Blacklists Compared

13 April 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, l2.apews.org, and ip.v4bl.org zones are also excluded from the union.

HitsDNS Zone
103959(total number of IP addresses tested, including 163 at SDSC)
98896(union of most IP zones)
85098zen.spamhaus.org (union of all results)
84728b.barracudacentral.org
83945ip.v4bl.org
83489cbl.abuseat.org
83466zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
81296bl.mailspike.net (union of all results)
75045bl.tiopan.com
64220bl.mailspike.net (result 127.0.0.12 = bad reputation)
62682zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
59875dnsbl-1.uceprotect.net
58965spam.dnsbl.sorbs.net
58872hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
54817dnsbl.inps.de
52024psbl.surriel.com
48286dnsbl.sorbs.net (union of all results)
47426dnsbl-2.uceprotect.net
46730dnsbl-3.uceprotect.net
44470db.wpbl.info
36846bl.spameatingmonkey.net
34003all.spamrats.com (union of all results)
30736hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
29995ubl.unsubscore.com
29757dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
19806all.spamrats.com (result 127.0.0.36 = dialup)
19097dnsbl.sorbs.net (result 127.0.0.10 = dialup)
17033truncate.gbudb.net
15087dnsbl.sorbs.net (result 127.0.0.6 = spam source)
13758all.spamrats.com (result 127.0.0.37 = no reverse DNS entry)
13715bl.spamcop.net
13458bl.mailspike.net (result 127.0.0.11 = very bad reputation)
10206free.v4bl.org
9908bl.score.senderscore.com
8952hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
8314bl.mailspike.net (result 127.0.0.2 = distributed spam wave participant)
8296ips.backscatterer.org
7950wl.mailspike.net (union of all results) (not a blacklist!)
7579ix.dnsbl.manitu.net
7272zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
7076list.dnswl.org (not a blacklist!)
5150wl.mailspike.net (result 127.0.0.18 = good reputation) (not a blacklist!)
4628bl.mav.com.br
3575hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
3213hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
2918bl.mailspike.net (result 127.0.0.10 = worst possible reputation)
2564bl.spamcannibal.org
2224wl.mailspike.net (result 127.0.0.17 = possible legitimate sender) (not a blacklist!)
2152mail-abuse.blacklist.jippg.org
1699hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1344spamsources.fabel.dk
1169all.s5h.net
1027tr.countries.nerd.dk
760accredit.habeas.com (not a blacklist!)
663zen.spamhaus.org (union of SBL and SBLCSS results)
622query.bondedsender.org (not a blacklist!)
611korea.services.net
571all.spamrats.com (result 127.0.0.38 = spam source)
545zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
471wl.mailspike.net (result 127.0.0.19 = very good reputation) (not a blacklist!)
412hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
265dnsbl.ahbl.org (union of all results)
244iadb.isipp.com (not a blacklist!)
240l2.bbfh.ext.sorbs.net
212dnsbl.ahbl.org (result 127.0.0.4 = spam source)
118zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
111iadb2.isipp.com (not a blacklist!)
106wl.mailspike.net (result 127.0.0.20 = excellent reputation) (not a blacklist!)
50tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
50tor.dnsbl.sectoor.de (union of all results)
47dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
47dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
47dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
33dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
20dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
19dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
6hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
5multi.surbl.org
2dnsbl-0.uceprotect.net
1multi.uribl.com (result 127.0.0.2 = spam resource)
1swl.spamhaus.org (result 127.0.2.2 = sends individual mail) (not a blacklist!)
1spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
1dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
1multi.uribl.com (union of all results)
1swl.spamhaus.org (union of all results) (not a blacklist!)
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
103959(total number of IP addresses whose names were tested, including 163 at SDSC)
56589hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
39606hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
6640hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
3194hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
3010(union of most domain zones)
1023hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
952hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
719dbl.spamhaus.org (union of all results)
717dbl.spamhaus.org (result 127.0.1.2 = spam source)
530hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
264hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
171urired.spameatingmonkey.net
148hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
105fresh.spameatingmonkey.net
97dob.sibl.support-intelligence.net
54multi.uribl.com (result 127.0.0.2 = spam resource)
54multi.uribl.com (union of all results)
48multi.surbl.org
42rhsbl.ahbl.org
9hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
2dbl.spamhaus.org (result 127.0.1.3 = domain redirects to spammer)
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
67345(total number of domains tested, including 119 at SDSC)
55882hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
20646(union of most domain zones)
19613hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
4748hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
2787hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
2384hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2052dbl.spamhaus.org (union of all results)
2049dbl.spamhaus.org (result 127.0.1.2 = spam source)
1497multi.surbl.org
1395hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
1261multi.uribl.com (union of all results)
1247multi.uribl.com (result 127.0.0.2 = spam resource)
438dob.sibl.support-intelligence.net
330hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
315fresh.spameatingmonkey.net
55urired.spameatingmonkey.net
32hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
22hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
16rhsbl.ahbl.org
12multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
7hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
7ex.dnsbl.org
3dbl.spamhaus.org (result 127.0.1.3 = domain redirects to spammer)
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1hostkarma.junkemailfilter.com (result 127.0.1.3 = MTA somtimes sends QUIT)
This document was last updated by Jeff Makey <jeff@sdsc.edu> on 16 April 2013.