 = source or relay)
187qwest.blackholes.us
186wanadoo-fr.blackholes.us
185hongkong.blackholes.us
172relays.ordb.org
161osps.dnsbl.net.au
148verio.blackholes.us
145interbusiness.blackholes.us
142flowgoaway.com
141argentina.blackholes.us
139singapore.blackholes.us
139dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
137ohps.dnsbl.net.au
137dun.dnsrbl.net
1343y.spam.mrs.kithrup.com
124spamsources.yamta.org (result 127.0.0.2 = spam source)
120infolink.blackholes.us
115multihop.dsbl.org
100spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
98dnsbl.sorbs.net (result 127.0.0.5 = open relay)
96dialup.blacklist.jippg.org (union of all results)
95dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
92xo.blackholes.us
80malaysia.blackholes.us
79rbl.rangers.eu.org (result 127.0.0.3 = spam haven)
79mail-abuse.blacklist.jippg.org
77hil.habeas.com
75bellsouth.blackholes.us
74rbl.rangers.eu.org (result 127.0.0.2 = spam source)
71internap.blackholes.us
71ph.rbl.cluecentral.net
62telstra.blackholes.us
61osrs.dnsbl.net.au
60relays.nether.net
58above.blackholes.us
57dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
56he.blackholes.us
47swbell.blackholes.us
45rogers.blackholes.us
45inflow.blackholes.us
43thailand.blackholes.us
38rdts.dnsbl.net.au
36blackholes.brainerd.net
35yipes.blackholes.us
35covad.blackholes.us
33cybercon.blackholes.us
29blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
26nigeria.blackholes.us
23eli.blackholes.us
22a2000.blackholes.us
22blackholes.uceb.org (union of all results)
21broadwing.blackholes.us
21affinity.blackholes.us
21blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
19rbl.rangers.eu.org (result 127.0.0.10 = virus notices)
19exemptions.ahbl.org (not a blacklist!)
18query.bondedsender.org (not a blacklist!)
16rackspace.blackholes.us
16epoch.blackholes.us
16rbl.rangers.eu.org (result 127.0.0.1 = misc)
16blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
13satos.rbl.cluecentral.net
12blackholes.uceb.org (result 127.0.0.3 = spam source)
12dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
10blackholes.uceb.org (result 127.0.0.2 = open relay)
10dnsbl.ahbl.org (result 127.0.0.15 = open relay)
9olm.blackholes.us
9blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
9bl.deadbeef.com
8dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
7pajo.blackholes.us
7navisite.blackholes.us
7owps.dnsbl.net.au
7relays.bl.kundenserver.de
6maxim.blackholes.us
5burst.blackholes.us
5no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
4spam.dnsrbl.net
3rbl.rangers.eu.org (result 127.0.0.5 = relay output)
3dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1ciberlynx.blackholes.us
1rbl.rangers.eu.org (result 127.0.0.9 = worm source)
1spamsites.dnsbl.net.au
1omrs.dnsbl.net.au
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
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
27940(total number of IP addresses whose names were tested, including 367 at SDSC)
12763(union of all domain zones)
9262abuse.rfc-ignorant.org
7198rddn.dnsbl.net.au
3908whois.rfc-ignorant.org (union of all results)
2583whois.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)
1002bulk.rhs.mailpolice.com
595rhsbl.ahbl.org
340blackhole.securitysage.com
207bl.deadbeef.com
46porn.rhs.mailpolice.com
20postmaster.rfc-ignorant.org
17dsn.rfc-ignorant.org (zone not intended for this use)
1bogusmx.rfc-ignorant.org

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

HitsDNS Zone
23202(total number of domains tested, including 368 at SDSC)
7381(union of all domain zones)
3458whois.rfc-ignorant.org (union of all results)
2958whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2240abuse.rfc-ignorant.org
1423bulk.rhs.mailpolice.com
936postmaster.rfc-ignorant.org
887rhsbl.ahbl.org
615dsn.rfc-ignorant.org
500whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
440blackhole.securitysage.com
303bogusmx.rfc-ignorant.org
174bl.deadbeef.com
68porn.rhs.mailpolice.com
52ex.dnsbl.org (union of all results)
48ex.dnsbl.org (result 127.0.0.2 = spamsites)
28rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
28rddn.dnsbl.net.au (zone not intended for this use)
28rhsbl.sorbs.net (union of all results)
4ex.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 17 June 2004.