Blacklists Compared

10 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
7787(total number of IP addresses tested, including 425 at SDSC)
4384(union of most IP zones)
3112xbl.selwerd.cx
1853blackholes.five-ten-sg.com (union of all results)
1289bl.spamcop.net
1134relays.osirusoft.com (union of all results)
1104no-more-funn.moensted.dk (union of all results)
1036block.blars.org
829spam.dnsrbl.net
824dnsbl.njabl.org (union of all results)
792blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
774dnsbl.njabl.org (result 127.0.0.2 = source or relay)
704blackholes.wirehub.net
702unconfirmed.dsbl.org
702ztl.dorkslayers.com
662no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
657cn-kr.blackholes.us (union of all results)
538t1.bl.reynolds.net.au
499work.drbl.croco.net
493ipwhois.rfc-ignorant.org
481ybl.megacity.org
463list.dsbl.org
449relays.osirusoft.com (result 127.0.0.2 = relay)
447inputs.relays.osirusoft.com
441relays.osirusoft.com (result 127.0.0.4 = spam source)
440cn-kr.blackholes.us (result 127.0.0.3 = Korea)
440korea.blackholes.us
438blocktest.relays.osirusoft.com (not a blacklist!)
437korea.services.net
389blackholes.intersil.net
386blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
367relays.ordb.org
360spews.relays.osirusoft.com
351assholes.madscience.nl
347relays.bl.kundenserver.de
333relays.visi.com
325mail-abuse.blacklist.jippg.org
309proxies.relays.monkeys.com
293blackholes.five-ten-sg.com (result 127.0.0.3 = dialup)
292blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
217cn-kr.blackholes.us (result 127.0.0.2 = China)
217china.blackholes.us
216flowgoaway.com
210multihop.dsbl.org
207socks.relays.osirusoft.com
204no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
203spam.wytnij.to
201relays.osirusoft.com (result 127.0.0.9 = open proxy)
192dev.null.dk
192no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
189blacklist.spambag.org
162verio.blackholes.us
158orbs.dorkslayers.com
157spamsources.relays.osirusoft.com (union of all results)
149opm.blitzed.org
147spamsources.fabel.dk
1403y.spam.mrs.kithrup.com
131spamsources.relays.osirusoft.com (result 127.0.0.4 = spam source)
116http.opm.blitzed.org
116dun.dnsrbl.net
105spamguard.leadmon.net (union of all results)
103sbl.spamhaus.org
102spamhaus.relays.osirusoft.com
101level3.blackholes.us
98relays.osirusoft.com (result 127.0.0.6 = spamsites)
97xo.blackholes.us
88taiwan.blackholes.us
79spamguard.leadmon.net (result 127.0.0.2 = dialup)
76brazil.blackholes.us
70blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
55socks.opm.blitzed.org
52japan.blackholes.us
51dynablock.wirehub.net (result 127.0.0.2 = dialup)
51dynablock.wirehub.net (union of all results)
50dnsbl.njabl.org (result 127.0.0.3 = dialup)
47formmail.relays.monkeys.com
41blackhole.compu.net
39rackspace.blackholes.us
39inflow.blackholes.us
37argentina.blackholes.us
37dialups.relays.osirusoft.com
37dnsbl.delink.net
32relays.osirusoft.com (result 127.0.0.3 = dialup)
32no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
32relays.dorkslayers.com
23spammers.v6net.org
23spamsources.relays.osirusoft.com (result 127.0.0.6 = spamhaus)
21eli.blackholes.us
21spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
15blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
13thailand.blackholes.us
13broadwing.blackholes.us
11proxies.relays.osirusoft.com
7no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
6epoch.blackholes.us
6wingate.opm.blitzed.org
5spamguard.leadmon.net (result 127.0.0.3 = spam source)
4spamsites.relays.osirusoft.com (result 127.0.0.6)
4no-more-funn.moensted.dk (result 127.0.0.9 = misc)
4blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4spamsites.relays.osirusoft.com (union of all results)
3dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
3no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
3dialup.blacklist.jippg.org (union of all results)
2valueweb.blackholes.us
2spamsources.relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
2ex.dnsbl.org (result 127.0.0.2 = spamsites)
1spamsources.relays.osirusoft.com (result 127.0.0.5 = relay output)
1relays.osirusoft.com (result 127.0.0.5 = relay output)
1blackholes.five-ten-sg.com (result 127.0.0.6 = relay)
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
7787(total number of IP addresses whose names were tested, including 425 at SDSC)
1385(union of all domain zones)
1094abuse.rfc-ignorant.org
419whois.rfc-ignorant.org (union of all results)
270whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
149whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
8dsn.rfc-ignorant.org (zone not intended for this use)
7postmaster.rfc-ignorant.org
4client-domain.sjesl.monkeys.com
3sender-domain.sjesl.monkeys.com (zone not intended for this use)
2ex.dnsbl.org (result 127.0.0.2 = spamsites)
2ex.dnsbl.org (union of all results)
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
5094(total number of domains tested, including 227 at SDSC)
742(union of all domain zones)
303abuse.rfc-ignorant.org
217whois.rfc-ignorant.org (union of all results)
180postmaster.rfc-ignorant.org
169sender-domain.sjesl.monkeys.com
133whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
111helo-domain.sjesl.monkeys.com (zone not intended for this use)
94dsn.rfc-ignorant.org
84whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
81client-domain.sjesl.monkeys.com (zone not intended for this use)
33ex.dnsbl.org (union of all results)
24ex.dnsbl.org (result 127.0.0.2 = spamsites)
9ex.dnsbl.org (result 127.0.0.3 = spam source)
5bandwidth-pigs.monkeys.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 12 August 2002.