Blacklists Compared

11 September 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
149152(total number of IP addresses tested, including 169 at SDSC)
146105(union of most IP zones)
135349zen.spamhaus.org (union of all results)
126607b.barracudacentral.org
124929cbl.abuseat.org
124902zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
123113l2.apews.org
111518hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
109530dnsbl-1.uceprotect.net
96261psbl.surriel.com
94194dnsbl-2.uceprotect.net
92975dnsbl-3.uceprotect.net
89545bl.spameatingmonkey.net
82452zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
80417dnsbl.sorbs.net (union of all results)
74156bl.tiopan.com
73263hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
60911spam.dnsbl.sorbs.net
60514bl.mailspike.net (union of all results)
56657dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
45877bl.score.senderscore.com
42382blackholes.five-ten-sg.com (union of all results)
35334db.wpbl.info
34095dnsbl.sorbs.net (result 127.0.0.10 = dialup)
33716bl.spamcop.net
33708blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
26991ubl.unsubscore.com
25051zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
20227bl.mailspike.net (result 127.0.0.11 = very bad reputation)
20011ix.dnsbl.manitu.net
19656bl.mailspike.net (result 127.0.0.10 = worst possible reputation)
18441no-more-funn.moensted.dk (union of all results)
17434bl.mailspike.net (result 127.0.0.12 = bad reputation)
16898mail-abuse.blacklist.jippg.org
16633dnsbl.inps.de
13903no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
12750bl.mailspike.net (result 127.0.0.2 = distributed spam wave participant)
7426blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
7329hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
5507ips.backscatterer.org
4491wl.mailspike.net (union of all results) (not a blacklist!)
4346dnsbl.sorbs.net (result 127.0.0.6 = spam source)
4284dnsbl.ahbl.org (union of all results)
4178list.dnswl.org (not a blacklist!)
4055no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
3556bl.spamcannibal.org
3541dnsbl.ahbl.org (result 127.0.0.4 = spam source)
3324korea.services.net
3266hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2723spamsources.fabel.dk
2063hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1809wl.mailspike.net (result 127.0.0.18 = good reputation) (not a blacklist!)
1689wl.mailspike.net (result 127.0.0.17 = possible legitimate sender) (not a blacklist!)
1413dnsbl.njabl.org (union of all results)
1222blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1220dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1196tr.countries.nerd.dk
992wl.mailspike.net (result 127.0.0.19 = very good reputation) (not a blacklist!)
983hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
982l2.bbfh.ext.sorbs.net
676dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
505accredit.habeas.com (not a blacklist!)
463l1.bbfh.ext.sorbs.net
430aspews.ext.sorbs.net
424query.bondedsender.org (not a blacklist!)
280no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
253no-more-funn.moensted.dk (result 127.0.0.9 = misc)
247zen.spamhaus.org (union of SBL and SBLCSS results)
241zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
161iadb2.isipp.com (not a blacklist!)
134iadb.isipp.com (not a blacklist!)
126dnsbl.njabl.org (result 127.0.0.2 = open relay)
113tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
113tor.dnsbl.sectoor.de (union of all results)
99hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
78no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
67dnsbl.njabl.org (result 127.0.0.4 = spam source)
67dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
39bl.deadbeef.com
26blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
13zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
11spamguard.leadmon.net (union of all results)
9spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
8dnsbl-0.uceprotect.net
6zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
6multi.surbl.org
5hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
4multi.uribl.com (result 127.0.0.2 = spam resource)
4multi.uribl.com (union of all results)
1wl.mailspike.net (result 127.0.0.20 = excellent reputation) (not a blacklist!)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
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
149152(total number of IP addresses whose names were tested, including 169 at SDSC)
95339hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
85549hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
73964(union of most domain zones)
63197l1.apews.org
60464abuse.rfc-ignorant.org
26446whois.rfc-ignorant.org (union of all results)
19032whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
9040hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
7414whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
3680hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2380hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
677hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
540urired.spameatingmonkey.net
416dbl.spamhaus.org
299hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
281hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
64rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
64rhsbl.sorbs.net (union of all results)
61hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
60dob.sibl.support-intelligence.net
59rhsbl.ahbl.org
53fresh.spameatingmonkey.net
47postmaster.rfc-ignorant.org
33multi.uribl.com (result 127.0.0.2 = spam resource)
33multi.uribl.com (union of all results)
28dsn.rfc-ignorant.org (zone not intended for this use)
27bogusmx.rfc-ignorant.org
26multi.surbl.org
24hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
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
32363(total number of domains tested, including 144 at SDSC)
25948hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
9594(union of most domain zones)
6786hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
3675whois.rfc-ignorant.org (union of all results)
3373whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3337abuse.rfc-ignorant.org
2711hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
2702hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2098hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
1710l1.apews.org
1591postmaster.rfc-ignorant.org
1560urired.spameatingmonkey.net
1459dbl.spamhaus.org
1252hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
867multi.surbl.org
631dob.sibl.support-intelligence.net
610multi.uribl.com (union of all results)
600multi.uribl.com (result 127.0.0.2 = spam resource)
444bogusmx.rfc-ignorant.org
406hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
302whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
290dsn.rfc-ignorant.org
109fresh.spameatingmonkey.net
86hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
28rhsbl.ahbl.org
25hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
22rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
22rhsbl.sorbs.net (union of all results)
14hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
10ex.dnsbl.org
9multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1bl.deadbeef.com
This document was last updated by Jeff Makey <jeff@sdsc.edu> on 15 September 2010.