Blacklists Compared

25 October 2008

[ 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
118331(total number of IP addresses tested, including 453 at SDSC)
112296(union of most IP zones)
95046zen.spamhaus.org (union of all results)
85471t1.dnsbl.net.au
71568b.barracudacentral.org
68712cbl.abuseat.org
68624zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
57139zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
54588dnsbl-1.uceprotect.net
53909dnsbl-3.uceprotect.net
52521hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
49510dnsbl.sorbs.net (union of all results)
47879dnsbl-2.uceprotect.net
46369psbl.surriel.com
36755no-more-funn.moensted.dk (union of all results)
34856ubl.unsubscore.com
33745dnsbl.sorbs.net (result 127.0.0.10 = dialup)
29997blackholes.five-ten-sg.com (union of all results)
26717blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
24484no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
24113ix.dnsbl.manitu.net
22757bl.spamcop.net
16735db.wpbl.info
16516zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
15614dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
10290spam.dnsbl.sorbs.net
9539no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
7400bl.spamcannibal.org
7361countries.blackholes.us (result 127.1.5.6 = China)
7023dnsbl.inps.de
6053ips.backscatterer.org
5525tr.countries.nerd.dk
5035countries.blackholes.us (result 127.6.4.3 = Russia)
4933countries.blackholes.us (result 127.0.7.6 = Brazil)
4530list.dnswl.org (not a blacklist!)
4265korea.services.net
4020sbl.csma.biz
3959countries.blackholes.us (result 127.7.9.2 = Turkey)
3837bl.csma.biz
3498spamsources.fabel.dk
3435countries.blackholes.us (result 127.4.1.0 = Korea)
3192mail-abuse.blacklist.jippg.org
2832hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2613hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
2325dnsbl.njabl.org (union of all results)
2315blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2289rmst.dnsbl.net.au
2116countries.blackholes.us (result 127.0.3.2 = Argentina)
2049no-more-funn.moensted.dk (result 127.0.0.9 = misc)
1816dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1781countries.blackholes.us (result 127.3.9.2 = Japan)
1173countries.blackholes.us (result 127.7.6.4 = Thailand)
1152aspews.ext.sorbs.net
980countries.blackholes.us (result 127.4.8.4 = Mexico)
908blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
566no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
521countries.blackholes.us (result 127.1.5.8 = Taiwan)
414dnsbl.njabl.org (result 127.0.0.4 = spam source)
396zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
296query.bondedsender.org (not a blacklist!)
255countries.blackholes.us (result 127.3.4.4 = Hong Kong)
245countries.blackholes.us (result 127.7.0.2 = Singapore)
241zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
197accredit.habeas.com (not a blacklist!)
182dnsbl.sorbs.net (result 127.0.0.6 = spam source)
182hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
162iadb2.isipp.com (not a blacklist!)
156no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
153work.drbl.croco.net
132countries.blackholes.us (result 127.4.5.8 = Malaysia)
122iadb.isipp.com (not a blacklist!)
105probes.dnsbl.net.au
95dnsbl.njabl.org (result 127.0.0.2 = open relay)
80tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
80tor.dnsbl.sectoor.de (union of all results)
70l2.bbfh.ext.sorbs.net
68bl.deadbeef.com
44dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
42dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
40multi.surbl.org
38blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
37exemptions.ahbl.org (not a blacklist!)
32l2.apews.org
30dnsbl-0.uceprotect.net
17blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
9spam.wytnij.to
7rdts.dnsbl.net.au
7spamguard.leadmon.net (union of all results)
6countries.blackholes.us (result 127.5.6.6 = Nigeria)
5dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
5spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
4dnsbl.sorbs.net (result 127.0.0.5 = open relay)
2multi.uribl.com (result 127.0.0.2 = spam resource)
2multi.uribl.com (union of all results)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1spamguard.leadmon.net (result 127.0.0.8 = open proxy)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1dob.sibl.support-intelligence.net
1blackholes.brainerd.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
118331(total number of IP addresses whose names were tested, including 453 at SDSC)
63735(union of all domain zones)
46335abuse.rfc-ignorant.org
37664rddn.dnsbl.net.au
25837whois.rfc-ignorant.org (union of all results)
24159dynamic.rhs.mailpolice.com
16350whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
14899l1.apews.org
9487whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
5133webmail.rhs.mailpolice.com
736adv.rhs.mailpolice.com
279bl.deadbeef.com
152multi.surbl.org
117multi.uribl.com (union of all results)
116multi.uribl.com (result 127.0.0.2 = spam resource)
101postmaster.rfc-ignorant.org
68bogusmx.rfc-ignorant.org
61dsn.rfc-ignorant.org (zone not intended for this use)
44bulk.rhs.mailpolice.com
34rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
34rhsbl.sorbs.net (union of all results)
25dob.sibl.support-intelligence.net
6porn.rhs.mailpolice.com
1multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
1ex.dnsbl.org


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

HitsDNS Zone
96072(total number of domains tested, including 413 at SDSC)
21655(union of all domain zones)
12044whois.rfc-ignorant.org (union of all results)
11467whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3988abuse.rfc-ignorant.org
3429bogusmx.rfc-ignorant.org
1991postmaster.rfc-ignorant.org
1076multi.surbl.org
1049webmail.rhs.mailpolice.com
879multi.uribl.com (union of all results)
833multi.uribl.com (result 127.0.0.2 = spam resource)
709dsn.rfc-ignorant.org
577whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
322adv.rhs.mailpolice.com
312porn.rhs.mailpolice.com
108bulk.rhs.mailpolice.com
49rddn.dnsbl.net.au (zone not intended for this use)
41multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
39dynamic.rhs.mailpolice.com
38rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
38rhsbl.sorbs.net (union of all results)
31dob.sibl.support-intelligence.net
12ex.dnsbl.org
12l1.apews.org
5multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
3bl.deadbeef.com
1fraud.rhs.mailpolice.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 31 October 2008.