Blacklists Compared

3 November 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
229552(total number of IP addresses tested, including 495 at SDSC)
219799(union of most IP zones)
200806l2.apews.org
192770zen.spamhaus.org (union of all results)
179771t1.dnsbl.net.au
149686pbl.spamhaus.org (union of all results)
145953sbl-xbl.spamhaus.org (union of all results)
145449xbl.spamhaus.org (union of all results)
145431cbl.abuseat.org
145342zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
145281xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
145266sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
121386dnsbl.sorbs.net (union of all results)
118169dnsbl.tqmcube.com (union of all results)
116775dnsbl-3.uceprotect.net
115412zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
115369pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
111399psbl.surriel.com
106801dnsbl-2.uceprotect.net
100585no-more-funn.moensted.dk (union of all results)
98981dnsbl.sorbs.net (result 127.0.0.10 = dialup)
98087dnsbl-1.uceprotect.net
91108blackholes.five-ten-sg.com (union of all results)
85871dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
85278blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
82925no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
63791ubl.unsubscore.com
42560hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
41041bl.spamcop.net
34319zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
34319pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
33311db.wpbl.info
30311dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
24957ix.dnsbl.manitu.net
24337dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
15293unconfirmed.dsbl.org
15141list.dsbl.org
15139dsbl.dnsbl.net.au
14090no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
14037mail-abuse.blacklist.jippg.org
11908countries.blackholes.us (result 127.0.7.6 = Brazil)
10800dnsbl.tqmcube.com (result 127.0.0.5 = China)
10568countries.blackholes.us (result 127.1.5.6 = China)
9952countries.blackholes.us (result 127.6.4.3 = Russia)
9565tr.countries.nerd.dk
9096countries.blackholes.us (result 127.7.9.2 = Turkey)
8965ips.backscatterer.org
7366bl.csma.biz
6259bl.spamcannibal.org
5341korea.services.net
5157rmst.dnsbl.net.au
5017dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
5013countries.blackholes.us (result 127.4.1.0 = Korea)
4932countries.blackholes.us (result 127.4.8.4 = Mexico)
4625blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4611dnsbl.njabl.org (union of all results)
4377list.dnswl.org (not a blacklist!)
4364dnsbl.njabl.org (result 127.0.0.9 = open proxy)
4174countries.blackholes.us (result 127.0.3.2 = Argentina)
3196hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
3159countries.blackholes.us (result 127.7.6.4 = Thailand)
3130dnsbl.ahbl.org (union of all results)
3056spamsources.fabel.dk
2939dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2528no-more-funn.moensted.dk (result 127.0.0.9 = misc)
2278countries.blackholes.us (result 127.3.9.2 = Japan)
2096probes.dnsbl.net.au
1970hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1561countries.blackholes.us (result 127.4.5.8 = Malaysia)
1139blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
915countries.blackholes.us (result 127.1.5.8 = Taiwan)
805no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
729zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
729xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
729sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
698zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
698sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
674sbl.spamhaus.org
485countries.blackholes.us (result 127.3.4.4 = Hong Kong)
379countries.blackholes.us (result 127.7.0.2 = Singapore)
331no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
308blackholes.uceb.org (union of all results)
273work.drbl.croco.net
252aspews.ext.sorbs.net
251blackholes.uceb.org (result 127.0.0.6 = spam haven)
227dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
225dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
178accredit.habeas.com (not a blacklist!)
154iadb2.isipp.com (not a blacklist!)
154iadb.isipp.com (not a blacklist!)
147query.bondedsender.org (not a blacklist!)
137bl.deadbeef.com
134dnsbl.njabl.org (result 127.0.0.4 = spam source)
132blackholes.uceb.org (result 127.0.0.3 = spam source)
130multi.surbl.org
124multi.uribl.com (union of all results)
122multi.uribl.com (result 127.0.0.2 = spam resource)
113dnsbl.njabl.org (result 127.0.0.2 = open relay)
112multihop.dsbl.org
111dnsbl.ahbl.org (result 127.0.0.4 = spam source)
49hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
45relays.nether.net
42spam.wytnij.to
42dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
39blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
31countries.blackholes.us (result 127.5.6.6 = Nigeria)
27blackholes.uceb.org (result 127.0.0.5 = dialup)
27dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
26rdts.dnsbl.net.au
25spamguard.leadmon.net (union of all results)
23blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
20dnsbl.sorbs.net (result 127.0.0.6 = spam source)
18dnsbl.ahbl.org (result 127.0.0.15 = open relay)
18exemptions.ahbl.org (not a blacklist!)
17blackholes.uceb.org (result 127.0.0.2 = open relay)
13spamguard.leadmon.net (result 127.0.0.8 = open proxy)
10spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
10blackholes.brainerd.net
10dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
8ohps.dnsbl.net.au
5dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
3no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
3blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
2owps.dnsbl.net.au
2osrs.dnsbl.net.au
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
1spamsites.dnsbl.net.au
1osps.dnsbl.net.au
1omrs.dnsbl.net.au
1blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
1dob.sibl.support-intelligence.net
1dnsbl.ahbl.org (result 127.0.0.18 = virus source)
1dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)


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

HitsDNS Zone
229552(total number of IP addresses whose names were tested, including 495 at SDSC)
159364(union of all domain zones)
142531l1.apews.org
107747rddn.dnsbl.net.au
103586abuse.rfc-ignorant.org
66167dynamic.rhs.mailpolice.com
59415whois.rfc-ignorant.org (union of all results)
41772whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
17644whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
11198webmail.rhs.mailpolice.com
838dob.sibl.support-intelligence.net
729multi.surbl.org
728multi.uribl.com (union of all results)
726multi.uribl.com (result 127.0.0.2 = spam resource)
517adv.rhs.mailpolice.com
168bl.deadbeef.com
119postmaster.rfc-ignorant.org
107bulk.rhs.mailpolice.com
103rhsbl.ahbl.org
93bogusmx.rfc-ignorant.org
89dsn.rfc-ignorant.org (zone not intended for this use)
28rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
28rhsbl.sorbs.net (union of all results)
14porn.rhs.mailpolice.com
2multi.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
198294(total number of domains tested, including 436 at SDSC)
49385(union of all domain zones)
31110whois.rfc-ignorant.org (union of all results)
30416whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
7308bogusmx.rfc-ignorant.org
5133abuse.rfc-ignorant.org
2981multi.surbl.org
2573multi.uribl.com (union of all results)
2517multi.uribl.com (result 127.0.0.2 = spam resource)
2155l1.apews.org
1757webmail.rhs.mailpolice.com
1696postmaster.rfc-ignorant.org
927dsn.rfc-ignorant.org
856porn.rhs.mailpolice.com
694whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
458bulk.rhs.mailpolice.com
453rhsbl.ahbl.org
246dob.sibl.support-intelligence.net
197adv.rhs.mailpolice.com
189rddn.dnsbl.net.au (zone not intended for this use)
156dynamic.rhs.mailpolice.com
79rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
79rhsbl.sorbs.net (union of all results)
51multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
12ex.dnsbl.org
5multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
5fraud.rhs.mailpolice.com
4bl.deadbeef.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 9 November 2007.