Blacklists Compared

10 April 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
25709(total number of IP addresses tested, including 494 at SDSC)
20439(union of most IP zones)
14819t1.dnsbl.net.au
12751blackholes.five-ten-sg.com (union of all results)
12405block.blars.org
11661blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
10963sbl-xbl.spamhaus.org (union of all results)
10548dnsbl.sorbs.net (union of all results)
9690xbl.spamhaus.org (union of all results)
9676cbl.abuseat.org
9670xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
9666sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
7291unconfirmed.dsbl.org
7268dynablock.njabl.org
7132list.dsbl.org
7131dsbl.dnsbl.net.au
6997dnsbl.sorbs.net (result 127.0.0.10 = dialup)
6225no-more-funn.moensted.dk (union of all results)
4386cn-kr.blackholes.us (union of all results)
4300dnsbl.njabl.org (union of all results)
4138sbl.csma.biz
3957bl.spamcop.net
3595ipwhois.rfc-ignorant.org
3474wpbl.dnsbl.net.au
2939psbl.surriel.com
2922no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
2768l2.spews.dnsbl.sorbs.net
2764dnsbl.ahbl.org (union of all results)
2723dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2508cn-kr.blackholes.us (result 127.0.0.2 = China)
2508china.blackholes.us
2428spews.dnsbl.net.au
2400l1.spews.dnsbl.sorbs.net
2246spam.wytnij.to
2031pdl.blackholes.us
1908bl.csma.biz
1900rmst.dnsbl.net.au
1878cn-kr.blackholes.us (result 127.0.0.3 = Korea)
1878korea.blackholes.us
1870dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1862blacklist.spambag.org
1782no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1779korea.services.net
1698dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1650dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1442spamsources.fabel.dk
1432sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1432sbl.spamhaus.org
1326unsure.nether.net
1189relays.visi.com
1107dnsbl.njabl.org (result 127.0.0.3 = dialup)
1003dnsbl.sorbs.net (result 127.0.0.6 = spam source)
956comcast.blackholes.us
883dnsbl.ahbl.org (result 127.0.0.4 = spam source)
786xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
786opm.blitzed.org
784sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
783ybl.megacity.org
735blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
707ricn.dnsbl.net.au
689spamguard.leadmon.net (union of all results)
665spamguard.leadmon.net (result 127.0.0.2 = dialup)
661pss.spambusters.org.ar
651no-more-funn.moensted.dk (result 127.0.0.9 = misc)
615no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
603brazil.blackholes.us
593probes.dnsbl.net.au
566work.drbl.croco.net
518cw.blackholes.us
436taiwan.blackholes.us
407level3.blackholes.us
376hongkong.blackholes.us
375rr.blackholes.us
365dnsbl.njabl.org (result 127.0.0.4 = spam source)
339japan.blackholes.us
323rbl.rangers.eu.org (union of all results)
285ohps.dnsbl.net.au
275no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
273charter.blackholes.us
267blackholes.intersil.net
245dnsbl.antispam.or.id
243blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
239dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
230mexico.blackholes.us
212tr.countries.nerd.dk
209wanadoo-fr.blackholes.us
207turkey.blackholes.us
185osps.dnsbl.net.au
183infolink.blackholes.us
182hil.habeas.com
163qwest.blackholes.us
146multihop.dsbl.org
144russia.blackholes.us
142argentina.blackholes.us
136relays.ordb.org
131xo.blackholes.us
128interbusiness.blackholes.us
127rbl.rangers.eu.org (result 127.0.0.4 = dialup)
126verio.blackholes.us
126dnsbl.njabl.org (result 127.0.0.2 = source or relay)
108mail-abuse.blacklist.jippg.org
104dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
104rbl.rangers.eu.org (result 127.0.0.3 = spam haven)
101dialup.blacklist.jippg.org (union of all results)
98dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
94singapore.blackholes.us
80osrs.dnsbl.net.au
77malaysia.blackholes.us
77ph.rbl.cluecentral.net
74telstra.blackholes.us
74flowgoaway.com
74dun.dnsrbl.net
71internap.blackholes.us
66relays.nether.net
613y.spam.mrs.kithrup.com
58sbbl.they.com
56dnsbl.sorbs.net (result 127.0.0.5 = open relay)
54he.blackholes.us
54bellsouth.blackholes.us
54blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
48dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
48rbl.rangers.eu.org (result 127.0.0.2 = spam source)
46rdts.dnsbl.net.au
43thailand.blackholes.us
40inflow.blackholes.us
39rogers.blackholes.us
36query.bondedsender.org (not a blacklist!)
36dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
35broadwing.blackholes.us
34cybercon.blackholes.us
28covad.blackholes.us
28a2000.blackholes.us
28blackholes.brainerd.net
27above.blackholes.us
24spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
24blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
23rackspace.blackholes.us
23nigeria.blackholes.us
23blackholes.uceb.org (union of all results)
22exemptions.ahbl.org (not a blacklist!)
21rbl.rangers.eu.org (result 127.0.0.1 = misc)
21owps.dnsbl.net.au
19swbell.blackholes.us
19rbl.rangers.eu.org (result 127.0.0.10 = virus notices)
17spamsources.yamta.org (result 127.0.0.2 = spam source)
17satos.rbl.cluecentral.net
16navisite.blackholes.us
15blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
14yipes.blackholes.us
14eli.blackholes.us
14blackholes.uceb.org (result 127.0.0.2 = open relay)
12maxim.blackholes.us
12blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
11burst.blackholes.us
10olm.blackholes.us
10affinity.blackholes.us
10bl.deadbeef.com
9blackholes.uceb.org (result 127.0.0.3 = spam source)
8epoch.blackholes.us
7pajo.blackholes.us
6no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
5blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
4spamsites.dnsbl.net.au
4relays.bl.kundenserver.de
4no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
3rbl.rangers.eu.org (result 127.0.0.5 = relay output)
3dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
3dnsbl.ahbl.org (result 127.0.0.15 = open relay)
2omrs.dnsbl.net.au
2blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1rbl.rangers.eu.org (result 127.0.0.9 = virus source)
1dev.null.dk
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)

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
25709(total number of IP addresses whose names were tested, including 494 at SDSC)
11610(union of all domain zones)
8002abuse.rfc-ignorant.org
6503rddn.dnsbl.net.au
3374whois.rfc-ignorant.org (union of all results)
2208whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1166whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
782bulk.rhs.mailpolice.com
581rhsbl.ahbl.org
414blackhole.securitysage.com
267bl.deadbeef.com
51porn.rhs.mailpolice.com
20postmaster.rfc-ignorant.org
11dsn.rfc-ignorant.org (zone not intended for this use)
1bogusmx.rfc-ignorant.org

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

HitsDNS Zone
21988(total number of domains tested, including 536 at SDSC)
6888(union of all domain zones)
2590whois.rfc-ignorant.org (union of all results)
2243whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2011abuse.rfc-ignorant.org
1699bulk.rhs.mailpolice.com
1411rhsbl.ahbl.org
904blackhole.securitysage.com
875postmaster.rfc-ignorant.org
799dsn.rfc-ignorant.org
347whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
287bogusmx.rfc-ignorant.org
108bl.deadbeef.com
83porn.rhs.mailpolice.com
43ex.dnsbl.org (union of all results)
42ex.dnsbl.org (result 127.0.0.2 = spamsites)
32rddn.dnsbl.net.au (zone not intended for this use)
27rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
27rhsbl.sorbs.net (union of all results)
2rhsbl.sorbs.net (result 127.0.0.12 = domain does not send mail)
2ex.dnsbl.org (result 127.0.0.3 = spam source)
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 29 April 2004.