Blacklists Compared

17 July 2004

[ 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 exemptions.ahbl.org and query.bondedsender.org zones because they are not blacklists, and because it is too aggressive to be widely useful the block.blars.org zone is also excluded.

HitsDNS Zone
26540(total number of IP addresses tested, including 391 at SDSC)
21365(union of most IP zones)
15718t1.dnsbl.net.au
15209block.blars.org
13569blackholes.five-ten-sg.com (union of all results)
12900blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
11101dnsbl.sorbs.net (union of all results)
9031sbl-xbl.spamhaus.org (union of all results)
8051dynablock.njabl.org
7823xbl.spamhaus.org (union of all results)
7799dnsbl.sorbs.net (result 127.0.0.10 = dialup)
7645cbl.abuseat.org
7640xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
7640sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
7346unconfirmed.dsbl.org
7238list.dsbl.org
7237dsbl.dnsbl.net.au
6657no-more-funn.moensted.dk (union of all results)
5365cn-kr.blackholes.us (union of all results)
4754psbl.surriel.com
3886ipwhois.rfc-ignorant.org
3861dnsbl.njabl.org (union of all results)
3709bl.spamcop.net
3707sbl.csma.biz
3330no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
3063cn-kr.blackholes.us (result 127.0.0.3 = Korea)
3063korea.blackholes.us
2916korea.services.net
2770dnsbl.ahbl.org (union of all results)
2760rmst.dnsbl.net.au
2412l2.spews.dnsbl.sorbs.net
2375wpbl.dnsbl.net.au
2302cn-kr.blackholes.us (result 127.0.0.2 = China)
2302china.blackholes.us
2201blacklist.spambag.org
1980l1.spews.dnsbl.sorbs.net
1976spews.dnsbl.net.au
1959pdl.blackholes.us
1928dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1906no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1691dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1565spamsources.fabel.dk
1545dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1479dnsbl.njabl.org (result 127.0.0.3 = dialup)
1419dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1348unsure.nether.net
1281sbl.spamhaus.org
1278sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1102bl.csma.biz
1069work.drbl.croco.net
1042spam.wytnij.to
1037ricn.dnsbl.net.au
1020dnsbl.ahbl.org (result 127.0.0.4 = spam source)
1012xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1012sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1011opm.blitzed.org
993dnsbl.sorbs.net (result 127.0.0.6 = spam source)
686dun.dnsrbl.net
673no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
665level3.blackholes.us
602spamguard.leadmon.net (union of all results)
588probes.dnsbl.net.au
585no-more-funn.moensted.dk (result 127.0.0.9 = misc)
579japan.blackholes.us
574brazil.blackholes.us
568ybl.megacity.org
557comcast.blackholes.us
534spamguard.leadmon.net (result 127.0.0.2 = dialup)
486cw.blackholes.us
413dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
400taiwan.blackholes.us
388rr.blackholes.us
387dnsbl.antispam.or.id
369blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
311dnsbl.rangers.eu.org (union of all results)
298charter.blackholes.us
290dnsbl.njabl.org (result 127.0.0.2 = source or relay)
279relays.ordb.org
260relays.visi.com
259blackholes.intersil.net
244dialup.blacklist.jippg.org (union of all results)
242dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
222blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
208no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
205wanadoo-fr.blackholes.us
198hongkong.blackholes.us
192turkey.blackholes.us
192tr.countries.nerd.dk
186qwest.blackholes.us
181mexico.blackholes.us
178interbusiness.blackholes.us
177dnsbl.njabl.org (result 127.0.0.4 = spam source)
164dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
158dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
132flowgoaway.com
118verio.blackholes.us
116russia.blackholes.us
109ohps.dnsbl.net.au
103argentina.blackholes.us
100multihop.dsbl.org
93xo.blackholes.us
89infolink.blackholes.us
87dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
77osps.dnsbl.net.au
74osrs.dnsbl.net.au
73relays.nether.net
68spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
68ph.rbl.cluecentral.net
63internap.blackholes.us
62he.blackholes.us
62bellsouth.blackholes.us
61dnsbl.sorbs.net (result 127.0.0.5 = open relay)
54malaysia.blackholes.us
54dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
47singapore.blackholes.us
47rogers.blackholes.us
47inflow.blackholes.us
47mail-abuse.blacklist.jippg.org
46above.blackholes.us
45thailand.blackholes.us
43dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
42cybercon.blackholes.us
38yipes.blackholes.us
36query.bondedsender.org (not a blacklist!)
34blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
31swbell.blackholes.us
30blackholes.uceb.org (union of all results)
28dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
28blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
28blackholes.brainerd.net
27telstra.blackholes.us
26covad.blackholes.us
21rackspace.blackholes.us
20eli.blackholes.us
20sbbl.they.com
19exemptions.ahbl.org (not a blacklist!)
17a2000.blackholes.us
16dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
15rdts.dnsbl.net.au
15hil.habeas.com
15satos.rbl.cluecentral.net
14olm.blackholes.us
14nigeria.blackholes.us
14broadwing.blackholes.us
14blackholes.uceb.org (result 127.0.0.2 = open relay)
12blackholes.uceb.org (result 127.0.0.3 = spam source)
11blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
9affinity.blackholes.us
9bl.deadbeef.com
9dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
8relays.bl.kundenserver.de
7pajo.blackholes.us
7epoch.blackholes.us
7dnsbl.ahbl.org (result 127.0.0.15 = open relay)
6navisite.blackholes.us
6maxim.blackholes.us
6burst.blackholes.us
4blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
3ciberlynx.blackholes.us
3blackholes.uceb.org (result 127.0.0.6 = spam haven)
3omrs.dnsbl.net.au
3spam.dnsrbl.net
2dev.null.dk
2dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
2no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
2no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
1blackholes.uceb.org (result 127.0.0.4 = spam source network)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1owps.dnsbl.net.au
1spamsites.dnsbl.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1dnsbl.ahbl.org (result 127.0.0.17 = worm source)
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
1dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)

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.

Survey results for all known public domain-name-based DNS blacklists. Lookups were done on the domain names of connecting IP addresses.

HitsDNS Zone
26540(total number of IP addresses whose names were tested, including 391 at SDSC)
12180(union of all domain zones)
8843abuse.rfc-ignorant.org
6896rddn.dnsbl.net.au
3329whois.rfc-ignorant.org (union of all results)
2116whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1214whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
869bulk.rhs.mailpolice.com
671rhsbl.ahbl.org
215bl.deadbeef.com
189blackhole.securitysage.com
24porn.rhs.mailpolice.com
22postmaster.rfc-ignorant.org
16dsn.rfc-ignorant.org (zone not intended for this use)
2bogusmx.rfc-ignorant.org

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

HitsDNS Zone
24316(total number of domains tested, including 271 at SDSC)
7346(union of all domain zones)
3368whois.rfc-ignorant.org (union of all results)
2907whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2223abuse.rfc-ignorant.org
1115rhsbl.ahbl.org
1103bulk.rhs.mailpolice.com
961postmaster.rfc-ignorant.org
753dsn.rfc-ignorant.org
461whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
354blackhole.securitysage.com
249bogusmx.rfc-ignorant.org
193bl.deadbeef.com
59ex.dnsbl.org (union of all results)
58porn.rhs.mailpolice.com
55ex.dnsbl.org (result 127.0.0.2 = spamsites)
46rddn.dnsbl.net.au (zone not intended for this use)
35rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
35rhsbl.sorbs.net (union of all results)
5cart00ney.surriel.com
4ex.dnsbl.org (result 127.0.0.3 = spam source)
1rhsbl.sorbs.net (result 127.0.0.12 = domain does not send mail)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 25 July 2004.