Blacklists Compared

24 May 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
12151(total number of IP addresses tested, including 442 at SDSC)
7906(union of most IP zones)
6336xbl.selwerd.cx
3786t1.bl.reynolds.net.au
3687blackholes.five-ten-sg.com (union of all results)
3240block.blars.org
2816blackholes.easynet.nl
2793no-more-funn.moensted.dk (union of all results)
2586wpb.bl.reynolds.net.au
2547unconfirmed.dsbl.org
2451relays.osirusoft.com (union of all results)
2433blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
2285dnsbl.njabl.org (union of all results)
2259dsbl.bl.reynolds.net.au
2259list.dsbl.org
2030dnsbl.sorbs.net (union of all results)
1916bl.spamcop.net
1809proxies.blackholes.easynet.nl
1694dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1620proxies.relays.monkeys.com (union of all results)
1619proxies.relays.monkeys.com (result 127.0.0.2 = open proxy)
1566cn-kr.blackholes.us (union of all results)
1445no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
1443dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1373dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1115socks.relays.osirusoft.com
1112relays.osirusoft.com (result 127.0.0.9 = open proxy)
1055ipwhois.rfc-ignorant.org
964opm.blitzed.org
935blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
904rddn.bl.reynolds.net.au
900cn-kr.blackholes.us (result 127.0.0.2 = China)
900china.blackholes.us
863spews.bl.reynolds.net.au
853work.drbl.croco.net
843spews.relays.osirusoft.com
805no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
782relays.osirusoft.com (result 127.0.0.4 = spam source)
718spam.dnsrbl.net
715sbl.spamhaus.org
704spamhaus.relays.osirusoft.com
666cn-kr.blackholes.us (result 127.0.0.3 = Korea)
666korea.blackholes.us
652korea.services.net
615relays.osirusoft.com (result 127.0.0.6 = spamsites)
571cw.blackholes.us
570ybl.megacity.org
563blackholes.intersil.net
545spamsources.fabel.dk
470blocktest.relays.osirusoft.com (not a blacklist!)
429dnsbl.njabl.org (result 127.0.0.4 = spam source)
410blacklist.spambag.org
398dnsbl.delink.net
381pdl.bl.reynolds.net.au
327mail-abuse.blacklist.jippg.org
323spam.wytnij.to
291level3.blackholes.us
283relays.osirusoft.com (result 127.0.0.2 = relay)
283inputs.relays.osirusoft.com
281no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
274spamguard.leadmon.net (union of all results)
272sbbl.they.com
272dnsbl.njabl.org (result 127.0.0.2 = source or relay)
257lbl.lagengymnastik.dk
255spamguard.leadmon.net (result 127.0.0.2 = dialup)
237multihop.dsbl.org
230dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
218blackholes.uceb.org (union of all results)
207blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
193comcast.blackholes.us
186dynablock.easynet.nl (result 127.0.0.2 = dialup)
186wdl.bl.reynolds.net.au
186dynablock.easynet.nl (union of all results)
183rr.blackholes.us
183brazil.blackholes.us
162verio.blackholes.us
160spamsources.relays.osirusoft.com (union of all results)
155taiwan.blackholes.us
153dialups.visi.com
152osps.bl.reynolds.net.au
146spamsources.relays.osirusoft.com (result 127.0.0.4 = spam source)
139dialups.relays.osirusoft.com (union of all results)
1373y.spam.mrs.kithrup.com
135dnsbl.njabl.org (result 127.0.0.3 = dialup)
134query.bondedsender.org (not a blacklist!)
131dialups.relays.osirusoft.com (result 127.0.0.3 = dialup)
129relays.ordb.org
127relays.bl.kundenserver.de
124osrs.bl.reynolds.net.au
121no-more-funn.moensted.dk (result 127.0.0.9 = misc)
117flowgoaway.com
115ohps.bl.reynolds.net.au
115blackhole.compu.net
113blackholes.uceb.org (result 127.0.0.3 = spam source)
112dun.dnsrbl.net
110bl.deadbeef.com
103hongkong.blackholes.us
94japan.blackholes.us
93rackspace.blackholes.us
88xo.blackholes.us
85internap.blackholes.us
82no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
81relays.osirusoft.com (result 127.0.0.3 = dialup)
78vox.schpider.com
70qwest.blackholes.us
67dnsbl.sorbs.net (result 127.0.0.6 = spam source)
65blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
64rmst.bl.reynolds.net.au
60interbusiness.blackholes.us
59bl.deadbeef.com
56blackholes.uceb.org (result 127.0.0.2 = relay)
56blackholes.brainerd.net
50argentina.blackholes.us
49russia.blackholes.us
43blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
41bellsouth.blackholes.us
41tr.countries.nerd.dk
38singapore.blackholes.us
35no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
34inflow.blackholes.us
30infolink.blackholes.us
29blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
28he.blackholes.us
27wanadoo-fr.blackholes.us
26nigeria.blackholes.us
26probes.bl.reynolds.net.au
25spam.exsilia.net (union of all results)
24cybercon.blackholes.us
24above.blackholes.us
23covad.blackholes.us
20no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
19dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
19ph.rbl.cluecentral.net
19dialup.blacklist.jippg.org (union of all results)
18thailand.blackholes.us
18spam.exsilia.net (result 127.0.0.2 = spam source)
17telstra.blackholes.us
17proxy.relays.osirusoft.com
16spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
14eli.blackholes.us
12yipes.blackholes.us
12epoch.blackholes.us
12blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
11valuenet.blackholes.us
11maxim.blackholes.us
11spamsources.relays.osirusoft.com (result 127.0.0.6 = spamhaus)
9malaysia.blackholes.us
9broadwing.blackholes.us
8dialups.relays.osirusoft.com (result 127.0.0.4 = no reverse DNS)
8dev.null.dk
7pajo.blackholes.us
7blackholes.uceb.org (result 127.0.0.4 = spam source network)
7spam.exsilia.net (result 127.0.0.3 = virus source)
6burst.blackholes.us
6dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
5navisite.blackholes.us
5affinity.blackholes.us
5blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
4dnsbl.sorbs.net (result 127.0.0.5 = open relay)
4dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
4owps.bl.reynolds.net.au
4omrs.bl.reynolds.net.au
4spamsources.relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
4no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
3dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
3relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
3spamguard.leadmon.net (result 127.0.0.3 = spam source)
2olm.blackholes.us
2t3direct.bl.reynolds.net.au
2spamsites.bl.reynolds.net.au
2owfs.bl.reynolds.net.au
2spamsites.relays.osirusoft.com (result 127.0.0.6)
2proxies.exsilia.net
2spamsites.relays.osirusoft.com (union of all results)
1dnsbl.njabl.org (result 127.0.0.5 = relay output)
1proxies.relays.monkeys.com (result 127.0.0.3 = proxy output)
1blackholes.five-ten-sg.com (result 127.0.0.6 = 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. 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
12151(total number of IP addresses whose names were tested, including 442 at SDSC)
3419(union of all domain zones)
2561abuse.rfc-ignorant.org
904rddn.bl.reynolds.net.au
688whois.rfc-ignorant.org (union of all results)
403whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
285whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
110bl.deadbeef.com
12dsn.rfc-ignorant.org (zone not intended for this use)
10postmaster.rfc-ignorant.org

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

HitsDNS Zone
7136(total number of domains tested, including 204 at SDSC)
1394(union of all domain zones)
630abuse.rfc-ignorant.org
508whois.rfc-ignorant.org (union of all results)
389whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
373postmaster.rfc-ignorant.org
317dsn.rfc-ignorant.org
119whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
32bl.deadbeef.com
31ex.dnsbl.org (union of all results)
27ex.dnsbl.org (result 127.0.0.2 = spamsites)
7bandwidth-pigs.monkeys.com
6in.dnsbl.org (union of all results)
4rddn.bl.reynolds.net.au (zone not intended for this use)
4ex.dnsbl.org (result 127.0.0.3 = spam source)
3in.dnsbl.org (result 127.0.0.2 = spam source)
3in.dnsbl.org (result 127.0.0.6 = unconfirmed opt-in)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 29 May 2003.