Blacklists Compared

29 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
265030(total number of IP addresses tested, including 450 at SDSC)
253233(union of most IP zones)
224211l2.apews.org
216889zen.spamhaus.org (union of all results)
199358t1.dnsbl.net.au
177262pbl.spamhaus.org (union of all results)
143835sbl-xbl.spamhaus.org (union of all results)
143141zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
143077xbl.spamhaus.org (union of all results)
143058sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
142996cbl.abuseat.org
142869xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
140599dnsbl-3.uceprotect.net
138188dnsbl.sorbs.net (union of all results)
133372dnsbl-2.uceprotect.net
132637zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
132533pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
130006dnsbl.tqmcube.com (union of all results)
117030dnsbl-1.uceprotect.net
114637ubl.unsubscore.com
108548dnsbl.sorbs.net (result 127.0.0.10 = dialup)
106877no-more-funn.moensted.dk (union of all results)
94454no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
92396blackholes.five-ten-sg.com (union of all results)
91655dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
87224blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
71167psbl.surriel.com
67404hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
58178sbl.csma.biz
58089bl.csma.biz
44729pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
44626zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
41394bl.spamcop.net
40911dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
39458ix.dnsbl.manitu.net
39048db.wpbl.info
30947dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
16181tr.countries.nerd.dk
16054dsbl.dnsbl.net.au
15883unconfirmed.dsbl.org
15838list.dsbl.org
15010countries.blackholes.us (result 127.7.9.2 = Turkey)
14567bl.spamcannibal.org
14262mail-abuse.blacklist.jippg.org
11152ips.backscatterer.org
10599no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
10124countries.blackholes.us (result 127.0.7.6 = Brazil)
7250countries.blackholes.us (result 127.6.4.3 = Russia)
6314rmst.dnsbl.net.au
6126korea.services.net
5907dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
5810dnsbl.tqmcube.com (result 127.0.0.5 = China)
5736countries.blackholes.us (result 127.1.5.6 = China)
5623countries.blackholes.us (result 127.4.1.0 = Korea)
4717dnsbl.njabl.org (union of all results)
4466dnsbl.njabl.org (result 127.0.0.9 = open proxy)
4319blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4204countries.blackholes.us (result 127.0.3.2 = Argentina)
4106list.dnswl.org (not a blacklist!)
3333countries.blackholes.us (result 127.7.6.4 = Thailand)
3133dnsbl.ahbl.org (union of all results)
3046countries.blackholes.us (result 127.3.9.2 = Japan)
2921countries.blackholes.us (result 127.4.8.4 = Mexico)
2907dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2728spamsources.fabel.dk
1884hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1748countries.blackholes.us (result 127.4.5.8 = Malaysia)
1386hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
1290no-more-funn.moensted.dk (result 127.0.0.9 = misc)
1190probes.dnsbl.net.au
956countries.blackholes.us (result 127.1.5.8 = Taiwan)
785blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
760countries.blackholes.us (result 127.3.4.4 = Hong Kong)
687zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
686zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
686sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
686sbl.spamhaus.org
685sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
684xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
527countries.blackholes.us (result 127.7.0.2 = Singapore)
432no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
314aspews.ext.sorbs.net
287blackholes.uceb.org (union of all results)
282work.drbl.croco.net
238blackholes.uceb.org (result 127.0.0.6 = spam haven)
228dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
206dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
201no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
165bl.deadbeef.com
142accredit.habeas.com (not a blacklist!)
142dnsbl.ahbl.org (result 127.0.0.4 = spam source)
130dnsbl.njabl.org (result 127.0.0.2 = open relay)
122query.bondedsender.org (not a blacklist!)
120dnsbl.njabl.org (result 127.0.0.4 = spam source)
118iadb2.isipp.com (not a blacklist!)
118iadb.isipp.com (not a blacklist!)
116blackholes.uceb.org (result 127.0.0.3 = spam source)
108multihop.dsbl.org
103hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
70relays.nether.net
69multi.surbl.org
68exemptions.ahbl.org (not a blacklist!)
63multi.uribl.com (union of all results)
61multi.uribl.com (result 127.0.0.2 = spam resource)
58dnsbl.sorbs.net (result 127.0.0.6 = spam source)
51dnsbl.ahbl.org (result 127.0.0.15 = open relay)
46blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
32blackholes.uceb.org (result 127.0.0.2 = open relay)
26dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
25countries.blackholes.us (result 127.5.6.6 = Nigeria)
24spamguard.leadmon.net (union of all results)
21blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
20rdts.dnsbl.net.au
18dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
16blackholes.brainerd.net
11spam.wytnij.to
10spamguard.leadmon.net (result 127.0.0.8 = open proxy)
9dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
8ohps.dnsbl.net.au
7spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
7spamguard.leadmon.net (result 127.0.0.3 = spam source)
6no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
5blackholes.uceb.org (result 127.0.0.5 = dialup)
3owps.dnsbl.net.au
3spamsites.dnsbl.net.au
3osrs.dnsbl.net.au
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2osps.dnsbl.net.au
2dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
2dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
2dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
1omrs.dnsbl.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
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
265030(total number of IP addresses whose names were tested, including 450 at SDSC)
177326(union of all domain zones)
153131l1.apews.org
118087rddn.dnsbl.net.au
109597abuse.rfc-ignorant.org
71024dynamic.rhs.mailpolice.com
69774whois.rfc-ignorant.org (union of all results)
44764whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
25011whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
11127webmail.rhs.mailpolice.com
810multi.surbl.org
723multi.uribl.com (union of all results)
722multi.uribl.com (result 127.0.0.2 = spam resource)
382adv.rhs.mailpolice.com
122bl.deadbeef.com
99postmaster.rfc-ignorant.org
76rhsbl.ahbl.org
72bogusmx.rfc-ignorant.org
67bulk.rhs.mailpolice.com
54dsn.rfc-ignorant.org (zone not intended for this use)
35rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
35rhsbl.sorbs.net (union of all results)
33porn.rhs.mailpolice.com
3blackhole.securitysage.com
3dob.sibl.support-intelligence.net
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
185493(total number of domains tested, including 422 at SDSC)
43918(union of all domain zones)
27168whois.rfc-ignorant.org (union of all results)
23802whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
7328bogusmx.rfc-ignorant.org
4721abuse.rfc-ignorant.org
3366whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
2508multi.surbl.org
1974multi.uribl.com (union of all results)
1919multi.uribl.com (result 127.0.0.2 = spam resource)
1867l1.apews.org
1564postmaster.rfc-ignorant.org
1513webmail.rhs.mailpolice.com
894rhsbl.ahbl.org
804dsn.rfc-ignorant.org
786porn.rhs.mailpolice.com
349bulk.rhs.mailpolice.com
177blackhole.securitysage.com
174adv.rhs.mailpolice.com
162rddn.dnsbl.net.au (zone not intended for this use)
145dynamic.rhs.mailpolice.com
65rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
65rhsbl.sorbs.net (union of all results)
52multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
14dob.sibl.support-intelligence.net
3multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
3fraud.rhs.mailpolice.com
3bl.deadbeef.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 3 January 2008.