Blacklists Compared

8 February 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 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
9856(total number of IP addresses tested, including 501 at SDSC)
6105(union of most IP zones)
4247xbl.selwerd.cx
3490blackholes.five-ten-sg.com (union of all results)
2574t1.bl.reynolds.net.au
2078blackholes.wirehub.net
1891no-more-funn.moensted.dk (union of all results)
1805relays.osirusoft.com (union of all results)
1761block.blars.org
1467unconfirmed.dsbl.org
1248ztl.dorkslayers.com
1197list.dsbl.org
1194blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
975bl.spamcop.net
970proxies.relays.monkeys.com (union of all results)
966proxies.relays.monkeys.com (result 127.0.0.2 = open proxy)
962blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
932dnsbl.sorbs.net (union of all results)
894blackholes.intersil.net
857blackholes.five-ten-sg.com (result 127.0.0.3 = dialup)
850relays.osirusoft.com (result 127.0.0.4 = spam source)
850blocktest.relays.osirusoft.com (not a blacklist!)
847no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
842dnsbl.njabl.org (union of all results)
825spews.bl.reynolds.net.au
815spews.relays.osirusoft.com
800assholes.madscience.nl
796cn-kr.blackholes.us (union of all results)
733sbl.spamhaus.org
731dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
695spamhaus.relays.osirusoft.com
658relays.osirusoft.com (result 127.0.0.6 = spamsites)
645cw.blackholes.us
597ipwhois.rfc-ignorant.org
576ybl.megacity.org
505cn-kr.blackholes.us (result 127.0.0.3 = Korea)
505korea.blackholes.us
504spam.dnsrbl.net
499korea.services.net
471no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
470work.drbl.croco.net
435opm.blitzed.org
420dnsbl.njabl.org (result 127.0.0.4 = spam source)
412dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
395blackholes.uceb.org (union of all results)
360blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
356relays.osirusoft.com (result 127.0.0.9 = open proxy)
347socks.relays.osirusoft.com
320spam.wytnij.to
311dnsbl.njabl.org (result 127.0.0.2 = source or relay)
309no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
309spamsources.fabel.dk
309dnsbl.delink.net
308blacklist.spambag.org
291cn-kr.blackholes.us (result 127.0.0.2 = China)
291china.blackholes.us
256rackspace.blackholes.us
236blackholes.uceb.org (result 127.0.0.4 = spam organization)
230flowgoaway.com
225relays.osirusoft.com (result 127.0.0.2 = relay)
225mail-abuse.blacklist.jippg.org
224multihop.dsbl.org
223inputs.relays.osirusoft.com
219brazil.blackholes.us
1673y.spam.mrs.kithrup.com
161verio.blackholes.us
151no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
151spamsources.relays.osirusoft.com (union of all results)
144spamsources.relays.osirusoft.com (result 127.0.0.4 = spam source)
135relays.bl.kundenserver.de
120dynablock.wirehub.net (result 127.0.0.2 = dialup)
120dynablock.wirehub.net (union of all results)
114rr.blackholes.us
111relays.ordb.org
110spamguard.leadmon.net (union of all results)
103internap.blackholes.us
100dnsbl.njabl.org (result 127.0.0.3 = dialup)
98spamguard.leadmon.net (result 127.0.0.2 = dialup)
96blackholes.uceb.org (result 127.0.0.3 = spam source)
95dun.dnsrbl.net
92vox.schpider.com
81dialups.relays.osirusoft.com (result 127.0.0.3 = dialup)
81dialups.relays.osirusoft.com (union of all results)
78blackholes.uceb.org (result 127.0.0.2 = relay)
75xo.blackholes.us
74level3.blackholes.us
67taiwan.blackholes.us
67blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
65dialups.visi.com
65relays.osirusoft.com (result 127.0.0.3 = dialup)
65blackhole.compu.net
64blackholes.brainerd.net
62orbs.dorkslayers.com
58no-more-funn.moensted.dk (result 127.0.0.9 = misc)
56japan.blackholes.us
56argentina.blackholes.us
56spam.exsilia.net (result 127.0.0.2 = spam source)
56spam.exsilia.net (union of all results)
51interbusiness.blackholes.us
48russia.blackholes.us
46cybercon.blackholes.us
37dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
36tr.countries.nerd.dk
35singapore.blackholes.us
33dnsbl.sorbs.net (result 127.0.0.6 = spam source)
32inflow.blackholes.us
32inflow.noflow.org
31hongkong.blackholes.us
28no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
25eli.blackholes.us
25above.blackholes.us
25dev.null.dk
22nigeria.blackholes.us
21blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
18spammers.v6net.org
16he.blackholes.us
16blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
16ph.rbl.cluecentral.net
15no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
15relays.dorkslayers.com
13blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
12broadwing.blackholes.us
12proxies.relays.osirusoft.com
12no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
11valuenet.blackholes.us
10wanadoo-fr.blackholes.us
10thailand.blackholes.us
10covad.blackholes.us
9pajo.blackholes.us
9epoch.blackholes.us
9spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
7yipes.blackholes.us
7malaysia.blackholes.us
7ciberlynx.blackholes.us
7affinity.blackholes.us
6valueweb.blackholes.us
6spamsources.relays.osirusoft.com (result 127.0.0.6 = spamhaus)
6dnsbl.njabl.org (result 127.0.0.9 = open proxy)
5dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
4proxies.relays.monkeys.com (result 127.0.0.3 = proxy output)
4dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
4dialup.blacklist.jippg.org (union of all results)
3spamguard.leadmon.net (result 127.0.0.3 = spam source)
2proxies.exsilia.net
1spamsources.relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
1spamsites.relays.osirusoft.com (result 127.0.0.6)
1relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
1spamsites.relays.osirusoft.com (union of all results)

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
9856(total number of IP addresses whose names were tested, including 501 at SDSC)
2271(union of all domain zones)
1542whois.rfc-ignorant.org (union of all results)
1467abuse.rfc-ignorant.org
1233whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
309whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
16dsn.rfc-ignorant.org (zone not intended for this use)
14postmaster.rfc-ignorant.org

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

HitsDNS Zone
6753(total number of domains tested, including 239 at SDSC)
1004(union of all domain zones)
523abuse.rfc-ignorant.org
364whois.rfc-ignorant.org (union of all results)
274whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
232postmaster.rfc-ignorant.org
160dsn.rfc-ignorant.org
90whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
36ex.dnsbl.org (union of all results)
31ex.dnsbl.org (result 127.0.0.2 = spamsites)
7bandwidth-pigs.monkeys.com
7in.dnsbl.org (union of all results)
6in.dnsbl.org (result 127.0.0.6 = unconfirmed opt-in)
5ex.dnsbl.org (result 127.0.0.3 = spam source)
1in.dnsbl.org (result 127.0.0.2 = spam source)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 11 February 2003.