Blacklists Compared

17 August 2013

[ 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, swl.spamhaus.org, and wl.mailspike.net zones because they are not blacklists. Because they are too aggressive to be widely useful the spam.dnsbl.sorbs.net and l2.apews.org zones are also excluded from the union.

HitsDNS Zone
71238(total number of IP addresses tested, including 153 at SDSC)
66318(union of most IP zones)
57439zen.spamhaus.org (union of all results)
57258b.barracudacentral.org
54971l2.apews.org
51535cbl.abuseat.org
51524zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
49939bl.tiopan.com
45612spam.dnsbl.sorbs.net
45536hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
41256bl.mailspike.net (union of all results)
38827zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
38106dnsbl-1.uceprotect.net
32928psbl.surriel.com
32629hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
32371db.wpbl.info
31198dnsbl.sorbs.net (union of all results)
27731bl.mailspike.net (result 127.0.0.12 = bad reputation)
26278bl.spameatingmonkey.net
23999dnsbl.inps.de
23168all.spamrats.com (union of all results)
23128dnsbl-2.uceprotect.net
22968dnsbl-3.uceprotect.net
21842truncate.gbudb.net
17106dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
15955ips.backscatterer.org
15500ubl.unsubscore.com
15219all.spamrats.com (result 127.0.0.36 = dialup)
15001dnsbl.sorbs.net (result 127.0.0.6 = spam source)
13934bl.score.senderscore.com
12427bl.spamcop.net
12062dnsbl.sorbs.net (result 127.0.0.10 = dialup)
10583bl.mailspike.net (result 127.0.0.10 = worst possible reputation)
7708all.spamrats.com (result 127.0.0.37 = no reverse DNS entry)
7177ix.dnsbl.manitu.net
6138list.dnswl.org (not a blacklist!)
5968zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
5735hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
5472wl.mailspike.net (union of all results) (not a blacklist!)
4179bl.mailspike.net (result 127.0.0.2 = distributed spam wave participant)
3578all.s5h.net
3351wl.mailspike.net (result 127.0.0.18 = good reputation) (not a blacklist!)
3279hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2649hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
2120hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1781bl.mailspike.net (result 127.0.0.11 = very bad reputation)
1605bl.spamcannibal.org
1410wl.mailspike.net (result 127.0.0.17 = possible legitimate sender) (not a blacklist!)
1409free.v4bl.org
1287spamsources.fabel.dk
1166zen.spamhaus.org (union of SBL and SBLCSS results)
1096tr.countries.nerd.dk
818mail-abuse.blacklist.jippg.org
789zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
738accredit.habeas.com (not a blacklist!)
616wl.mailspike.net (result 127.0.0.19 = very good reputation) (not a blacklist!)
612query.bondedsender.org (not a blacklist!)
387korea.services.net
377zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
312all.spamrats.com (result 127.0.0.38 = spam source)
244hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
208iadb.isipp.com (not a blacklist!)
160bl.mav.com.br
139iadb2.isipp.com (not a blacklist!)
116dnsbl.ahbl.org (union of all results)
101dnsbl.ahbl.org (result 127.0.0.4 = spam source)
95wl.mailspike.net (result 127.0.0.20 = excellent reputation) (not a blacklist!)
56tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
56tor.dnsbl.sectoor.de (union of all results)
35dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
35dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
35dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
15dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
14dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
10dnsbl-0.uceprotect.net
4wadb.isipp.com
4multi.surbl.org
2hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
1spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
1spamguard.leadmon.net (union of all results)
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
71238(total number of IP addresses whose names were tested, including 153 at SDSC)
40663hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
31614hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
19740l1.apews.org
5741hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
2453hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2010(union of most domain zones)
854hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
847dbl.spamhaus.org (result 127.0.1.2 = spam source)
847dbl.spamhaus.org (union of all results)
365hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
296hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
282hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
139hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
92multi.surbl.org
91fresh.spameatingmonkey.net
86rhsbl.ahbl.org
41dob.sibl.support-intelligence.net
20urired.spameatingmonkey.net
12hostkarma.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
61327(total number of domains tested, including 110 at SDSC)
53357hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
3374(union of most domain zones)
3138hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
2321hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
2201dbl.spamhaus.org (union of all results)
2197dbl.spamhaus.org (result 127.0.1.2 = spam source)
1699hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
1394multi.surbl.org
1381hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1284hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
596dob.sibl.support-intelligence.net
556fresh.spameatingmonkey.net
203hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
60hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
54urired.spameatingmonkey.net
45rhsbl.ahbl.org
24hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
15hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
5ex.dnsbl.org
4dbl.spamhaus.org (result 127.0.1.3 = domain redirects to spammer)
3hostkarma.junkemailfilter.com (result 127.0.1.3 = MTA somtimes sends QUIT)
This document was last updated by Jeff Makey <jeff@sdsc.edu> on 20 August 2013.