Blacklists Compared

31 August 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
7939(total number of IP addresses tested, including 391 at SDSC)
4682(union of most IP zones)
3247xbl.selwerd.cx
2092blackholes.five-ten-sg.com (union of all results)
1501bl.spamcop.net
1275no-more-funn.moensted.dk (union of all results)
1241relays.osirusoft.com (union of all results)
1087block.blars.org
927dnsbl.njabl.org (union of all results)
897blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
892dnsbl.njabl.org (result 127.0.0.2 = source or relay)
882blackholes.wirehub.net
858blocktest.relays.osirusoft.com (not a blacklist!)
838spam.dnsrbl.net
783unconfirmed.dsbl.org
776cn-kr.blackholes.us (union of all results)
757no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
737ztl.dorkslayers.com
732cw.blackholes.us
612t1.bl.reynolds.net.au
545cn-kr.blackholes.us (result 127.0.0.3 = Korea)
545korea.blackholes.us
542korea.services.net
494inputs.relays.osirusoft.com
493ipwhois.rfc-ignorant.org
493list.dsbl.org
483relays.osirusoft.com (result 127.0.0.2 = relay)
481blackholes.intersil.net
475relays.osirusoft.com (result 127.0.0.4 = spam source)
453ybl.megacity.org
450blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
406assholes.madscience.nl
392relays.visi.com
380relays.bl.kundenserver.de
379proxies.relays.monkeys.com
377relays.ordb.org
376spews.relays.osirusoft.com
332blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
326mail-abuse.blacklist.jippg.org
314blackholes.five-ten-sg.com (result 127.0.0.3 = dialup)
262socks.relays.osirusoft.com
261relays.osirusoft.com (result 127.0.0.9 = open proxy)
252multihop.dsbl.org
239no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
231cn-kr.blackholes.us (result 127.0.0.2 = China)
231china.blackholes.us
230dev.null.dk
226no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
226flowgoaway.com
217spam.wytnij.to
195orbs.dorkslayers.com
192blacklist.spambag.org
184spamsources.relays.osirusoft.com (union of all results)
152spamsources.relays.osirusoft.com (result 127.0.0.4 = spam source)
143verio.blackholes.us
1433y.spam.mrs.kithrup.com
141spamsources.fabel.dk
137sbl.spamhaus.org
125dun.dnsrbl.net
124relays.osirusoft.com (result 127.0.0.6 = spamsites)
123spamhaus.relays.osirusoft.com
122opm.blitzed.org
118work.drbl.croco.net
110xo.blackholes.us
99http.opm.blitzed.org
95spamguard.leadmon.net (union of all results)
92brazil.blackholes.us
92blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
80level3.blackholes.us
77spamguard.leadmon.net (result 127.0.0.2 = dialup)
73taiwan.blackholes.us
69rackspace.blackholes.us
60formmail.relays.monkeys.com
52japan.blackholes.us
48argentina.blackholes.us
43blackhole.compu.net
38relays.dorkslayers.com
37dnsbl.delink.net
35inflow.blackholes.us
35ciberlynx.blackholes.us
35dnsbl.njabl.org (result 127.0.0.3 = dialup)
31no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
29socks.opm.blitzed.org
29spamsources.relays.osirusoft.com (result 127.0.0.6 = spamhaus)
27dynablock.wirehub.net (result 127.0.0.2 = dialup)
27dialups.relays.osirusoft.com
27dynablock.wirehub.net (union of all results)
22relays.osirusoft.com (result 127.0.0.3 = dialup)
18eli.blackholes.us
17proxies.relays.osirusoft.com
14spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
13broadwing.blackholes.us
12no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
11epoch.blackholes.us
10nigeria.blackholes.us
9thailand.blackholes.us
6no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
4spamguard.leadmon.net (result 127.0.0.3 = spam source)
4no-more-funn.moensted.dk (result 127.0.0.9 = misc)
3blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
3blackholes.five-ten-sg.com (result 127.0.0.6 = relay)
2valueweb.blackholes.us
2wingate.opm.blitzed.org
2spamsources.relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
2spamsites.relays.osirusoft.com (result 127.0.0.6)
2relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
2spamsites.relays.osirusoft.com (union of all results)
2dialup.blacklist.jippg.org (union of all results)
1spamsources.relays.osirusoft.com (result 127.0.0.5 = relay output)
1relays.osirusoft.com (result 127.0.0.5 = relay output)
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
1dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
1blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
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
7939(total number of IP addresses whose names were tested, including 391 at SDSC)
1431(union of all domain zones)
1131abuse.rfc-ignorant.org
472whois.rfc-ignorant.org (union of all results)
303whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
169whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
8dsn.rfc-ignorant.org (zone not intended for this use)
5postmaster.rfc-ignorant.org
5client-domain.sjesl.monkeys.com
4sender-domain.sjesl.monkeys.com (zone not intended for this use)
1helo-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
5297(total number of domains tested, including 172 at SDSC)
853(union of all domain zones)
348abuse.rfc-ignorant.org
302whois.rfc-ignorant.org (union of all results)
184postmaster.rfc-ignorant.org
178whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
152sender-domain.sjesl.monkeys.com
124whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
110dsn.rfc-ignorant.org
99helo-domain.sjesl.monkeys.com (zone not intended for this use)
73client-domain.sjesl.monkeys.com (zone not intended for this use)
33ex.dnsbl.org (union of all results)
25ex.dnsbl.org (result 127.0.0.2 = spamsites)
8ex.dnsbl.org (result 127.0.0.3 = spam source)
7bandwidth-pigs.monkeys.com
2in.dnsbl.org (result 127.0.0.2 = spam source)
2in.dnsbl.org (union of all results)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 2 September 2002.