Blacklists Compared

2 February 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
268396(total number of IP addresses tested, including 471 at SDSC)
248044(union of most IP zones)
219630l2.apews.org
205225zen.spamhaus.org (union of all results)
189480t1.dnsbl.net.au
164950pbl.spamhaus.org (union of all results)
136414sbl-xbl.spamhaus.org (union of all results)
135927xbl.spamhaus.org (union of all results)
135715cbl.abuseat.org
135682zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
135651xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
135638sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
128455dnsbl-3.uceprotect.net
124701zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
124618pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
124573psbl.surriel.com
121789dnsbl-2.uceprotect.net
114346dnsbl-1.uceprotect.net
112865dnsbl.sorbs.net (union of all results)
100199ubl.unsubscore.com
98148no-more-funn.moensted.dk (union of all results)
96504dnsbl.sorbs.net (result 127.0.0.10 = dialup)
86456blackholes.five-ten-sg.com (union of all results)
83965no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
80181blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
71997hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
40746zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
40743pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
39870bl.spamcop.net
36049ix.dnsbl.manitu.net
29539db.wpbl.info
29159sbl.csma.biz
28596bl.csma.biz
16518dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
16323unconfirmed.dsbl.org
16125list.dsbl.org
16117dsbl.dnsbl.net.au
15804tr.countries.nerd.dk
15604bl.spamcannibal.org
14954ips.backscatterer.org
13348countries.blackholes.us (result 127.7.9.2 = Turkey)
12606no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
10127mail-abuse.blacklist.jippg.org
9567countries.blackholes.us (result 127.0.7.6 = Brazil)
8435korea.services.net
7731countries.blackholes.us (result 127.6.4.3 = Russia)
7661countries.blackholes.us (result 127.4.1.0 = Korea)
7375rmst.dnsbl.net.au
5753list.dnswl.org (not a blacklist!)
5573countries.blackholes.us (result 127.1.5.6 = China)
5116blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4991dnsbl.njabl.org (union of all results)
4726dnsbl.njabl.org (result 127.0.0.9 = open proxy)
4003countries.blackholes.us (result 127.0.3.2 = Argentina)
3707countries.blackholes.us (result 127.3.9.2 = Japan)
2976dnsbl.ahbl.org (union of all results)
2943countries.blackholes.us (result 127.4.8.4 = Mexico)
2743spamsources.fabel.dk
2739dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2622hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2193aspews.ext.sorbs.net
2102countries.blackholes.us (result 127.7.6.4 = Thailand)
1153zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1153xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1152sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1122countries.blackholes.us (result 127.4.5.8 = Malaysia)
1065blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
993hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
920countries.blackholes.us (result 127.1.5.8 = Taiwan)
918no-more-funn.moensted.dk (result 127.0.0.9 = misc)
871probes.dnsbl.net.au
665countries.blackholes.us (result 127.3.4.4 = Hong Kong)
628zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
628sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
628sbl.spamhaus.org
547no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
495countries.blackholes.us (result 127.7.0.2 = Singapore)
380bl.deadbeef.com
321dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
288dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
267work.drbl.croco.net
198multi.surbl.org
190no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
181accredit.habeas.com (not a blacklist!)
168query.bondedsender.org (not a blacklist!)
147multihop.dsbl.org
138dnsbl.njabl.org (result 127.0.0.2 = open relay)
138iadb2.isipp.com (not a blacklist!)
137hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
133dnsbl.ahbl.org (result 127.0.0.4 = spam source)
132iadb.isipp.com (not a blacklist!)
127dnsbl.njabl.org (result 127.0.0.4 = spam source)
113dnsbl.sorbs.net (result 127.0.0.6 = spam source)
105relays.nether.net
92multi.uribl.com (result 127.0.0.2 = spam resource)
92multi.uribl.com (union of all results)
87dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
81exemptions.ahbl.org (not a blacklist!)
57blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
45rdts.dnsbl.net.au
42dnsbl.ahbl.org (result 127.0.0.15 = open relay)
38countries.blackholes.us (result 127.5.6.6 = Nigeria)
31dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
26blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
26spamguard.leadmon.net (union of all results)
22spam.wytnij.to
20dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
16spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
16blackholes.brainerd.net
8ohps.dnsbl.net.au
7blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
5spamguard.leadmon.net (result 127.0.0.3 = spam source)
5spamguard.leadmon.net (result 127.0.0.8 = open proxy)
5no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
5dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
3blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
3dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
2owps.dnsbl.net.au
2spamsites.dnsbl.net.au
2osrs.dnsbl.net.au
2dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
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)


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

HitsDNS Zone
268396(total number of IP addresses whose names were tested, including 471 at SDSC)
167663(union of all domain zones)
140789l1.apews.org
103605rddn.dnsbl.net.au
103079abuse.rfc-ignorant.org
65995whois.rfc-ignorant.org (union of all results)
63011dynamic.rhs.mailpolice.com
44062whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
21934whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
11200webmail.rhs.mailpolice.com
878multi.surbl.org
791dob.sibl.support-intelligence.net
779multi.uribl.com (union of all results)
777multi.uribl.com (result 127.0.0.2 = spam resource)
646adv.rhs.mailpolice.com
144bl.deadbeef.com
139postmaster.rfc-ignorant.org
129rhsbl.ahbl.org
123bogusmx.rfc-ignorant.org
104dsn.rfc-ignorant.org (zone not intended for this use)
78bulk.rhs.mailpolice.com
35porn.rhs.mailpolice.com
30rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
30rhsbl.sorbs.net (union of all results)
2multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
2blackhole.securitysage.com
1ex.dnsbl.org


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

HitsDNS Zone
168849(total number of domains tested, including 411 at SDSC)
41215(union of all domain zones)
22708whois.rfc-ignorant.org (union of all results)
22013whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
8662bogusmx.rfc-ignorant.org
5035abuse.rfc-ignorant.org
2603multi.surbl.org
2269multi.uribl.com (union of all results)
2206multi.uribl.com (result 127.0.0.2 = spam resource)
1991postmaster.rfc-ignorant.org
1838l1.apews.org
1223webmail.rhs.mailpolice.com
1049dsn.rfc-ignorant.org
695whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
631porn.rhs.mailpolice.com
328rhsbl.ahbl.org
319bulk.rhs.mailpolice.com
259adv.rhs.mailpolice.com
179blackhole.securitysage.com
71rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
71rhsbl.sorbs.net (union of all results)
60rddn.dnsbl.net.au (zone not intended for this use)
56multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
42dynamic.rhs.mailpolice.com
39dob.sibl.support-intelligence.net
15ex.dnsbl.org
7multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
4bl.deadbeef.com
2fraud.rhs.mailpolice.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 9 February 2008.