Blacklists Compared

31 May 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 and block.blars.org zones zone because they are too aggressive to be widely useful, and the blocktest.relays.osirusoft.com and query.bondedsender.org zones are also excluded because they are not blacklists.

HitsDNS Zone
11609(total number of IP addresses tested, including 454 at SDSC)
7853(union of most IP zones)
6189xbl.selwerd.cx
4078t1.bl.reynolds.net.au
3653blackholes.five-ten-sg.com (union of all results)
3236block.blars.org
3028blackholes.easynet.nl
2957unconfirmed.dsbl.org
2928no-more-funn.moensted.dk (union of all results)
2816wpb.bl.reynolds.net.au
2660dsbl.bl.reynolds.net.au
2660list.dsbl.org
2581dnsbl.njabl.org (union of all results)
2520blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
2514dnsbl.sorbs.net (union of all results)
2306relays.osirusoft.com (union of all results)
2112proxies.blackholes.easynet.nl
2101dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1825dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1819proxies.relays.monkeys.com (result 127.0.0.2 = open proxy)
1819proxies.relays.monkeys.com (union of all results)
1670cn-kr.blackholes.us (union of all results)
1652bl.spamcop.net
1643dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1568no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
1115ipwhois.rfc-ignorant.org
1115opm.blitzed.org
987rddn.bl.reynolds.net.au
961relays.osirusoft.com (result 127.0.0.9 = open proxy)
953socks.relays.osirusoft.com
936cn-kr.blackholes.us (result 127.0.0.2 = China)
936china.blackholes.us
829blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
789no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
768spews.bl.reynolds.net.au
739spews.relays.osirusoft.com
734cn-kr.blackholes.us (result 127.0.0.3 = Korea)
734korea.blackholes.us
727spam.dnsrbl.net
723korea.services.net
708sbl.spamhaus.org
685spamhaus.relays.osirusoft.com
682relays.osirusoft.com (result 127.0.0.4 = spam source)
608relays.osirusoft.com (result 127.0.0.6 = spamsites)
574work.drbl.croco.net
573blocktest.relays.osirusoft.com (not a blacklist!)
570spamsources.fabel.dk
524cw.blackholes.us
511ybl.megacity.org
504blackholes.intersil.net
454dnsbl.njabl.org (result 127.0.0.4 = spam source)
426dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
387blacklist.spambag.org
370pdl.bl.reynolds.net.au
368dnsbl.delink.net
339spam.wytnij.to
318blackhole.compu.net
316dnsbl.njabl.org (result 127.0.0.2 = source or relay)
309sbbl.they.com
303mail-abuse.blacklist.jippg.org
289relays.osirusoft.com (result 127.0.0.2 = relay)
289inputs.relays.osirusoft.com
285spamguard.leadmon.net (union of all results)
277level3.blackholes.us
273no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
264spamguard.leadmon.net (result 127.0.0.2 = dialup)
241multihop.dsbl.org
239dynablock.easynet.nl (result 127.0.0.2 = dialup)
239dynablock.easynet.nl (union of all results)
232wdl.bl.reynolds.net.au
226blackholes.uceb.org (union of all results)
198blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
197lbl.lagengymnastik.dk
187relays.ordb.org
184osps.bl.reynolds.net.au
170taiwan.blackholes.us
169osrs.bl.reynolds.net.au
168comcast.blackholes.us
166brazil.blackholes.us
164dnsbl.njabl.org (result 127.0.0.3 = dialup)
161rr.blackholes.us
159verio.blackholes.us
155relays.bl.kundenserver.de
151spamsources.relays.osirusoft.com (union of all results)
151dialups.relays.osirusoft.com (union of all results)
146no-more-funn.moensted.dk (result 127.0.0.9 = misc)
143dialups.relays.osirusoft.com (result 127.0.0.3 = dialup)
141dun.dnsrbl.net
138spamsources.relays.osirusoft.com (result 127.0.0.4 = spam source)
137blackholes.uceb.org (result 127.0.0.3 = spam source)
137ohps.bl.reynolds.net.au
136dialups.visi.com
124query.bondedsender.org (not a blacklist!)
1233y.spam.mrs.kithrup.com
121bl.deadbeef.com
114flowgoaway.com
109relays.osirusoft.com (result 127.0.0.3 = dialup)
96charter.blackholes.us
90probes.bl.reynolds.net.au
89hongkong.blackholes.us
86dnsbl.sorbs.net (result 127.0.0.6 = spam source)
84no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
83japan.blackholes.us
75qwest.blackholes.us
75internap.blackholes.us
74xo.blackholes.us
71rmst.bl.reynolds.net.au
70bl.deadbeef.com
67russia.blackholes.us
64blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
61vox.schpider.com
55blackholes.brainerd.net
54argentina.blackholes.us
49blackholes.uceb.org (result 127.0.0.2 = relay)
49no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
48bellsouth.blackholes.us
45interbusiness.blackholes.us
35blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
31wanadoo-fr.blackholes.us
31singapore.blackholes.us
31infolink.blackholes.us
31inflow.blackholes.us
31tr.countries.nerd.dk
30rackspace.blackholes.us
25ph.rbl.cluecentral.net
24he.blackholes.us
24blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
23nigeria.blackholes.us
21telstra.blackholes.us
21cybercon.blackholes.us
21spam.exsilia.net (union of all results)
20proxy.relays.osirusoft.com
20spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
19thailand.blackholes.us
19covad.blackholes.us
18above.blackholes.us
18spam.exsilia.net (result 127.0.0.2 = spam source)
16malaysia.blackholes.us
15eli.blackholes.us
14dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
14no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
14dialup.blacklist.jippg.org (union of all results)
13blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
12valuenet.blackholes.us
11spamsources.relays.osirusoft.com (result 127.0.0.6 = spamhaus)
10broadwing.blackholes.us
9dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
8owps.bl.reynolds.net.au
8dialups.relays.osirusoft.com (result 127.0.0.4 = no reverse DNS)
7yipes.blackholes.us
7epoch.blackholes.us
7burst.blackholes.us
7blackholes.uceb.org (result 127.0.0.4 = spam source network)
6pajo.blackholes.us
6maxim.blackholes.us
6affinity.blackholes.us
6dev.null.dk
5dnsbl.sorbs.net (result 127.0.0.5 = open relay)
5no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
5blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
4olm.blackholes.us
4spamsources.relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
4dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
3spam.exsilia.net (result 127.0.0.3 = virus source)
2ciberlynx.blackholes.us
2dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2spamsites.bl.reynolds.net.au
2omrs.bl.reynolds.net.au
2relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
1spamsites.relays.osirusoft.com (result 127.0.0.6)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
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
11609(total number of IP addresses whose names were tested, including 454 at SDSC)
3319(union of all domain zones)
2465abuse.rfc-ignorant.org
987rddn.bl.reynolds.net.au
696whois.rfc-ignorant.org (union of all results)
359whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
337whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
121bl.deadbeef.com
28dsn.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
7017(total number of domains tested, including 240 at SDSC)
1399(union of all domain zones)
637abuse.rfc-ignorant.org
562whois.rfc-ignorant.org (union of all results)
412whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
355postmaster.rfc-ignorant.org
313dsn.rfc-ignorant.org
150whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
63bl.deadbeef.com
27ex.dnsbl.org (union of all results)
24ex.dnsbl.org (result 127.0.0.2 = spamsites)
6bandwidth-pigs.monkeys.com
6in.dnsbl.org (union of all results)
5in.dnsbl.org (result 127.0.0.6 = unconfirmed opt-in)
4rddn.bl.reynolds.net.au (zone not intended for this use)
3ex.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 5 June 2003.