Blacklists Compared

28 August 2010

[ 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, iadb2.isipp.com, and wl.mailspike.net 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
173639(total number of IP addresses tested, including 163 at SDSC)
170715(union of most IP zones)
159490zen.spamhaus.org (union of all results)
153074b.barracudacentral.org
146298cbl.abuseat.org
146291zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
143183l2.apews.org
126059hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
122985dnsbl-1.uceprotect.net
114144psbl.surriel.com
111060dnsbl-2.uceprotect.net
109989dnsbl-3.uceprotect.net
103209ubl.unsubscore.com
99810bl.mailspike.net (union of all results)
96884dnsbl.sorbs.net (union of all results)
95891bl.spameatingmonkey.net
94235zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
83479bl.tiopan.com
77156hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
70846dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
68945spam.dnsbl.sorbs.net
52397bl.score.senderscore.com
50621bl.mailspike.net (result 127.0.0.2 = distributed spam wave participant)
50465blackholes.five-ten-sg.com (union of all results)
42932bl.mailspike.net (result 127.0.0.10 = worst possible reputation)
41347blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
40175dnsbl.sorbs.net (result 127.0.0.10 = dialup)
38901db.wpbl.info
37892bl.spamcop.net
30815zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
23526ix.dnsbl.manitu.net
21391no-more-funn.moensted.dk (union of all results)
21364bl.mailspike.net (result 127.0.0.11 = very bad reputation)
19166dnsbl.inps.de
17535mail-abuse.blacklist.jippg.org
16353no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
15046bl.mailspike.net (result 127.0.0.12 = bad reputation)
10445hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
7775blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
6277dnsbl.sorbs.net (result 127.0.0.6 = spam source)
6013dnsbl.ahbl.org (union of all results)
5343ips.backscatterer.org
5066dnsbl.ahbl.org (result 127.0.0.4 = spam source)
4709no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
4674korea.services.net
4389bl.spamcannibal.org
4216wl.mailspike.net (union of all results) (not a blacklist!)
4176list.dnswl.org (not a blacklist!)
3526hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
3395spamsources.fabel.dk
2050tr.countries.nerd.dk
1951hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1673wl.mailspike.net (result 127.0.0.19 = very good reputation) (not a blacklist!)
1568dnsbl.njabl.org (union of all results)
1567wl.mailspike.net (result 127.0.0.18 = good reputation) (not a blacklist!)
1384dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1324blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
943wl.mailspike.net (result 127.0.0.17 = possible legitimate sender) (not a blacklist!)
940l2.bbfh.ext.sorbs.net
890hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
888dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
555accredit.habeas.com (not a blacklist!)
484l1.bbfh.ext.sorbs.net
458aspews.ext.sorbs.net
441query.bondedsender.org (not a blacklist!)
265zen.spamhaus.org (union of SBL and SBLCSS results)
254zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
217no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
152iadb2.isipp.com (not a blacklist!)
136tor.dnsbl.sectoor.de (union of all results)
135tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
119no-more-funn.moensted.dk (result 127.0.0.9 = misc)
118iadb.isipp.com (not a blacklist!)
117dnsbl.njabl.org (result 127.0.0.2 = open relay)
108no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
105hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
67dnsbl.njabl.org (result 127.0.0.4 = spam source)
59dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
49bl.deadbeef.com
33wl.mailspike.net (result 127.0.0.20 = excellent reputation) (not a blacklist!)
19blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
16spamguard.leadmon.net (union of all results)
13spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
12zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
12dnsbl-0.uceprotect.net
11zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
7multi.surbl.org
4hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
3multi.uribl.com (result 127.0.0.2 = spam resource)
3dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
3multi.uribl.com (union of all results)
2spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1spamguard.leadmon.net (result 127.0.0.8 = open proxy)
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
173639(total number of IP addresses whose names were tested, including 163 at SDSC)
108045hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
97710hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
84008(union of most domain zones)
73123l1.apews.org
68857abuse.rfc-ignorant.org
30059whois.rfc-ignorant.org (union of all results)
21600whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
10940hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
8459whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
3856hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
3149hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
559hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
422dbl.spamhaus.org
357urired.spameatingmonkey.net
307hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
257hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
102hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
75rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
75rhsbl.sorbs.net (union of all results)
68rhsbl.ahbl.org
61postmaster.rfc-ignorant.org
53fresh.spameatingmonkey.net
50dob.sibl.support-intelligence.net
39dsn.rfc-ignorant.org (zone not intended for this use)
32bogusmx.rfc-ignorant.org
25multi.surbl.org
20hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
17multi.uribl.com (result 127.0.0.2 = spam resource)
17multi.uribl.com (union of all results)
2bl.deadbeef.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
39328(total number of domains tested, including 138 at SDSC)
35769hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
9298(union of most domain zones)
5584hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
3380whois.rfc-ignorant.org (union of all results)
3172whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2619hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2609abuse.rfc-ignorant.org
2387hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1771urired.spameatingmonkey.net
1607postmaster.rfc-ignorant.org
1446dbl.spamhaus.org
1303hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1157hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
1086multi.surbl.org
980l1.apews.org
737multi.uribl.com (union of all results)
727multi.uribl.com (result 127.0.0.2 = spam resource)
510hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
501bogusmx.rfc-ignorant.org
328dsn.rfc-ignorant.org
208whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
57fresh.spameatingmonkey.net
41rhsbl.ahbl.org
24dob.sibl.support-intelligence.net
20hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
19hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
17rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
17hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
17rhsbl.sorbs.net (union of all results)
12ex.dnsbl.org
10multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
1hostkarma.junkemailfilter.com (result 127.0.1.3 = MTA somtimes sends QUIT)
1bl.deadbeef.com
This document was last updated by Jeff Makey <jeff@sdsc.edu> on 2 September 2010.