Blacklists Compared

13 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
14037(total number of IP addresses tested, including 382 at SDSC)
10031(union of most IP zones)
7711xbl.selwerd.cx
5442t1.bl.reynolds.net.au
4622blackholes.five-ten-sg.com (union of all results)
4249block.blars.org
3580blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
2995no-more-funn.moensted.dk (union of all results)
2989wpb.bl.reynolds.net.au
2911blackholes.easynet.nl
2830cbl.abuseat.org
2748dnsbl.njabl.org (union of all results)
2718unconfirmed.dsbl.org
2716psbl.surriel.com
2573dynablock.easynet.nl (result 127.0.0.2 = dialup)
2573dynablock.easynet.nl (union of all results)
2424dsbl.bl.reynolds.net.au
2424list.dsbl.org
1902wdl.bl.reynolds.net.au
1853proxies.blackholes.easynet.nl
1808blackhole.compu.net
1797cn-kr.blackholes.us (union of all results)
1673bl.spamcop.net
1584no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
1518dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1157ipwhois.rfc-ignorant.org
1113spews.bl.reynolds.net.au
1110cn-kr.blackholes.us (result 127.0.0.2 = China)
1110china.blackholes.us
1096proxies.relays.monkeys.com (result 127.0.0.2 = open proxy)
1096proxies.relays.monkeys.com (union of all results)
1090pss.spambusters.org.ar
1051dnsbl.sorbs.net (union of all results)
986sbl.spamhaus.org
858unsure.nether.net
855no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
771relays.visi.com
741blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
711pdl.bl.reynolds.net.au
687cn-kr.blackholes.us (result 127.0.0.3 = Korea)
687korea.blackholes.us
680korea.services.net
649spamsources.fabel.dk
636ohps.bl.reynolds.net.au
562ybl.megacity.org
531dnsbl.njabl.org (result 127.0.0.4 = spam source)
520dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
509dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
466cw.blackholes.us
454blackholes.intersil.net
440blacklist.spambag.org
431dialups.visi.com
427opm.blitzed.org
378dnsbl.njabl.org (result 127.0.0.3 = dialup)
372spam.wytnij.to
322dnsbl.njabl.org (result 127.0.0.2 = source or relay)
307lbl.lagengymnastik.dk
294spamguard.leadmon.net (union of all results)
292brazil.blackholes.us
275spamguard.leadmon.net (result 127.0.0.2 = dialup)
267no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
253level3.blackholes.us
252relays.ordb.org
235multihop.dsbl.org
233blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
230comcast.blackholes.us
227rr.blackholes.us
226taiwan.blackholes.us
219sbbl.they.com
216l2.spews.dnsbl.sorbs.net
203l1.spews.dnsbl.sorbs.net
192work.drbl.croco.net
181no-more-funn.moensted.dk (result 127.0.0.9 = misc)
169verio.blackholes.us
153osrs.bl.reynolds.net.au
142dnsbl.sorbs.net (result 127.0.0.10 = dialup)
142mail-abuse.blacklist.jippg.org
141qwest.blackholes.us
141relays.bl.kundenserver.de
1393y.spam.mrs.kithrup.com
135japan.blackholes.us
134argentina.blackholes.us
124query.bondedsender.org (not a blacklist!)
122hongkong.blackholes.us
113blackholes.brainerd.net
104spam.shri.net
104relays.nether.net
103mexico.blackholes.us
102internap.blackholes.us
98charter.blackholes.us
89dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
85xo.blackholes.us
84osps.bl.reynolds.net.au
80probes.bl.reynolds.net.au
76dnsbl.sorbs.net (result 127.0.0.6 = spam source)
76rmst.bl.reynolds.net.au
74bellsouth.blackholes.us
72turkey.blackholes.us
72tr.countries.nerd.dk
70blackholes.uceb.org (union of all results)
68dnsbl.antispam.or.id
65russia.blackholes.us
55flowgoaway.com
52infolink.blackholes.us
51singapore.blackholes.us
50no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
47interbusiness.blackholes.us
47he.blackholes.us
45dun.dnsrbl.net
43wanadoo-fr.blackholes.us
39inflow.blackholes.us
39no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
38dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
38satos.rbl.cluecentral.net
38dialup.blacklist.jippg.org (union of all results)
37nigeria.blackholes.us
34blackholes.uceb.org (result 127.0.0.2 = open relay)
32rackspace.blackholes.us
30above.blackholes.us
29malaysia.blackholes.us
28blackholes.uceb.org (result 127.0.0.3 = spam source)
27covad.blackholes.us
27dev.null.dk
25thailand.blackholes.us
25ph.rbl.cluecentral.net
24spam.exsilia.net (union of all results)
23spam.exsilia.net (result 127.0.0.2 = spam source)
22cybercon.blackholes.us
22blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
20rogers.blackholes.us
19broadwing.blackholes.us
19bl.deadbeef.com
18telstra.blackholes.us
17spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
16eli.blackholes.us
16blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
15blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
14affinity.blackholes.us
12yipes.blackholes.us
12pajo.blackholes.us
12blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
10epoch.blackholes.us
10no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
9no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
8t3direct.bl.reynolds.net.au
7olm.blackholes.us
7blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
7owps.bl.reynolds.net.au
6burst.blackholes.us
6dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
5spamsites.bl.reynolds.net.au
4spamsources.yamta.org (result 127.0.0.2 = spam source)
4maxim.blackholes.us
3a2000.blackholes.us
3blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
2navisite.blackholes.us
2lauderdale.blackholes.us
2omrs.bl.reynolds.net.au
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
1blackholes.uceb.org (result 127.0.0.4 = spam source network)
1owfs.bl.reynolds.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1spam.exsilia.net (result 127.0.0.3 = virus source)

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
14037(total number of IP addresses whose names were tested, including 382 at SDSC)
5238(union of all domain zones)
2836abuse.rfc-ignorant.org
1991rddn.bl.reynolds.net.au
1022whois.rfc-ignorant.org (union of all results)
653whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
640bulk.rhs.mailpolice.com
530endn.bl.reynolds.net.au
529spamdomains.blackholes.easynet.nl
371whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
157blackhole.securitysage.com
146bl.deadbeef.com
87porn.rhs.mailpolice.com
19dsn.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
12564(total number of domains tested, including 205 at SDSC)
3754(union of all domain zones)
1255whois.rfc-ignorant.org (union of all results)
1047whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1015abuse.rfc-ignorant.org
990bulk.rhs.mailpolice.com
780endn.bl.reynolds.net.au
754spamdomains.blackholes.easynet.nl
493postmaster.rfc-ignorant.org
429dsn.rfc-ignorant.org
208whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
150blackhole.securitysage.com
138bl.deadbeef.com
95porn.rhs.mailpolice.com
21rddn.bl.reynolds.net.au (zone not intended for this use)
9bandwidth-pigs.monkeys.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 20 September 2003.