Blacklists Compared

20 July 2002

[ Fighting Spam | Dialup Zones | Blacklists Compared | Current Blacklist Comparison ]

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 zone because it is too aggressive to be widely useful, and excludes the blocktest.relays.osirusoft.com zone because it is not a blacklist.

HitsDNS Zone
8229(total number of IP addresses tested, including 391 at SDSC)
4224(union of most IP zones)
3197xbl.selwerd.cx
1931blackholes.five-ten-sg.com (union of all results)
1171relays.osirusoft.com (union of all results)
1138bl.spamcop.net
1132no-more-funn.moensted.dk (union of all results)
894spam.dnsrbl.net
817dnsbl.njabl.org (union of all results)
795dnsbl.njabl.org (result 127.0.0.2 = source or relay)
793block.blars.org
752ztl.dorkslayers.com
742blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
696unconfirmed.dsbl.org
614no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
520blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
494blackholes.wirehub.net
484t1.bl.reynolds.net.au
484relays.osirusoft.com (result 127.0.0.4 = spam source)
471ipwhois.rfc-ignorant.org
419korea.blackholes.us
411spews.relays.osirusoft.com
411list.dsbl.org
410korea.services.net
404relays.osirusoft.com (result 127.0.0.2 = relay)
403inputs.relays.osirusoft.com
382ybl.megacity.org
380blackholes.intersil.net
346proxies.relays.monkeys.com
322blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
321relays.ordb.org
320relays.bl.kundenserver.de
292relays.visi.com
270blackholes.five-ten-sg.com (result 127.0.0.3 = dialup)
264socks.relays.osirusoft.com
263relays.osirusoft.com (result 127.0.0.9 = open proxy)
259multihop.dsbl.org
235blacklist.spambag.org
231no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
209china.blackholes.us
197no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
187opm.blitzed.org
185flowgoaway.com
179dev.null.dk
175verio.blackholes.us
168blocktest.relays.osirusoft.com (not a blacklist!)
162spamsources.relays.osirusoft.com (union of all results)
158spam.wytnij.to
146orbs.dorkslayers.com
144http.opm.blitzed.org
139dun.dnsrbl.net
136spamsources.relays.osirusoft.com (result 127.0.0.4 = spam source)
124relays.osirusoft.com (result 127.0.0.6 = spamsites)
122sbl.spamhaus.org
121spamhaus.relays.osirusoft.com
112spamsources.fabel.dk
90spamguard.leadmon.net (union of all results)
78work.drbl.croco.net
68spamguard.leadmon.net (result 127.0.0.2 = dialup)
66blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
65socks.opm.blitzed.org
43no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
413y.spam.mrs.kithrup.com
40formmail.relays.monkeys.com
39no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
37spammers.v6net.org
30dynablock.wirehub.net (result 127.0.0.2 = dialup)
30dynablock.wirehub.net (union of all results)
22dnsbl.njabl.org (result 127.0.0.3 = dialup)
22relays.dorkslayers.com
22blackhole.compu.net
21dialups.relays.osirusoft.com
20relays.osirusoft.com (result 127.0.0.3 = dialup)
16spamsources.relays.osirusoft.com (result 127.0.0.6 = spamhaus)
16spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
11proxies.relays.osirusoft.com
10spamsources.relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
10relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
9blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
7spamsites.relays.osirusoft.com (result 127.0.0.6)
7spamsites.relays.osirusoft.com (union of all results)
6spamguard.leadmon.net (result 127.0.0.3 = spam source)
5no-more-funn.moensted.dk (result 127.0.0.9 = misc)
4wingate.opm.blitzed.org
3no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1pm0-no-more.compu.net

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" and the pm0-no-more.compu.net zone "blocks all pm0 email."

Survey results for all known public domain-name-based DNS blacklists. Lookups were done on the domain names of connecting IP addresses.

HitsDNS Zone
8229(total number of IP addresses whose names were tested, including 391 at SDSC)
1319(union of all domain zones)
967abuse.rfc-ignorant.org
468whois.rfc-ignorant.org (union of all results)
287whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
181whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
12postmaster.rfc-ignorant.org
9dsn.rfc-ignorant.org (zone not intended for this use)
5client-domain.sjesl.monkeys.com
4sender-domain.sjesl.monkeys.com (zone not intended for this use)
2helo-domain.sjesl.monkeys.com (zone not intended for this use)

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

HitsDNS Zone
5460(total number of domains tested, including 183 at SDSC)
759(union of all domain zones)
285abuse.rfc-ignorant.org
253whois.rfc-ignorant.org (union of all results)
182whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
160sender-domain.sjesl.monkeys.com
154postmaster.rfc-ignorant.org
95helo-domain.sjesl.monkeys.com (zone not intended for this use)
80dsn.rfc-ignorant.org
74client-domain.sjesl.monkeys.com (zone not intended for this use)
71whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
30ex.dnsbl.org (union of all results)
22ex.dnsbl.org (result 127.0.0.2 = spamsites)
8ex.dnsbl.org (result 127.0.0.3 = spam source)
5bandwidth-pigs.monkeys.com
3in.dnsbl.org (result 127.0.0.2 = spam source)
3in.dnsbl.org (union of all results)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 22 July 2002.