Blacklists Compared

21 November 2009

[ 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 (all results but 127.0.0.2, 127.0.0.3, and 127.0.0.4), 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
157274(total number of IP addresses tested, including 196 at SDSC)
153512(union of most IP zones)
143198b.barracudacentral.org
140520zen.spamhaus.org (union of all results)
133587l2.apews.org
108281cbl.abuseat.org
105489zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
100929dnsbl.sorbs.net (union of all results)
100856dnsbl-1.uceprotect.net
99714dnsbl-2.uceprotect.net
98974hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
98663dnsbl-3.uceprotect.net
92235zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
90938psbl.surriel.com
78690dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
73363ubl.unsubscore.com
61193bl.spameatingmonkey.net
42139blackholes.five-ten-sg.com (union of all results)
40749hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
40282no-more-funn.moensted.dk (union of all results)
38924blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
34610db.wpbl.info
33962dnsbl.sorbs.net (result 127.0.0.10 = dialup)
30461bl.spamcop.net
23197zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
22837no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
21059bl.score.senderscore.com
19326spam.dnsbl.sorbs.net
16628hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
16584ix.dnsbl.manitu.net
13096mail-abuse.blacklist.jippg.org
12013no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
11306korea.services.net
10503dnsbl.inps.de
9049bl.spamcannibal.org
5096ips.backscatterer.org
4942spamsources.fabel.dk
3782no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
3771list.dnswl.org (not a blacklist!)
2882hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2190blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2159dnsbl.njabl.org (union of all results)
2011hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1746dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1639hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1582no-more-funn.moensted.dk (result 127.0.0.9 = misc)
1148tr.countries.nerd.dk
1045zen.spamhaus.org (union of SBL and SBLCSS results)
1007blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
705zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
537l2.bbfh.ext.sorbs.net
520accredit.habeas.com (not a blacklist!)
498aspews.ext.sorbs.net
429dnsbl.sorbs.net (result 127.0.0.6 = spam source)
421query.bondedsender.org (not a blacklist!)
340zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
238l1.bbfh.ext.sorbs.net
208dnsbl.njabl.org (result 127.0.0.2 = open relay)
205dnsbl.njabl.org (result 127.0.0.4 = spam source)
162iadb2.isipp.com (not a blacklist!)
159no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
153dnsbl.ahbl.org (union of all results)
124iadb.isipp.com (not a blacklist!)
123dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
93hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
80tor.dnsbl.sectoor.de (union of all results)
79tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
34bl.deadbeef.com
33dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
33dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
30dnsbl.ahbl.org (result 127.0.0.4 = spam source)
18multi.uribl.com (union of all results)
17multi.uribl.com (result 127.0.0.2 = spam resource)
14blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
11dnsbl-0.uceprotect.net
10zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
10spamguard.leadmon.net (union of all results)
5dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
4multi.surbl.org
4spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
4spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
3hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
3blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1blackholes.brainerd.net

Survey results for all known public domain-name-based DNS blacklists. Lookups were done on the domain names of connecting IP addresses. The "union of most domain zones" line includes data from the hostkarma.junkemailfilter.com zone only when the results are 127.0.0.2, 127.0.0.3, or 127.0.0.4 because other results are not blacklists.

HitsDNS Zone
157274(total number of IP addresses whose names were tested, including 196 at SDSC)
86986hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
75943hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
72025(union of most domain zones)
62675l1.apews.org
57918abuse.rfc-ignorant.org
28047dynamic.rhs.mailpolice.com
25264whois.rfc-ignorant.org (union of all results)
19302whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
8708hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
5962whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
3386webmail.rhs.mailpolice.com
3067hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
841adv.rhs.mailpolice.com
684hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
593hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
559urired.spameatingmonkey.net
368hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
264bl.deadbeef.com
247hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
238hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
155rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
155rhsbl.sorbs.net (union of all results)
58postmaster.rfc-ignorant.org
41bulk.rhs.mailpolice.com
30dsn.rfc-ignorant.org (zone not intended for this use)
28bogusmx.rfc-ignorant.org
27rhsbl.ahbl.org
26multi.surbl.org
21multi.uribl.com (result 127.0.0.2 = spam resource)
21multi.uribl.com (union of all results)
19hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
11fresh.spameatingmonkey.net
10dob.sibl.support-intelligence.net
2porn.rhs.mailpolice.com

Survey results for all known public domain-name-based DNS blacklists. Lookups were done on SMTP sender domains. The "union of most domain zones" line includes data from the hostkarma.junkemailfilter.com zone only when the results are 127.0.0.2, 127.0.0.3, or 127.0.0.4 because other results are not blacklists.

HitsDNS Zone
75309(total number of domains tested, including 171 at SDSC)
71122hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
17884(union of most domain zones)
7631hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
6528whois.rfc-ignorant.org (union of all results)
6114whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
5927hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
4798urired.spameatingmonkey.net
3864abuse.rfc-ignorant.org
2897hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2162l1.apews.org
1593hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1583postmaster.rfc-ignorant.org
1208bogusmx.rfc-ignorant.org
1204multi.surbl.org
923webmail.rhs.mailpolice.com
911multi.uribl.com (union of all results)
893multi.uribl.com (result 127.0.0.2 = spam resource)
573hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
521dsn.rfc-ignorant.org
414whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
332adv.rhs.mailpolice.com
283dynamic.rhs.mailpolice.com
278porn.rhs.mailpolice.com
194hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
97hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
94bulk.rhs.mailpolice.com
39hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
38rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
38rhsbl.sorbs.net (union of all results)
26fresh.spameatingmonkey.net
24dob.sibl.support-intelligence.net
17hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
14rhsbl.ahbl.org
12multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
11ex.dnsbl.org
6multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
3bl.deadbeef.com
2hostkarma.junkemailfilter.com (result 127.0.1.3 = MTA somtimes sends QUIT)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 26 November 2009.