Blacklists Compared

26 July 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
11705(total number of IP addresses tested, including 429 at SDSC)
8285(union of most IP zones)
6545xbl.selwerd.cx
4618t1.bl.reynolds.net.au
3931blackholes.five-ten-sg.com (union of all results)
3903block.blars.org
3709blackholes.easynet.nl
3514wpb.bl.reynolds.net.au
3002dnsbl.njabl.org (union of all results)
2992unconfirmed.dsbl.org
2979no-more-funn.moensted.dk (union of all results)
2852blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
2796list.dsbl.org
2795dsbl.bl.reynolds.net.au
2723dnsbl.sorbs.net (union of all results)
2715relays.osirusoft.com (union of all results)
2609proxies.blackholes.easynet.nl
2520psbl.surriel.com
2208dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
2125dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2013dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1824proxies.relays.monkeys.com (result 127.0.0.2 = open proxy)
1824proxies.relays.monkeys.com (union of all results)
1778cn-kr.blackholes.us (union of all results)
1696bl.spamcop.net
1669no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
1455blackhole.compu.net
1388relays.osirusoft.com (result 127.0.0.9 = open proxy)
1383socks.relays.osirusoft.com
1101ipwhois.rfc-ignorant.org
1053opm.blitzed.org
901cn-kr.blackholes.us (result 127.0.0.2 = China)
901china.blackholes.us
882spews.bl.reynolds.net.au
877cn-kr.blackholes.us (result 127.0.0.3 = Korea)
877korea.blackholes.us
870korea.services.net
864spews.relays.osirusoft.com
815no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
786unsure.nether.net
783blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
777relays.osirusoft.com (result 127.0.0.4 = spam source)
758sbl.spamhaus.org
743spamhaus.relays.osirusoft.com
675relays.osirusoft.com (result 127.0.0.6 = spamsites)
626spamsources.fabel.dk
587ybl.megacity.org
585dynablock.easynet.nl (result 127.0.0.2 = dialup)
585wdl.bl.reynolds.net.au
585dynablock.easynet.nl (union of all results)
573relaywatcher.n13mbl.com
570pdl.bl.reynolds.net.au
522cw.blackholes.us
497dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
486blackholes.intersil.net
447dnsbl.njabl.org (result 127.0.0.4 = spam source)
410blacklist.spambag.org
353dnsbl.delink.net
304spam.wytnij.to
302level3.blackholes.us
287work.drbl.croco.net
250spamguard.leadmon.net (union of all results)
243spamguard.leadmon.net (result 127.0.0.2 = dialup)
239relays.osirusoft.com (result 127.0.0.2 = open relay)
239inputs.relays.osirusoft.com
238blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
228no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
223spam.shri.net
221dnsbl.njabl.org (result 127.0.0.3 = dialup)
211dnsbl.njabl.org (result 127.0.0.2 = source or relay)
208lbl.lagengymnastik.dk
202comcast.blackholes.us
199dialups.visi.com
198taiwan.blackholes.us
190brazil.blackholes.us
182mail-abuse.blacklist.jippg.org
173multihop.dsbl.org
168no-more-funn.moensted.dk (result 127.0.0.9 = misc)
164dnsbl.sorbs.net (result 127.0.0.6 = spam source)
159dialups.relays.osirusoft.com (union of all results)
153dialups.relays.osirusoft.com (result 127.0.0.3 = dialup)
148rr.blackholes.us
139verio.blackholes.us
134relays.ordb.org
134query.bondedsender.org (not a blacklist!)
132ohps.bl.reynolds.net.au
130sbbl.they.com
125relays.osirusoft.com (result 127.0.0.3 = dialup)
112qwest.blackholes.us
110osrs.bl.reynolds.net.au
1043y.spam.mrs.kithrup.com
104spamsources.relays.osirusoft.com (union of all results)
103internap.blackholes.us
102japan.blackholes.us
102hongkong.blackholes.us
98spamsources.relays.osirusoft.com (result 127.0.0.4 = spam source)
94osps.bl.reynolds.net.au
89blackholes.uceb.org (union of all results)
83relays.nether.net
82relays.bl.kundenserver.de
80xo.blackholes.us
78argentina.blackholes.us
78blocktest.relays.osirusoft.com (not a blacklist!)
76dnsbl.antispam.or.id
75rmst.bl.reynolds.net.au
72charter.blackholes.us
71mexico.blackholes.us
65no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
62flowgoaway.com
61blackholes.brainerd.net
55vox.schpider.com
51russia.blackholes.us
51dun.dnsrbl.net
46turkey.blackholes.us
46tr.countries.nerd.dk
42inflow.blackholes.us
42dnsbl.sorbs.net (result 127.0.0.10 = dialup)
39blackholes.uceb.org (result 127.0.0.3 = spam source)
37interbusiness.blackholes.us
37infolink.blackholes.us
37bellsouth.blackholes.us
35nigeria.blackholes.us
31bl.deadbeef.com
29wanadoo-fr.blackholes.us
29he.blackholes.us
29dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
29dialup.blacklist.jippg.org (union of all results)
28blackholes.uceb.org (result 127.0.0.2 = open relay)
26above.blackholes.us
25rackspace.blackholes.us
25blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
24rogers.blackholes.us
24eli.blackholes.us
24ph.rbl.cluecentral.net
23singapore.blackholes.us
23spam.exsilia.net (union of all results)
21cybercon.blackholes.us
20proxy.relays.osirusoft.com
19spam.exsilia.net (result 127.0.0.2 = spam source)
18thailand.blackholes.us
18probes.bl.reynolds.net.au
16no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
15covad.blackholes.us
15blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
14blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
13broadwing.blackholes.us
13a2000.blackholes.us
13blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
11yipes.blackholes.us
11olm.blackholes.us
11no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
10telstra.blackholes.us
10malaysia.blackholes.us
8epoch.blackholes.us
8dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
8owps.bl.reynolds.net.au
7maxim.blackholes.us
7blackholes.uceb.org (result 127.0.0.4 = spam source network)
7no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
6dialups.relays.osirusoft.com (result 127.0.0.4 = no reverse DNS)
6spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
5pajo.blackholes.us
5affinity.blackholes.us
5t3direct.bl.reynolds.net.au
4spamsources.relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
4relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
4spam.exsilia.net (result 127.0.0.3 = virus source)
3lauderdale.blackholes.us
3dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
3dev.null.dk
2burst.blackholes.us
2dnsbl.sorbs.net (result 127.0.0.5 = open relay)
2spamsources.relays.osirusoft.com (result 127.0.0.6 = spamhaus)
2dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
2blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
2blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
1valuenet.blackholes.us
1navisite.blackholes.us
1ciberlynx.blackholes.us
1spamguard.leadmon.net (result 127.0.0.3 = spam source)

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
11705(total number of IP addresses whose names were tested, including 429 at SDSC)
3956(union of all domain zones)
2319abuse.rfc-ignorant.org
1303rddn.bl.reynolds.net.au
665whois.rfc-ignorant.org (union of all results)
556endn.bl.reynolds.net.au
552spamdomains.blackholes.easynet.nl
426bulk.rhs.mailpolice.com
346whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
319whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
98bl.deadbeef.com
79porn.rhs.mailpolice.com
24dsn.rfc-ignorant.org (zone not intended for this use)
10postmaster.rfc-ignorant.org

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

HitsDNS Zone
7294(total number of domains tested, including 249 at SDSC)
2312(union of all domain zones)
809endn.bl.reynolds.net.au
783spamdomains.blackholes.easynet.nl
690bulk.rhs.mailpolice.com
611abuse.rfc-ignorant.org
540whois.rfc-ignorant.org (union of all results)
433whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
410dsn.rfc-ignorant.org
343postmaster.rfc-ignorant.org
107whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
81porn.rhs.mailpolice.com
36bl.deadbeef.com
29ex.dnsbl.org (union of all results)
27ex.dnsbl.org (result 127.0.0.2 = spamsites)
20rddn.bl.reynolds.net.au (zone not intended for this use)
8bandwidth-pigs.monkeys.com
2ex.dnsbl.org (result 127.0.0.3 = spam source)
1in.dnsbl.org (result 127.0.0.2 = spam source)
1in.dnsbl.org (union of all results)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 31 July 2003.