Blacklists Compared

3 January 2009

[ 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
66653(total number of IP addresses tested, including 182 at SDSC)
63811(union of most IP zones)
55871zen.spamhaus.org (union of all results)
53210l2.apews.org
50133t1.dnsbl.net.au
45048cbl.abuseat.org
45006zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
43816b.barracudacentral.org
35942zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
31944dnsbl-1.uceprotect.net
30646dnsbl-3.uceprotect.net
28242dnsbl-2.uceprotect.net
26867psbl.surriel.com
26639ubl.unsubscore.com
23991dnsbl.sorbs.net (union of all results)
20533no-more-funn.moensted.dk (union of all results)
20075blackholes.five-ten-sg.com (union of all results)
17364blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
15826dnsbl.sorbs.net (result 127.0.0.10 = dialup)
12372hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
10871bl.spamcop.net
10742no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
8494zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
8483ix.dnsbl.manitu.net
8147no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
8099dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
7413countries.blackholes.us (result 127.1.5.6 = China)
7041db.wpbl.info
6223spam.dnsbl.sorbs.net
3780bl.spamcannibal.org
3221tr.countries.nerd.dk
3050spamsources.fabel.dk
2948dnsbl.inps.de
2924countries.blackholes.us (result 127.0.7.6 = Brazil)
2731korea.services.net
2582list.dnswl.org (not a blacklist!)
2195mail-abuse.blacklist.jippg.org
2139countries.blackholes.us (result 127.7.9.2 = Turkey)
2074countries.blackholes.us (result 127.4.1.0 = Korea)
2059countries.blackholes.us (result 127.6.4.3 = Russia)
1951blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
1916hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1513hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1483dnsbl.njabl.org (union of all results)
1462no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1232dnsbl.njabl.org (result 127.0.0.9 = open proxy)
989ips.backscatterer.org
988rmst.dnsbl.net.au
891countries.blackholes.us (result 127.7.6.4 = Thailand)
848aspews.ext.sorbs.net
812countries.blackholes.us (result 127.0.3.2 = Argentina)
740blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
450zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
408countries.blackholes.us (result 127.1.5.8 = Taiwan)
377countries.blackholes.us (result 127.3.9.2 = Japan)
270query.bondedsender.org (not a blacklist!)
238countries.blackholes.us (result 127.4.8.4 = Mexico)
222dnsbl.njabl.org (result 127.0.0.4 = spam source)
197countries.blackholes.us (result 127.7.0.2 = Singapore)
172accredit.habeas.com (not a blacklist!)
165no-more-funn.moensted.dk (result 127.0.0.9 = misc)
155countries.blackholes.us (result 127.3.4.4 = Hong Kong)
137zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
135hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
132dnsbl.sorbs.net (result 127.0.0.6 = spam source)
112iadb2.isipp.com (not a blacklist!)
83iadb.isipp.com (not a blacklist!)
82work.drbl.croco.net
72countries.blackholes.us (result 127.4.5.8 = Malaysia)
67tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
67tor.dnsbl.sectoor.de (union of all results)
63dnsbl.ahbl.org (union of all results)
61spamguard.leadmon.net (union of all results)
59spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
50no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
49bl.deadbeef.com
44l2.bbfh.ext.sorbs.net
41probes.dnsbl.net.au
37dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
29dnsbl.njabl.org (result 127.0.0.2 = open relay)
28dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
28dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
26dnsbl.ahbl.org (result 127.0.0.4 = spam source)
20dnsbl-0.uceprotect.net
13blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
6blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
5countries.blackholes.us (result 127.5.6.6 = Nigeria)
5multi.surbl.org
3spam.wytnij.to
3dnsbl.sorbs.net (result 127.0.0.5 = open relay)
3blackholes.brainerd.net
2multi.uribl.com (result 127.0.0.2 = spam resource)
2rdts.dnsbl.net.au
2multi.uribl.com (union of all results)
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 127.0.0.11 = TCPA violator)
1dob.sibl.support-intelligence.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
66653(total number of IP addresses whose names were tested, including 182 at SDSC)
32773(union of all domain zones)
24880l1.apews.org
23289abuse.rfc-ignorant.org
17584rddn.dnsbl.net.au
13064whois.rfc-ignorant.org (union of all results)
12098dynamic.rhs.mailpolice.com
8619whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4445whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1869webmail.rhs.mailpolice.com
508adv.rhs.mailpolice.com
286rhsbl.ahbl.org
168multi.surbl.org
151multi.uribl.com (result 127.0.0.2 = spam resource)
151multi.uribl.com (union of all results)
43bulk.rhs.mailpolice.com
30rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
30rhsbl.sorbs.net (union of all results)
29postmaster.rfc-ignorant.org
27dob.sibl.support-intelligence.net
22dsn.rfc-ignorant.org (zone not intended for this use)
21bogusmx.rfc-ignorant.org
4bl.deadbeef.com
3porn.rhs.mailpolice.com


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

HitsDNS Zone
37331(total number of domains tested, including 146 at SDSC)
10101(union of all domain zones)
3760whois.rfc-ignorant.org (union of all results)
3433whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2577bogusmx.rfc-ignorant.org
1979postmaster.rfc-ignorant.org
1756abuse.rfc-ignorant.org
1062multi.surbl.org
879l1.apews.org
786multi.uribl.com (union of all results)
760multi.uribl.com (result 127.0.0.2 = spam resource)
637webmail.rhs.mailpolice.com
337dsn.rfc-ignorant.org
327whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
219adv.rhs.mailpolice.com
137porn.rhs.mailpolice.com
135bulk.rhs.mailpolice.com
105rhsbl.ahbl.org
30rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
30rhsbl.sorbs.net (union of all results)
25multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
12rddn.dnsbl.net.au (zone not intended for this use)
11ex.dnsbl.org
10dob.sibl.support-intelligence.net
2dynamic.rhs.mailpolice.com
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1fraud.rhs.mailpolice.com
1bl.deadbeef.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 9 January 2009.