Blacklists Compared

16 August 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 xbl.selwerd.cx and block.blars.org zones zone because they are too aggressive to be widely useful, and the blocktest.relays.osirusoft.com and query.bondedsender.org zones are also excluded because they are not blacklists.

HitsDNS Zone
11148(total number of IP addresses tested, including 389 at SDSC)
7681(union of most IP zones)
6016xbl.selwerd.cx
3850t1.bl.reynolds.net.au
3527block.blars.org
3490blackholes.five-ten-sg.com (union of all results)
3014dnsbl.sorbs.net (union of all results)
2837wpb.bl.reynolds.net.au
2834blackholes.easynet.nl
2670psbl.surriel.com
2640dnsbl.njabl.org (union of all results)
2489no-more-funn.moensted.dk (union of all results)
2461blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
2271unconfirmed.dsbl.org
2041dsbl.bl.reynolds.net.au
2041list.dsbl.org
1933cbl.abuseat.org
1773proxies.blackholes.easynet.nl
1521dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1480cn-kr.blackholes.us (union of all results)
1433blackhole.compu.net
1372no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
1330dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1309l2.spews.dnsbl.sorbs.net
1301dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1296bl.spamcop.net
1257proxies.relays.monkeys.com (result 127.0.0.2 = open proxy)
1257proxies.relays.monkeys.com (union of all results)
983l1.spews.dnsbl.sorbs.net
980spews.bl.reynolds.net.au
963ipwhois.rfc-ignorant.org
832sbl.spamhaus.org
788cn-kr.blackholes.us (result 127.0.0.2 = China)
788china.blackholes.us
728blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
727opm.blitzed.org
693korea.blackholes.us
692cn-kr.blackholes.us (result 127.0.0.3 = Korea)
690korea.services.net
688dynablock.easynet.nl (result 127.0.0.2 = dialup)
688dynablock.easynet.nl (union of all results)
666no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
630unsure.nether.net
601dnsbl.njabl.org (result 127.0.0.4 = spam source)
525spamsources.fabel.dk
511ybl.megacity.org
502blacklist.spambag.org
502blackholes.intersil.net
465pdl.bl.reynolds.net.au
460cw.blackholes.us
452dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
380relays.osirusoft.com (union of all results)
370relaywatcher.n13mbl.com
358relays.visi.com
330wdl.bl.reynolds.net.au
324dnsbl.delink.net
297spam.wytnij.to
276dnsbl.njabl.org (result 127.0.0.2 = source or relay)
254level3.blackholes.us
252dnsbl.sorbs.net (result 127.0.0.6 = spam source)
249dnsbl.njabl.org (result 127.0.0.3 = dialup)
233blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
226no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
207lbl.lagengymnastik.dk
204relays.osirusoft.com (result 127.0.0.9 = open proxy)
202socks.relays.osirusoft.com
202multihop.dsbl.org
200sbbl.they.com
200work.drbl.croco.net
194brazil.blackholes.us
194relays.ordb.org
192spamguard.leadmon.net (union of all results)
183dnsbl.sorbs.net (result 127.0.0.10 = dialup)
182spamguard.leadmon.net (result 127.0.0.2 = dialup)
178spews.relays.osirusoft.com
158taiwan.blackholes.us
152mail-abuse.blacklist.jippg.org
150comcast.blackholes.us
148spam.shri.net
145dialups.visi.com
136osrs.bl.reynolds.net.au
134relays.osirusoft.com (result 127.0.0.4 = spam source)
118qwest.blackholes.us
118dnsbl.antispam.or.id
117verio.blackholes.us
117rr.blackholes.us
1163y.spam.mrs.kithrup.com
115query.bondedsender.org (not a blacklist!)
110no-more-funn.moensted.dk (result 127.0.0.9 = misc)
107rmst.bl.reynolds.net.au
107relays.bl.kundenserver.de
97internap.blackholes.us
85blackholes.brainerd.net
83osps.bl.reynolds.net.au
82xo.blackholes.us
77ohps.bl.reynolds.net.au
74relays.nether.net
73argentina.blackholes.us
71japan.blackholes.us
70charter.blackholes.us
68blackholes.uceb.org (union of all results)
67mexico.blackholes.us
67probes.bl.reynolds.net.au
66infolink.blackholes.us
65hongkong.blackholes.us
58no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
58flowgoaway.com
53russia.blackholes.us
50tr.countries.nerd.dk
49turkey.blackholes.us
46relays.osirusoft.com (result 127.0.0.2 = open relay)
46inputs.relays.osirusoft.com
43dev.null.dk
43dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
43dialup.blacklist.jippg.org (union of all results)
42bellsouth.blackholes.us
42blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
40vox.schpider.com
39satos.rbl.cluecentral.net
38he.blackholes.us
37inflow.blackholes.us
35blackholes.uceb.org (result 127.0.0.3 = spam source)
35dun.dnsrbl.net
29above.blackholes.us
27no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
26nigeria.blackholes.us
25singapore.blackholes.us
25blocktest.relays.osirusoft.com (not a blacklist!)
23rackspace.blackholes.us
23blackholes.uceb.org (result 127.0.0.2 = open relay)
23no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
22interbusiness.blackholes.us
22spam.exsilia.net (union of all results)
22spamsources.relays.osirusoft.com (union of all results)
21spamsources.relays.osirusoft.com (result 127.0.0.4 = spam source)
20rogers.blackholes.us
20cybercon.blackholes.us
19thailand.blackholes.us
19spam.exsilia.net (result 127.0.0.2 = spam source)
19bl.deadbeef.com
16wanadoo-fr.blackholes.us
16telstra.blackholes.us
15ph.rbl.cluecentral.net
13owps.bl.reynolds.net.au
13blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
12malaysia.blackholes.us
11eli.blackholes.us
11broadwing.blackholes.us
10yipes.blackholes.us
10blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
10dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
10blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
9maxim.blackholes.us
9spamsites.bl.reynolds.net.au
9spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
8covad.blackholes.us
7spamsites.relays.osirusoft.com
7relays.osirusoft.com (result 127.0.0.6 = spamsites)
7no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
6pajo.blackholes.us
6epoch.blackholes.us
6affinity.blackholes.us
6proxy.relays.osirusoft.com
5olm.blackholes.us
5a2000.blackholes.us
5dialups.relays.osirusoft.com (result 127.0.0.3 = dialup)
5dialups.relays.osirusoft.com (union of all results)
4dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
3navisite.blackholes.us
3omrs.bl.reynolds.net.au
3relays.osirusoft.com (result 127.0.0.3 = dialup)
3spam.exsilia.net (result 127.0.0.3 = virus source)
2burst.blackholes.us
2blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1spamsources.relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
1relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
1dnsbl.njabl.org (result 127.0.0.5 = relay output)
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)

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
11148(total number of IP addresses whose names were tested, including 389 at SDSC)
3877(union of all domain zones)
2063abuse.rfc-ignorant.org
1249rddn.bl.reynolds.net.au
626endn.bl.reynolds.net.au
625whois.rfc-ignorant.org (union of all results)
624spamdomains.blackholes.easynet.nl
555bulk.rhs.mailpolice.com
325whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
300whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
70bl.deadbeef.com
63porn.rhs.mailpolice.com
33dsn.rfc-ignorant.org (zone not intended for this use)
15postmaster.rfc-ignorant.org
1bandwidth-pigs.monkeys.com

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

HitsDNS Zone
6932(total number of domains tested, including 203 at SDSC)
2235(union of all domain zones)
798endn.bl.reynolds.net.au
760spamdomains.blackholes.easynet.nl
706bulk.rhs.mailpolice.com
608abuse.rfc-ignorant.org
465whois.rfc-ignorant.org (union of all results)
353whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
344postmaster.rfc-ignorant.org
303dsn.rfc-ignorant.org
112whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
62porn.rhs.mailpolice.com
33rddn.bl.reynolds.net.au (zone not intended for this use)
31ex.dnsbl.org (union of all results)
30bl.deadbeef.com
28ex.dnsbl.org (result 127.0.0.2 = spamsites)
7bandwidth-pigs.monkeys.com
4in.dnsbl.org (union of all results)
3ex.dnsbl.org (result 127.0.0.3 = spam source)
3in.dnsbl.org (result 127.0.0.6 = unconfirmed opt-in)
1in.dnsbl.org (result 127.0.0.2 = spam source)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 22 August 2003.