Blacklists Compared

14 June 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
11159(total number of IP addresses tested, including 418 at SDSC)
7596(union of most IP zones)
6011xbl.selwerd.cx
3859t1.bl.reynolds.net.au
3274blackholes.five-ten-sg.com (union of all results)
3154block.blars.org
2976blackholes.easynet.nl
2772wpb.bl.reynolds.net.au
2682relays.osirusoft.com (union of all results)
2527no-more-funn.moensted.dk (union of all results)
2443dnsbl.njabl.org (union of all results)
2412unconfirmed.dsbl.org
2169dsbl.bl.reynolds.net.au
2169list.dsbl.org
2130blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
2036dnsbl.sorbs.net (union of all results)
1895proxies.blackholes.easynet.nl
1618dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1594bl.spamcop.net
1489dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1438proxies.relays.monkeys.com (result 127.0.0.2 = open proxy)
1438proxies.relays.monkeys.com (union of all results)
1414dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1389no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
1351cn-kr.blackholes.us (union of all results)
1235relays.osirusoft.com (result 127.0.0.9 = open proxy)
1231socks.relays.osirusoft.com
1176blackhole.compu.net
1065psbl.surriel.com
931ipwhois.rfc-ignorant.org
927spews.bl.reynolds.net.au
927spews.relays.osirusoft.com
858blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
827relays.osirusoft.com (result 127.0.0.4 = spam source)
794sbl.spamhaus.org
791spamhaus.relays.osirusoft.com
790rddn.bl.reynolds.net.au
787cn-kr.blackholes.us (result 127.0.0.2 = China)
787china.blackholes.us
768blocktest.relays.osirusoft.com (not a blacklist!)
751unsure.nether.net
717relays.osirusoft.com (result 127.0.0.6 = spamsites)
661no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
605blacklist.spambag.org
576dnsbl.njabl.org (result 127.0.0.4 = spam source)
564cn-kr.blackholes.us (result 127.0.0.3 = Korea)
564korea.blackholes.us
563opm.blitzed.org
556korea.services.net
556spamsources.fabel.dk
548cw.blackholes.us
541ybl.megacity.org
524blackholes.intersil.net
451work.drbl.croco.net
444dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
390sbbl.they.com
386spamguard.leadmon.net (union of all results)
376dnsbl.delink.net
362pdl.bl.reynolds.net.au
333dynablock.easynet.nl (result 127.0.0.2 = dialup)
333wdl.bl.reynolds.net.au
333dynablock.easynet.nl (union of all results)
315spam.wytnij.to
298dnsbl.njabl.org (result 127.0.0.2 = source or relay)
297level3.blackholes.us
288relays.osirusoft.com (result 127.0.0.2 = open relay)
288inputs.relays.osirusoft.com
271no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
256mail-abuse.blacklist.jippg.org
237spamguard.leadmon.net (result 127.0.0.2 = dialup)
205multihop.dsbl.org
204relays.ordb.org
198blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
194lbl.lagengymnastik.dk
185blackholes.uceb.org (union of all results)
181taiwan.blackholes.us
167brazil.blackholes.us
163spamsources.relays.osirusoft.com (union of all results)
156dnsbl.njabl.org (result 127.0.0.3 = dialup)
153spamsources.relays.osirusoft.com (result 127.0.0.4 = spam source)
150dialups.visi.com
149comcast.blackholes.us
139spamguard.leadmon.net (result 127.0.0.3 = spam source)
137query.bondedsender.org (not a blacklist!)
137dialups.relays.osirusoft.com (union of all results)
136verio.blackholes.us
126osrs.bl.reynolds.net.au
124dialups.relays.osirusoft.com (result 127.0.0.3 = dialup)
123ohps.bl.reynolds.net.au
122relays.bl.kundenserver.de
119relaywatcher.n13mbl.com
114bl.deadbeef.com
108rr.blackholes.us
103relays.nether.net
100blackholes.uceb.org (result 127.0.0.3 = spam source)
96internap.blackholes.us
95osps.bl.reynolds.net.au
89no-more-funn.moensted.dk (result 127.0.0.9 = misc)
85dnsbl.sorbs.net (result 127.0.0.6 = spam source)
85flowgoaway.com
82japan.blackholes.us
81xo.blackholes.us
77rmst.bl.reynolds.net.au
72qwest.blackholes.us
70relays.osirusoft.com (result 127.0.0.3 = dialup)
69charter.blackholes.us
68no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
63rackspace.blackholes.us
61blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
59bl.deadbeef.com
57blackholes.uceb.org (result 127.0.0.2 = open relay)
56hongkong.blackholes.us
56argentina.blackholes.us
54vox.schpider.com
52blackholes.brainerd.net
46probes.bl.reynolds.net.au
45inflow.blackholes.us
44russia.blackholes.us
40rogers.blackholes.us
38singapore.blackholes.us
38dun.dnsrbl.net
36interbusiness.blackholes.us
36bellsouth.blackholes.us
32tr.countries.nerd.dk
30infolink.blackholes.us
30no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
27he.blackholes.us
27blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
26eli.blackholes.us
25above.blackholes.us
24proxy.relays.osirusoft.com
24dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
24dialup.blacklist.jippg.org (union of all results)
23nigeria.blackholes.us
22cybercon.blackholes.us
22covad.blackholes.us
21wanadoo-fr.blackholes.us
18thailand.blackholes.us
16malaysia.blackholes.us
16a2000.blackholes.us
16spam.exsilia.net (union of all results)
15ph.rbl.cluecentral.net
14spam.exsilia.net (result 127.0.0.2 = spam source)
13dialups.relays.osirusoft.com (result 127.0.0.4 = no reverse DNS)
13no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
13blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
12yipes.blackholes.us
12telstra.blackholes.us
12broadwing.blackholes.us
12blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
10valuenet.blackholes.us
10pajo.blackholes.us
10spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
93y.spam.mrs.kithrup.com
8olm.blackholes.us
8dev.null.dk
7maxim.blackholes.us
6affinity.blackholes.us
6owps.bl.reynolds.net.au
6no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
5epoch.blackholes.us
5spamsources.relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
5spamsources.relays.osirusoft.com (result 127.0.0.6 = spamhaus)
4dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
4omrs.bl.reynolds.net.au
4relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
3navisite.blackholes.us
3dnsbl.sorbs.net (result 127.0.0.5 = open relay)
2burst.blackholes.us
2blackholes.uceb.org (result 127.0.0.4 = spam source network)
2dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2spamsites.bl.reynolds.net.au
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
2spam.exsilia.net (result 127.0.0.3 = virus source)
1owfs.bl.reynolds.net.au

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
11159(total number of IP addresses whose names were tested, including 418 at SDSC)
2916(union of all domain zones)
2182abuse.rfc-ignorant.org
790rddn.bl.reynolds.net.au
604whois.rfc-ignorant.org (union of all results)
326whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
278whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
114bl.deadbeef.com
27dsn.rfc-ignorant.org (zone not intended for this use)
13postmaster.rfc-ignorant.org

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

HitsDNS Zone
7330(total number of domains tested, including 204 at SDSC)
1371(union of all domain zones)
640abuse.rfc-ignorant.org
494whois.rfc-ignorant.org (union of all results)
372whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
339postmaster.rfc-ignorant.org
317dsn.rfc-ignorant.org
122whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
40bl.deadbeef.com
32ex.dnsbl.org (union of all results)
29ex.dnsbl.org (result 127.0.0.2 = spamsites)
11rddn.bl.reynolds.net.au (zone not intended for this use)
8bandwidth-pigs.monkeys.com
3ex.dnsbl.org (result 127.0.0.3 = spam source)
3in.dnsbl.org (union of all results)
2in.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 19 June 2003.