Blacklists Compared

13 October 2007

[ 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 hostkarma.junkemailfilter.com (127.0.0.1 result), exemptions.ahbl.org, query.bondedsender.org, list.dnswl.org, accredit.habeas.com, iadb.isipp.com, and iadb2.isipp.com zones because they are not blacklists. Because it is too aggressive to be widely useful the l2.apews.org zone is also excluded from the union.

HitsDNS Zone
256962(total number of IP addresses tested, including 498 at SDSC)
241686(union of most IP zones)
218156l2.apews.org
195611zen.spamhaus.org (union of all results)
184562t1.dnsbl.net.au
152057pbl.spamhaus.org (union of all results)
140485sbl-xbl.spamhaus.org (union of all results)
139940xbl.spamhaus.org (union of all results)
139762zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
139759cbl.abuseat.org
139744sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
139727xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
135866dnsbl.tqmcube.com (union of all results)
134644dnsbl.sorbs.net (union of all results)
123468dnsbl-3.uceprotect.net
117817zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
117817pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
113995dnsbl-2.uceprotect.net
113881dnsbl-1.uceprotect.net
112831psbl.surriel.com
107875no-more-funn.moensted.dk (union of all results)
104599dnsbl.sorbs.net (result 127.0.0.10 = dialup)
97557blackholes.five-ten-sg.com (union of all results)
92085blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
87651dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
83523no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
65591ubl.unsubscore.com
53073hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
43901dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
40705bl.spamcop.net
35068dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
34241zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
34241pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
34045ix.dnsbl.manitu.net
33922db.wpbl.info
20870no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
20785ips.backscatterer.org
17647mail-abuse.blacklist.jippg.org
15222unconfirmed.dsbl.org
15032list.dsbl.org
15013dsbl.dnsbl.net.au
14648dnsbl.tqmcube.com (result 127.0.0.5 = China)
14234countries.blackholes.us (result 127.1.5.6 = China)
10537countries.blackholes.us (result 127.0.7.6 = Brazil)
9822korea.services.net
9572dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
9235countries.blackholes.us (result 127.4.1.0 = Korea)
8657tr.countries.nerd.dk
8405countries.blackholes.us (result 127.7.9.2 = Turkey)
8058bl.csma.biz
7792countries.blackholes.us (result 127.6.4.3 = Russia)
6532countries.blackholes.us (result 127.4.8.4 = Mexico)
6404bl.spamcannibal.org
5943rmst.dnsbl.net.au
4939list.dnswl.org (not a blacklist!)
4909dnsbl.njabl.org (union of all results)
4588dnsbl.njabl.org (result 127.0.0.9 = open proxy)
4265blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4219spamsources.fabel.dk
4171countries.blackholes.us (result 127.0.3.2 = Argentina)
3968hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
3465countries.blackholes.us (result 127.3.9.2 = Japan)
3368dnsbl.ahbl.org (union of all results)
3163dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2916countries.blackholes.us (result 127.7.6.4 = Thailand)
2524probes.dnsbl.net.au
2381no-more-funn.moensted.dk (result 127.0.0.9 = misc)
2212hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1454countries.blackholes.us (result 127.1.5.8 = Taiwan)
1381countries.blackholes.us (result 127.4.5.8 = Malaysia)
1120blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
856countries.blackholes.us (result 127.3.4.4 = Hong Kong)
780zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
780xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
779sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
749zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
749sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
749sbl.spamhaus.org
689no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
561no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
424countries.blackholes.us (result 127.7.0.2 = Singapore)
396blackholes.uceb.org (union of all results)
341work.drbl.croco.net
325aspews.ext.sorbs.net
312blackholes.uceb.org (result 127.0.0.6 = spam haven)
259dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
251dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
213bl.deadbeef.com
168dnsbl.njabl.org (result 127.0.0.2 = open relay)
152dnsbl.njabl.org (result 127.0.0.4 = spam source)
147accredit.habeas.com (not a blacklist!)
142blackholes.uceb.org (result 127.0.0.3 = spam source)
141iadb2.isipp.com (not a blacklist!)
141iadb.isipp.com (not a blacklist!)
140query.bondedsender.org (not a blacklist!)
138multihop.dsbl.org
138multi.uribl.com (union of all results)
137multi.uribl.com (result 127.0.0.2 = spam resource)
129multi.surbl.org
103hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
103dnsbl.ahbl.org (result 127.0.0.4 = spam source)
87relays.nether.net
64dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
53spam.wytnij.to
49blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
38rdts.dnsbl.net.au
37blackholes.uceb.org (result 127.0.0.5 = dialup)
36dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
34blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
33blackholes.uceb.org (result 127.0.0.2 = open relay)
33spamguard.leadmon.net (union of all results)
27dnsbl.ahbl.org (result 127.0.0.15 = open relay)
25dnsbl.sorbs.net (result 127.0.0.6 = spam source)
24countries.blackholes.us (result 127.5.6.6 = Nigeria)
22exemptions.ahbl.org (not a blacklist!)
16spamguard.leadmon.net (result 127.0.0.8 = open proxy)
16blackholes.brainerd.net
11ohps.dnsbl.net.au
10spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
7spamguard.leadmon.net (result 127.0.0.3 = spam source)
7dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
4spamsites.dnsbl.net.au
4no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
3osrs.dnsbl.net.au
2owps.dnsbl.net.au
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
2blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
2sbl.csma.biz
2dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1blackholes.uceb.org (result 127.0.0.9 = uncooperative company)
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1omrs.dnsbl.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
1dob.sibl.support-intelligence.net
1dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
1dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
1tor.dnsbl.sectoor.de (union of all results)


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

HitsDNS Zone
256962(total number of IP addresses whose names were tested, including 498 at SDSC)
167214(union of all domain zones)
148415l1.apews.org
112248abuse.rfc-ignorant.org
111320rddn.dnsbl.net.au
67121dynamic.rhs.mailpolice.com
64362whois.rfc-ignorant.org (union of all results)
44037whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
20325whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
12362webmail.rhs.mailpolice.com
743multi.surbl.org
683multi.uribl.com (union of all results)
681multi.uribl.com (result 127.0.0.2 = spam resource)
566adv.rhs.mailpolice.com
255dob.sibl.support-intelligence.net
141postmaster.rfc-ignorant.org
126bl.deadbeef.com
110rhsbl.ahbl.org
105bulk.rhs.mailpolice.com
96dsn.rfc-ignorant.org (zone not intended for this use)
84bogusmx.rfc-ignorant.org
44porn.rhs.mailpolice.com
39rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
39rhsbl.sorbs.net (union of all results)
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1multi.uribl.com (result 127.0.0.4 = opt-out spam resource)


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

HitsDNS Zone
171494(total number of domains tested, including 442 at SDSC)
36016(union of all domain zones)
21528whois.rfc-ignorant.org (union of all results)
20848whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4837abuse.rfc-ignorant.org
3375bogusmx.rfc-ignorant.org
3084multi.surbl.org
2693multi.uribl.com (union of all results)
2631multi.uribl.com (result 127.0.0.2 = spam resource)
2170l1.apews.org
1812postmaster.rfc-ignorant.org
1729webmail.rhs.mailpolice.com
968dsn.rfc-ignorant.org
805porn.rhs.mailpolice.com
680whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
395rhsbl.ahbl.org
359bulk.rhs.mailpolice.com
196dob.sibl.support-intelligence.net
187adv.rhs.mailpolice.com
153rddn.dnsbl.net.au (zone not intended for this use)
120dynamic.rhs.mailpolice.com
89rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
89rhsbl.sorbs.net (union of all results)
59multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
15ex.dnsbl.org
7fraud.rhs.mailpolice.com
5bl.deadbeef.com
3multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 19 October 2007.