Blacklists Compared

15 December 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
245715(total number of IP addresses tested, including 496 at SDSC)
231153(union of most IP zones)
202175l2.apews.org
191579zen.spamhaus.org (union of all results)
175251t1.dnsbl.net.au
154140pbl.spamhaus.org (union of all results)
125539sbl-xbl.spamhaus.org (union of all results)
125090dnsbl-3.uceprotect.net
124960xbl.spamhaus.org (union of all results)
124791cbl.abuseat.org
124749xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
124749sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
124708zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
124574psbl.surriel.com
122023dnsbl.sorbs.net (union of all results)
121991pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
121926zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
116945dnsbl.tqmcube.com (union of all results)
116555dnsbl-2.uceprotect.net
111675dnsbl-1.uceprotect.net
98117dnsbl.sorbs.net (result 127.0.0.10 = dialup)
93205no-more-funn.moensted.dk (union of all results)
84021blackholes.five-ten-sg.com (union of all results)
83642dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
82767no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
82135ubl.unsubscore.com
77591blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
62062hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
43519bl.spamcop.net
37397dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
35485db.wpbl.info
32149zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
32149pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
29752ix.dnsbl.manitu.net
24880dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
13932unconfirmed.dsbl.org
13753list.dsbl.org
13737dsbl.dnsbl.net.au
13541mail-abuse.blacklist.jippg.org
12669ips.backscatterer.org
11919bl.spamcannibal.org
11902sbl.csma.biz
11518bl.csma.biz
11237countries.blackholes.us (result 127.0.7.6 = Brazil)
9689tr.countries.nerd.dk
8843countries.blackholes.us (result 127.7.9.2 = Turkey)
8291no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
7363countries.blackholes.us (result 127.6.4.3 = Russia)
6593countries.blackholes.us (result 127.4.8.4 = Mexico)
6168rmst.dnsbl.net.au
5176list.dnswl.org (not a blacklist!)
5020blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4999dnsbl.tqmcube.com (result 127.0.0.5 = China)
4947countries.blackholes.us (result 127.1.5.6 = China)
4490countries.blackholes.us (result 127.0.3.2 = Argentina)
4349dnsbl.njabl.org (union of all results)
4164korea.services.net
4001dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
3998dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3802countries.blackholes.us (result 127.4.1.0 = Korea)
2775countries.blackholes.us (result 127.7.6.4 = Thailand)
2740dnsbl.ahbl.org (union of all results)
2575dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2480hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2381countries.blackholes.us (result 127.3.9.2 = Japan)
2335spamsources.fabel.dk
1534no-more-funn.moensted.dk (result 127.0.0.9 = misc)
1435probes.dnsbl.net.au
1331blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1232countries.blackholes.us (result 127.4.5.8 = Malaysia)
1121hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
903countries.blackholes.us (result 127.1.5.8 = Taiwan)
715zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
715xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
715sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
674zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
674sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
674sbl.spamhaus.org
656countries.blackholes.us (result 127.3.4.4 = Hong Kong)
469aspews.ext.sorbs.net
456no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
397countries.blackholes.us (result 127.7.0.2 = Singapore)
273work.drbl.croco.net
248blackholes.uceb.org (union of all results)
244no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
223dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
222dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
203blackholes.uceb.org (result 127.0.0.6 = spam haven)
185dnsbl.njabl.org (result 127.0.0.2 = open relay)
173query.bondedsender.org (not a blacklist!)
166dnsbl.njabl.org (result 127.0.0.4 = spam source)
161accredit.habeas.com (not a blacklist!)
160iadb2.isipp.com (not a blacklist!)
160iadb.isipp.com (not a blacklist!)
143hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
125multihop.dsbl.org
111dnsbl.ahbl.org (result 127.0.0.4 = spam source)
107bl.deadbeef.com
106blackholes.uceb.org (result 127.0.0.3 = spam source)
81multi.surbl.org
73relays.nether.net
56multi.uribl.com (result 127.0.0.2 = spam resource)
56multi.uribl.com (union of all results)
53blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
49exemptions.ahbl.org (not a blacklist!)
40dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
34dnsbl.sorbs.net (result 127.0.0.6 = spam source)
33rdts.dnsbl.net.au
30spam.wytnij.to
27dnsbl.ahbl.org (result 127.0.0.15 = open relay)
24blackholes.uceb.org (result 127.0.0.2 = open relay)
24blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
22countries.blackholes.us (result 127.5.6.6 = Nigeria)
18spamguard.leadmon.net (union of all results)
12blackholes.uceb.org (result 127.0.0.5 = dialup)
12dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
10dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
9spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
9blackholes.brainerd.net
8spamguard.leadmon.net (result 127.0.0.8 = open proxy)
5ohps.dnsbl.net.au
4osrs.dnsbl.net.au
3osps.dnsbl.net.au
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2spamsites.dnsbl.net.au
2no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
2dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
2dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
1owps.dnsbl.net.au
1ricn.dnsbl.net.au
1omrs.dnsbl.net.au
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
1dob.sibl.support-intelligence.net
1dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)


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

HitsDNS Zone
245715(total number of IP addresses whose names were tested, including 496 at SDSC)
165312(union of all domain zones)
140255l1.apews.org
108212rddn.dnsbl.net.au
105274abuse.rfc-ignorant.org
69067dynamic.rhs.mailpolice.com
67708whois.rfc-ignorant.org (union of all results)
46082whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
21627whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
11383webmail.rhs.mailpolice.com
958multi.surbl.org
794multi.uribl.com (union of all results)
792multi.uribl.com (result 127.0.0.2 = spam resource)
612adv.rhs.mailpolice.com
154bl.deadbeef.com
118postmaster.rfc-ignorant.org
113rhsbl.ahbl.org
98bogusmx.rfc-ignorant.org
91dsn.rfc-ignorant.org (zone not intended for this use)
80bulk.rhs.mailpolice.com
32porn.rhs.mailpolice.com
21rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
21rhsbl.sorbs.net (union of all results)
20dob.sibl.support-intelligence.net
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)
1blackhole.securitysage.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
178778(total number of domains tested, including 453 at SDSC)
41674(union of all domain zones)
24265whois.rfc-ignorant.org (union of all results)
23637whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
7505bogusmx.rfc-ignorant.org
4288abuse.rfc-ignorant.org
3073multi.surbl.org
2417multi.uribl.com (union of all results)
2333multi.uribl.com (result 127.0.0.2 = spam resource)
1914l1.apews.org
1414postmaster.rfc-ignorant.org
1376webmail.rhs.mailpolice.com
835dsn.rfc-ignorant.org
814porn.rhs.mailpolice.com
628whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
381bulk.rhs.mailpolice.com
344rhsbl.ahbl.org
216adv.rhs.mailpolice.com
170blackhole.securitysage.com
158rddn.dnsbl.net.au (zone not intended for this use)
137dynamic.rhs.mailpolice.com
77multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
63rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
63rhsbl.sorbs.net (union of all results)
55dob.sibl.support-intelligence.net
7multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
5fraud.rhs.mailpolice.com
3bl.deadbeef.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 21 December 2007.