Blacklists Compared

6 September 2003

[ 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 query.bondedsender.org zone because it is not a blacklist, and because they are too aggressive to be widely useful the xbl.selwerd.cx and block.blars.org zones are also excluded.

HitsDNS Zone
14100(total number of IP addresses tested, including 399 at SDSC)
9826(union of most IP zones)
7638xbl.selwerd.cx
4476t1.bl.reynolds.net.au
4407blackholes.five-ten-sg.com (union of all results)
4117block.blars.org
3415blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
3385psbl.surriel.com
3188wpb.bl.reynolds.net.au
3166blackholes.easynet.nl
2996no-more-funn.moensted.dk (union of all results)
2870dnsbl.njabl.org (union of all results)
2843cbl.abuseat.org
2814dnsbl.sorbs.net (union of all results)
2717unconfirmed.dsbl.org
2438dsbl.bl.reynolds.net.au
2438list.dsbl.org
2354dynablock.easynet.nl (result 127.0.0.2 = dialup)
2354dynablock.easynet.nl (union of all results)
2002proxies.blackholes.easynet.nl
1773bl.spamcop.net
1762blackhole.compu.net
1739cn-kr.blackholes.us (union of all results)
1634dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1580no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
1448dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1376dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1291proxies.relays.monkeys.com (result 127.0.0.2 = open proxy)
1291proxies.relays.monkeys.com (union of all results)
1138spews.bl.reynolds.net.au
1074ipwhois.rfc-ignorant.org
1011cn-kr.blackholes.us (result 127.0.0.2 = China)
1011china.blackholes.us
977unsure.nether.net
949sbl.spamhaus.org
926pss.spambusters.org.ar
858no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
735l2.spews.dnsbl.sorbs.net
728cn-kr.blackholes.us (result 127.0.0.3 = Korea)
728korea.blackholes.us
727relays.visi.com
711korea.services.net
699blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
645pdl.bl.reynolds.net.au
635dialups.visi.com
620l1.spews.dnsbl.sorbs.net
607dnsbl.njabl.org (result 127.0.0.4 = spam source)
537opm.blitzed.org
503ybl.megacity.org
493spamsources.fabel.dk
484blacklist.spambag.org
439blackholes.intersil.net
434dnsbl.delink.net
413cw.blackholes.us
358spam.wytnij.to
331dnsbl.njabl.org (result 127.0.0.3 = dialup)
321dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
303brazil.blackholes.us
300spamguard.leadmon.net (union of all results)
298dnsbl.njabl.org (result 127.0.0.2 = source or relay)
285spamguard.leadmon.net (result 127.0.0.2 = dialup)
277dnsbl.sorbs.net (result 127.0.0.10 = dialup)
274lbl.lagengymnastik.dk
268no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
263comcast.blackholes.us
255taiwan.blackholes.us
248sbbl.they.com
240rr.blackholes.us
233level3.blackholes.us
228multihop.dsbl.org
217dnsbl.sorbs.net (result 127.0.0.6 = spam source)
213blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
211relays.ordb.org
192no-more-funn.moensted.dk (result 127.0.0.9 = misc)
178relays.bl.kundenserver.de
162dnsbl.antispam.or.id
158work.drbl.croco.net
157verio.blackholes.us
150hongkong.blackholes.us
147japan.blackholes.us
144qwest.blackholes.us
139mail-abuse.blacklist.jippg.org
129relaywatcher.n13mbl.com
1283y.spam.mrs.kithrup.com
127osrs.bl.reynolds.net.au
125query.bondedsender.org (not a blacklist!)
122blackholes.brainerd.net
121spam.shri.net
107argentina.blackholes.us
96mexico.blackholes.us
94internap.blackholes.us
92bellsouth.blackholes.us
86ohps.bl.reynolds.net.au
81xo.blackholes.us
81rmst.bl.reynolds.net.au
79relays.nether.net
78probes.bl.reynolds.net.au
76charter.blackholes.us
74turkey.blackholes.us
74tr.countries.nerd.dk
72osps.bl.reynolds.net.au
68russia.blackholes.us
65blackholes.uceb.org (union of all results)
62vox.schpider.com
61infolink.blackholes.us
55flowgoaway.com
51singapore.blackholes.us
50malaysia.blackholes.us
45dun.dnsrbl.net
44he.blackholes.us
44no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
40dialup.blacklist.jippg.org (union of all results)
39interbusiness.blackholes.us
39dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
37inflow.blackholes.us
35above.blackholes.us
35no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
34wanadoo-fr.blackholes.us
34rogers.blackholes.us
32blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
31blackholes.uceb.org (result 127.0.0.2 = open relay)
29nigeria.blackholes.us
29covad.blackholes.us
28satos.rbl.cluecentral.net
27dev.null.dk
27ph.rbl.cluecentral.net
26rackspace.blackholes.us
26blackholes.uceb.org (result 127.0.0.3 = spam source)
23eli.blackholes.us
22cybercon.blackholes.us
22spam.exsilia.net (union of all results)
21thailand.blackholes.us
21bl.deadbeef.com
18telstra.blackholes.us
18blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
18spam.exsilia.net (result 127.0.0.2 = spam source)
16pajo.blackholes.us
16broadwing.blackholes.us
13spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
13no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
13blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
13blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
12yipes.blackholes.us
12a2000.blackholes.us
11lauderdale.blackholes.us
11affinity.blackholes.us
10epoch.blackholes.us
9dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
8blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
7olm.blackholes.us
7maxim.blackholes.us
7owps.bl.reynolds.net.au
7spamsites.bl.reynolds.net.au
6no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
4spam.exsilia.net (result 127.0.0.3 = virus source)
3burst.blackholes.us
3t3direct.bl.reynolds.net.au
3blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
2spamsources.yamta.org (result 127.0.0.2 = spam source)
2ciberlynx.blackholes.us
2dnsbl.sorbs.net (result 127.0.0.5 = open relay)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
1navisite.blackholes.us
1dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
1omrs.bl.reynolds.net.au
1dnsbl.njabl.org (result 127.0.0.5 = relay output)
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
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. The blackhole.compu.net zone "is primarily for hosts which were not blocked by other blackhole sites and spammed compu.net."

Survey results for all known public domain-name-based DNS blacklists. Lookups were done on the domain names of connecting IP addresses.

HitsDNS Zone
14100(total number of IP addresses whose names were tested, including 399 at SDSC)
5192(union of all domain zones)
2769abuse.rfc-ignorant.org
1994rddn.bl.reynolds.net.au
1000whois.rfc-ignorant.org (union of all results)
586endn.bl.reynolds.net.au
581spamdomains.blackholes.easynet.nl
579whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
570bulk.rhs.mailpolice.com
422whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
168blackhole.securitysage.com
144bl.deadbeef.com
106porn.rhs.mailpolice.com
25dsn.rfc-ignorant.org (zone not intended for this use)
9postmaster.rfc-ignorant.org

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

HitsDNS Zone
14914(total number of domains tested, including 217 at SDSC)
4233(union of all domain zones)
1432whois.rfc-ignorant.org (union of all results)
1202whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1192abuse.rfc-ignorant.org
1007bulk.rhs.mailpolice.com
946endn.bl.reynolds.net.au
920spamdomains.blackholes.easynet.nl
523postmaster.rfc-ignorant.org
448dsn.rfc-ignorant.org
230whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
180bl.deadbeef.com
126blackhole.securitysage.com
104porn.rhs.mailpolice.com
21rddn.bl.reynolds.net.au (zone not intended for this use)
10bandwidth-pigs.monkeys.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 14 September 2003.