Blacklists Compared

14 December 2002

[ 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
9758(total number of IP addresses tested, including 451 at SDSC)
6322(union of most IP zones)
4572xbl.selwerd.cx
3597blackholes.five-ten-sg.com (union of all results)
2065relays.osirusoft.com (union of all results)
1816blackholes.wirehub.net
1814bl.spamcop.net
1712no-more-funn.moensted.dk (union of all results)
1561block.blars.org
1241unconfirmed.dsbl.org
1195ztl.dorkslayers.com
1161blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
1128assholes.madscience.nl
1122blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
1062blackholes.intersil.net
1055relays.osirusoft.com (result 127.0.0.4 = spam source)
1010dnsbl.njabl.org (union of all results)
979list.dsbl.org
963ipwhois.rfc-ignorant.org
870sbl.spamhaus.org
845blackholes.five-ten-sg.com (result 127.0.0.3 = dialup)
839no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
829cn-kr.blackholes.us (union of all results)
771spews.relays.osirusoft.com
706cw.blackholes.us
683t1.bl.reynolds.net.au
625spam.dnsrbl.net
622blocktest.relays.osirusoft.com (not a blacklist!)
573dnsbl.sorbs.net (union of all results)
525cn-kr.blackholes.us (result 127.0.0.3 = Korea)
525korea.blackholes.us
522korea.services.net
510dnsbl.njabl.org (result 127.0.0.4 = spam source)
481spamhaus.relays.osirusoft.com
475blackholes.uceb.org (union of all results)
474relays.osirusoft.com (result 127.0.0.6 = spamsites)
472spamsources.fabel.dk
456socks.relays.osirusoft.com
456relays.osirusoft.com (result 127.0.0.9 = open proxy)
421ybl.megacity.org
417dnsbl.njabl.org (result 127.0.0.2 = source or relay)
416vox.schpider.com
405dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
390no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
373blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
370opm.blitzed.org
362spamsources.relays.osirusoft.com (union of all results)
351spamsources.relays.osirusoft.com (result 127.0.0.4 = spam source)
342work.drbl.croco.net
339blacklist.spambag.org
330relays.osirusoft.com (result 127.0.0.2 = relay)
330inputs.relays.osirusoft.com
307spam.wytnij.to
304cn-kr.blackholes.us (result 127.0.0.2 = China)
304china.blackholes.us
298blackholes.uceb.org (result 127.0.0.4 = spam organization)
293no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
286dnsbl.delink.net
278http.opm.blitzed.org
277relays.bl.kundenserver.de
253mail-abuse.blacklist.jippg.org
235multihop.dsbl.org
221flowgoaway.com
203relays.ordb.org
190verio.blackholes.us
185rackspace.blackholes.us
184brazil.blackholes.us
183dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
176blackhole.compu.net
1643y.spam.mrs.kithrup.com
154internap.blackholes.us
136blackholes.uceb.org (result 127.0.0.3 = spam source)
132socks.opm.blitzed.org
129spamguard.leadmon.net (union of all results)
128taiwan.blackholes.us
110spamguard.leadmon.net (result 127.0.0.2 = dialup)
109no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
106rr.blackholes.us
99level3.blackholes.us
95dun.dnsrbl.net
92orbs.dorkslayers.com
83xo.blackholes.us
78blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
73dnsbl.njabl.org (result 127.0.0.3 = dialup)
59blackholes.uceb.org (result 127.0.0.2 = relay)
57japan.blackholes.us
55dialups.relays.osirusoft.com (union of all results)
54argentina.blackholes.us
53dialups.visi.com
50dialups.relays.osirusoft.com (result 127.0.0.3 = dialup)
48relays.osirusoft.com (result 127.0.0.3 = dialup)
47dynablock.wirehub.net (result 127.0.0.2 = dialup)
47dynablock.wirehub.net (union of all results)
40hongkong.blackholes.us
36inflow.blackholes.us
36inflow.noflow.org
33above.blackholes.us
32cybercon.blackholes.us
32no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
31formmail.relays.monkeys.com
30russia.blackholes.us
30spam.exsilia.net (result 127.0.0.2 = spam source)
30spam.exsilia.net (union of all results)
28dev.null.dk
26interbusiness.blackholes.us
25singapore.blackholes.us
23no-more-funn.moensted.dk (result 127.0.0.9 = misc)
21yipes.blackholes.us
20ciberlynx.blackholes.us
20dnsbl.sorbs.net (result 127.0.0.6 = spam source)
19eli.blackholes.us
18spammers.v6net.org
17spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
16broadwing.blackholes.us
15nigeria.blackholes.us
14wanadoo-fr.blackholes.us
14he.blackholes.us
14covad.blackholes.us
13pajo.blackholes.us
12no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
12blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
11valuenet.blackholes.us
11thailand.blackholes.us
11no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
10malaysia.blackholes.us
10relays.dorkslayers.com
9epoch.blackholes.us
8spamsources.relays.osirusoft.com (result 127.0.0.6 = spamhaus)
8dnsbl.njabl.org (result 127.0.0.9 = open proxy)
7dialup.blacklist.jippg.org (union of all results)
6dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
6blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
5spamsources.relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
5dialups.relays.osirusoft.com (result 127.0.0.4 = no reverse DNS)
4valueweb.blackholes.us
4relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
3wingate.opm.blitzed.org
3no-more-funn.moensted.dk (result 127.0.0.11 = repeated probes)
2dnsbl.njabl.org (result 127.0.0.5 = relay output)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
1skynetweb.blackholes.us
1dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
1spamsites.relays.osirusoft.com (result 127.0.0.6)
1proxies.relays.osirusoft.com
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
1proxies.exsilia.net
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
9758(total number of IP addresses whose names were tested, including 451 at SDSC)
1924(union of all domain zones)
1563abuse.rfc-ignorant.org
537whois.rfc-ignorant.org (union of all results)
317whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
220whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
10postmaster.rfc-ignorant.org
5dsn.rfc-ignorant.org (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
6311(total number of domains tested, including 227 at SDSC)
1025(union of all domain zones)
539abuse.rfc-ignorant.org
369whois.rfc-ignorant.org (union of all results)
293whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
234postmaster.rfc-ignorant.org
151dsn.rfc-ignorant.org
76whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
27ex.dnsbl.org (union of all results)
21ex.dnsbl.org (result 127.0.0.2 = spamsites)
8bandwidth-pigs.monkeys.com
6ex.dnsbl.org (result 127.0.0.3 = spam source)
4in.dnsbl.org (union of all results)
3in.dnsbl.org (result 127.0.0.2 = spam source)
1in.dnsbl.org (result 127.0.0.6 = unconfirmed opt-in)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 16 December 2002.