Blacklists Compared

9 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
11488(total number of IP addresses tested, including 378 at SDSC)
8046(union of most IP zones)
6312xbl.selwerd.cx
4477t1.bl.reynolds.net.au
3534blackholes.five-ten-sg.com (union of all results)
3485block.blars.org
3367dnsbl.sorbs.net (union of all results)
3133blackholes.easynet.nl
3114wpb.bl.reynolds.net.au
2893dnsbl.njabl.org (union of all results)
2877psbl.surriel.com
2628no-more-funn.moensted.dk (union of all results)
2613unconfirmed.dsbl.org
2543blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
2389list.dsbl.org
2366dsbl.bl.reynolds.net.au
2089proxies.blackholes.easynet.nl
1977cbl.abuseat.org
1730dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1570dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1565blackhole.compu.net
1534dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1483cn-kr.blackholes.us (union of all results)
1438bl.spamcop.net
1410no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
1385l2.spews.dnsbl.sorbs.net
1361proxies.relays.monkeys.com (result 127.0.0.2 = open proxy)
1361proxies.relays.monkeys.com (union of all results)
1036l1.spews.dnsbl.sorbs.net
1035spews.bl.reynolds.net.au
992ipwhois.rfc-ignorant.org
923sbl.spamhaus.org
861cn-kr.blackholes.us (result 127.0.0.2 = China)
861china.blackholes.us
772no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
702blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
701unsure.nether.net
684dynablock.easynet.nl (result 127.0.0.2 = dialup)
684wdl.bl.reynolds.net.au
684opm.blitzed.org
684dynablock.easynet.nl (union of all results)
652pdl.bl.reynolds.net.au
622cn-kr.blackholes.us (result 127.0.0.3 = Korea)
622korea.blackholes.us
620dnsbl.njabl.org (result 127.0.0.4 = spam source)
612korea.services.net
583spamsources.fabel.dk
538dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
538blackholes.intersil.net
456relaywatcher.n13mbl.com
442cw.blackholes.us
406blacklist.spambag.org
402ybl.megacity.org
338dnsbl.delink.net
337level3.blackholes.us
319relays.osirusoft.com (union of all results)
312work.drbl.croco.net
272dnsbl.njabl.org (result 127.0.0.3 = dialup)
271dnsbl.njabl.org (result 127.0.0.2 = source or relay)
260spamguard.leadmon.net (union of all results)
259spam.wytnij.to
249sbbl.they.com
247spamguard.leadmon.net (result 127.0.0.2 = dialup)
228no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
226blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
207dialups.visi.com
200comcast.blackholes.us
200spam.shri.net
200lbl.lagengymnastik.dk
196dnsbl.sorbs.net (result 127.0.0.6 = spam source)
196multihop.dsbl.org
189relays.ordb.org
180brazil.blackholes.us
177dnsbl.sorbs.net (result 127.0.0.10 = dialup)
163taiwan.blackholes.us
152socks.relays.osirusoft.com
152relays.osirusoft.com (result 127.0.0.9 = open proxy)
150mail-abuse.blacklist.jippg.org
143relays.visi.com
136verio.blackholes.us
130osrs.bl.reynolds.net.au
130dnsbl.antispam.or.id
128query.bondedsender.org (not a blacklist!)
126rr.blackholes.us
118spews.relays.osirusoft.com
118relays.osirusoft.com (result 127.0.0.4 = spam source)
111no-more-funn.moensted.dk (result 127.0.0.9 = misc)
107qwest.blackholes.us
102hongkong.blackholes.us
99argentina.blackholes.us
94relays.bl.kundenserver.de
943y.spam.mrs.kithrup.com
93japan.blackholes.us
93internap.blackholes.us
82mexico.blackholes.us
77osps.bl.reynolds.net.au
76charter.blackholes.us
76ohps.bl.reynolds.net.au
74xo.blackholes.us
72rmst.bl.reynolds.net.au
72dialups.relays.osirusoft.com (result 127.0.0.3 = dialup)
72dialups.relays.osirusoft.com (union of all results)
69relays.nether.net
66no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
64blackholes.brainerd.net
58flowgoaway.com
58blackholes.uceb.org (union of all results)
49russia.blackholes.us
49infolink.blackholes.us
48bellsouth.blackholes.us
42vox.schpider.com
41rogers.blackholes.us
40he.blackholes.us
40dialup.blacklist.jippg.org (union of all results)
39inflow.blackholes.us
39dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
38relays.osirusoft.com (result 127.0.0.3 = dialup)
38tr.countries.nerd.dk
36turkey.blackholes.us
36nigeria.blackholes.us
36dun.dnsrbl.net
36satos.rbl.cluecentral.net
33above.blackholes.us
33blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
30blackholes.uceb.org (result 127.0.0.3 = spam source)
28spam.exsilia.net (union of all results)
25singapore.blackholes.us
23wanadoo-fr.blackholes.us
23rackspace.blackholes.us
23interbusiness.blackholes.us
23no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
22spam.exsilia.net (result 127.0.0.2 = spam source)
20relays.osirusoft.com (result 127.0.0.2 = open relay)
20inputs.relays.osirusoft.com
20bl.deadbeef.com
19telstra.blackholes.us
19cybercon.blackholes.us
19blackholes.uceb.org (result 127.0.0.2 = open relay)
19ph.rbl.cluecentral.net
17probes.bl.reynolds.net.au
15yipes.blackholes.us
14covad.blackholes.us
14blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
13broadwing.blackholes.us
12thailand.blackholes.us
12malaysia.blackholes.us
12eli.blackholes.us
12blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
11spamsources.relays.osirusoft.com (result 127.0.0.4 = spam source)
11spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
11no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
11spamsources.relays.osirusoft.com (union of all results)
10maxim.blackholes.us
9owps.bl.reynolds.net.au
8pajo.blackholes.us
7blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
7no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
6olm.blackholes.us
6a2000.blackholes.us
6spam.exsilia.net (result 127.0.0.3 = virus source)
5epoch.blackholes.us
5affinity.blackholes.us
4burst.blackholes.us
4spamsites.bl.reynolds.net.au
4omrs.bl.reynolds.net.au
3blocktest.relays.osirusoft.com (not a blacklist!)
2navisite.blackholes.us
2blackholes.uceb.org (result 127.0.0.4 = spam source network)
2dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2dev.null.dk
2dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
1ciberlynx.blackholes.us
1owfs.bl.reynolds.net.au
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
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
11488(total number of IP addresses whose names were tested, including 378 at SDSC)
4268(union of all domain zones)
2197abuse.rfc-ignorant.org
1636rddn.bl.reynolds.net.au
778whois.rfc-ignorant.org (union of all results)
687spamdomains.blackholes.easynet.nl
636bulk.rhs.mailpolice.com
628endn.bl.reynolds.net.au
462whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
316whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
108porn.rhs.mailpolice.com
94bl.deadbeef.com
20dsn.rfc-ignorant.org (zone not intended for this use)
11postmaster.rfc-ignorant.org

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

HitsDNS Zone
7173(total number of domains tested, including 180 at SDSC)
2386(union of all domain zones)
820endn.bl.reynolds.net.au
802bulk.rhs.mailpolice.com
771spamdomains.blackholes.easynet.nl
644abuse.rfc-ignorant.org
518whois.rfc-ignorant.org (union of all results)
405whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
384dsn.rfc-ignorant.org
369postmaster.rfc-ignorant.org
113whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
64rddn.bl.reynolds.net.au (zone not intended for this use)
55porn.rhs.mailpolice.com
33bl.deadbeef.com
28ex.dnsbl.org (union of all results)
26ex.dnsbl.org (result 127.0.0.2 = spamsites)
7in.dnsbl.org (union of all results)
6bandwidth-pigs.monkeys.com
5in.dnsbl.org (result 127.0.0.6 = unconfirmed opt-in)
2in.dnsbl.org (result 127.0.0.2 = spam source)
2ex.dnsbl.org (result 127.0.0.3 = spam source)

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