Blacklists Compared

29 June 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
7995(total number of IP addresses tested, including 384 at SDSC)
3981(union of most IP zones)
3118xbl.selwerd.cx
1783blackholes.five-ten-sg.com (union of all results)
1221bl.spamcop.net
1165no-more-funn.moensted.dk (union of all results)
1111relays.osirusoft.com (union of all results)
1001blocktest.relays.osirusoft.com (not a blacklist!)
842blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
742dnsbl.njabl.org (union of all results)
721dnsbl.njabl.org (result 127.0.0.2 = source or relay)
719ztl.dorkslayers.com
676no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
676unconfirmed.dsbl.org
675block.blars.org
510korea.services.net
490work.drbl.croco.net
485relays.osirusoft.com (result 127.0.0.4 = spam source)
446blackholes.intersil.net
410list.dsbl.org
404spews.relays.osirusoft.com
397ipwhois.rfc-ignorant.org
386blackholes.wirehub.net
374ybl.megacity.org
340t1.bl.reynolds.net.au
336blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
335relays.osirusoft.com (result 127.0.0.2 = relay)
335inputs.relays.osirusoft.com
331proxies.relays.monkeys.com
306blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
278relays.osirusoft.com (result 127.0.0.9 = open proxy)
277socks.relays.osirusoft.com
256no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
248blackholes.five-ten-sg.com (result 127.0.0.3 = dialup)
236relays.bl.kundenserver.de
229multihop.dsbl.org
216relays.visi.com
198relays.ordb.org
190orbs.dorkslayers.com
187blacklist.spambag.org
185flowgoaway.com
171no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
161opm.blitzed.org
148spam.wytnij.to
1473y.spam.mrs.kithrup.com
133spamsources.fabel.dk
131spamsources.relays.osirusoft.com (union of all results)
121spamsources.relays.osirusoft.com (result 127.0.0.4 = spam source)
96http.opm.blitzed.org
94sbl.spamhaus.org
94spamguard.leadmon.net (union of all results)
92spamhaus.relays.osirusoft.com
90relays.osirusoft.com (result 127.0.0.6 = spamsites)
75socks.opm.blitzed.org
73spamguard.leadmon.net (result 127.0.0.2 = dialup)
44formmail.relays.monkeys.com
44blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
39no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
37spammers.v6net.org
27dynablock.wirehub.net (result 127.0.0.2 = dialup)
27relays.dorkslayers.com
27dynablock.wirehub.net (union of all results)
23dialups.relays.osirusoft.com
23relays.osirusoft.com (result 127.0.0.3 = dialup)
23no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
21dnsbl.njabl.org (result 127.0.0.3 = dialup)
15spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
11proxies.relays.osirusoft.com
10spamsources.relays.osirusoft.com (result 127.0.0.6 = spamhaus)
9blackhole.compu.net
6spamguard.leadmon.net (result 127.0.0.3 = spam source)
5blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
3wingate.opm.blitzed.org
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1ex.dnsbl.org (result 127.0.0.2 = spamsites)
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
7995(total number of IP addresses whose names were tested, including 384 at SDSC)
1229(union of all domain zones)
875abuse.rfc-ignorant.org
833whois.rfc-ignorant.org (union of all results)
648whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
185whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
10postmaster.rfc-ignorant.org
6client-domain.sjesl.monkeys.com
4sender-domain.sjesl.monkeys.com (zone not intended for this use)
2dsn.rfc-ignorant.org (zone not intended for this use)
2helo-domain.sjesl.monkeys.com (zone not intended for this use)
1ex.dnsbl.org (result 127.0.0.2 = spamsites)
1ex.dnsbl.org (union of all results)

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

HitsDNS Zone
5345(total number of domains tested, including 188 at SDSC)
752(union of all domain zones)
303abuse.rfc-ignorant.org
272whois.rfc-ignorant.org (union of all results)
192whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
148sender-domain.sjesl.monkeys.com
135postmaster.rfc-ignorant.org
102helo-domain.sjesl.monkeys.com (zone not intended for this use)
82dsn.rfc-ignorant.org
80whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
68client-domain.sjesl.monkeys.com (zone not intended for this use)
24ex.dnsbl.org (union of all results)
18ex.dnsbl.org (result 127.0.0.2 = spamsites)
6ex.dnsbl.org (result 127.0.0.3 = spam source)
4bandwidth-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 30 June 2002.