Blacklists Compared

13 September 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
155251(total number of IP addresses tested, including 470 at SDSC)
149621(union of most IP zones)
127582zen.spamhaus.org (union of all results)
113765t1.dnsbl.net.au
82235psbl.surriel.com
81170zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
80892cbl.abuseat.org
80807zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
76011dnsbl-1.uceprotect.net
70360dnsbl.sorbs.net (union of all results)
70184hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
69231dnsbl-3.uceprotect.net
67154dnsbl-2.uceprotect.net
49652no-more-funn.moensted.dk (union of all results)
49246dnsbl.sorbs.net (result 127.0.0.10 = dialup)
45086ubl.unsubscore.com
43733blackholes.five-ten-sg.com (union of all results)
39636blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
34261db.wpbl.info
34069no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
29903bl.spamcop.net
28477ix.dnsbl.manitu.net
22551zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
21003dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
13720no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
11996spam.dnsbl.sorbs.net
10486countries.blackholes.us (result 127.1.5.6 = China)
10413mail-abuse.blacklist.jippg.org
9518dnsbl.inps.de
8796bl.spamcannibal.org
7256tr.countries.nerd.dk
6388countries.blackholes.us (result 127.6.4.3 = Russia)
6098countries.blackholes.us (result 127.0.7.6 = Brazil)
6068korea.services.net
5291countries.blackholes.us (result 127.7.9.2 = Turkey)
4907countries.blackholes.us (result 127.4.1.0 = Korea)
4387spamsources.fabel.dk
3952list.dnswl.org (not a blacklist!)
3657ips.backscatterer.org
3329dnsbl.njabl.org (union of all results)
2993blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2740countries.blackholes.us (result 127.7.6.4 = Thailand)
2658hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2581dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2574countries.blackholes.us (result 127.0.3.2 = Argentina)
2568rmst.dnsbl.net.au
2270hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1587aspews.ext.sorbs.net
1413no-more-funn.moensted.dk (result 127.0.0.9 = misc)
1398countries.blackholes.us (result 127.4.8.4 = Mexico)
1058blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
809countries.blackholes.us (result 127.1.5.8 = Taiwan)
751countries.blackholes.us (result 127.3.9.2 = Japan)
746l2.bbfh.ext.sorbs.net
577dnsbl.njabl.org (result 127.0.0.4 = spam source)
410zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
402countries.blackholes.us (result 127.7.0.2 = Singapore)
339zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
295countries.blackholes.us (result 127.3.4.4 = Hong Kong)
288no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
269query.bondedsender.org (not a blacklist!)
269l1.bbfh.ext.sorbs.net
265hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
214no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
199accredit.habeas.com (not a blacklist!)
171dnsbl.njabl.org (result 127.0.0.2 = open relay)
169work.drbl.croco.net
167countries.blackholes.us (result 127.4.5.8 = Malaysia)
167iadb2.isipp.com (not a blacklist!)
156dnsbl.sorbs.net (result 127.0.0.6 = spam source)
149probes.dnsbl.net.au
138tor.dnsbl.sectoor.de (union of all results)
137tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
134iadb.isipp.com (not a blacklist!)
132bl.deadbeef.com
76l2.apews.org
60multi.surbl.org
56dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
49bl.csma.biz
48dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
46sbl.csma.biz
28exemptions.ahbl.org (not a blacklist!)
25blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
20blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
16countries.blackholes.us (result 127.5.6.6 = Nigeria)
10rdts.dnsbl.net.au
10spamguard.leadmon.net (union of all results)
6dnsbl.sorbs.net (result 127.0.0.5 = open relay)
5spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
3spam.wytnij.to
3dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
3spamguard.leadmon.net (result 127.0.0.3 = spam source)
2spamguard.leadmon.net (result 127.0.0.8 = open proxy)
2blackholes.brainerd.net
1multi.uribl.com (result 127.0.0.2 = spam resource)
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
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
1multi.uribl.com (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
155251(total number of IP addresses whose names were tested, including 470 at SDSC)
85909(union of all domain zones)
61009abuse.rfc-ignorant.org
52774rddn.dnsbl.net.au
33835dynamic.rhs.mailpolice.com
32849whois.rfc-ignorant.org (union of all results)
21406whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
18457l1.apews.org
11443whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
6651webmail.rhs.mailpolice.com
595adv.rhs.mailpolice.com
322multi.surbl.org
289dob.sibl.support-intelligence.net
251bl.deadbeef.com
206multi.uribl.com (result 127.0.0.2 = spam resource)
206multi.uribl.com (union of all results)
158bulk.rhs.mailpolice.com
82postmaster.rfc-ignorant.org
62dsn.rfc-ignorant.org (zone not intended for this use)
60rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
60bogusmx.rfc-ignorant.org
60rhsbl.sorbs.net (union of all results)
3porn.rhs.mailpolice.com
1fraud.rhs.mailpolice.com


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

HitsDNS Zone
132609(total number of domains tested, including 437 at SDSC)
26901(union of all domain zones)
14554whois.rfc-ignorant.org (union of all results)
13884whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
5201bogusmx.rfc-ignorant.org
4269abuse.rfc-ignorant.org
2501postmaster.rfc-ignorant.org
1528multi.surbl.org
1183webmail.rhs.mailpolice.com
1046multi.uribl.com (union of all results)
988multi.uribl.com (result 127.0.0.2 = spam resource)
841dsn.rfc-ignorant.org
670whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
498porn.rhs.mailpolice.com
291adv.rhs.mailpolice.com
165bulk.rhs.mailpolice.com
110dob.sibl.support-intelligence.net
74rddn.dnsbl.net.au (zone not intended for this use)
64dynamic.rhs.mailpolice.com
56multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
44rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
44rhsbl.sorbs.net (union of all results)
17ex.dnsbl.org
10l1.apews.org
3bl.deadbeef.com
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
2fraud.rhs.mailpolice.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 19 September 2008.