Blacklists Compared

9 October 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, 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
136371(total number of IP addresses tested, including 164 at SDSC)
132705(union of most IP zones)
123730b.barracudacentral.org
122051zen.spamhaus.org (union of all results)
113227zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
113206cbl.abuseat.org
99882hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
94566dnsbl-1.uceprotect.net
82874dnsbl-2.uceprotect.net
82114dnsbl-3.uceprotect.net
80939bl.tiopan.com
80684psbl.surriel.com
77514zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
76253bl.mailspike.net (union of all results)
73492bl.spameatingmonkey.net
58182hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
42066blackholes.five-ten-sg.com (union of all results)
38199bl.mailspike.net (result 127.0.0.2 = distributed spam wave participant)
37531spam.dnsbl.sorbs.net
34215bl.mailspike.net (result 127.0.0.10 = worst possible reputation)
30872bl.score.senderscore.com
28962blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
28542db.wpbl.info
28352dnsbl.sorbs.net (union of all results)
25556dnsbl.sorbs.net (result 127.0.0.10 = dialup)
25108bl.spamcop.net
24554ubl.unsubscore.com
20070zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
17960bl.mailspike.net (result 127.0.0.11 = very bad reputation)
14949dnsbl.inps.de
14708no-more-funn.moensted.dk (union of all results)
14579ix.dnsbl.manitu.net
13230mail-abuse.blacklist.jippg.org
12128bl.mailspike.net (result 127.0.0.12 = bad reputation)
11805blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
10558no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
8846hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
5110ips.backscatterer.org
5033dnsbl.ahbl.org (union of all results)
4711wl.mailspike.net (union of all results) (not a blacklist!)
4498dnsbl.ahbl.org (result 127.0.0.4 = spam source)
4201list.dnswl.org (not a blacklist!)
3475no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
3358bl.spamcannibal.org
3347hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
3209wl.mailspike.net (result 127.0.0.18 = good reputation) (not a blacklist!)
2759dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
2665korea.services.net
2658spamsources.fabel.dk
2352hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1382wl.mailspike.net (result 127.0.0.17 = possible legitimate sender) (not a blacklist!)
1277blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1177dnsbl.njabl.org (union of all results)
1116hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
966dnsbl.njabl.org (result 127.0.0.9 = open proxy)
930tr.countries.nerd.dk
822l2.bbfh.ext.sorbs.net
587aspews.ext.sorbs.net
573accredit.habeas.com (not a blacklist!)
483query.bondedsender.org (not a blacklist!)
447dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
445no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
422zen.spamhaus.org (union of SBL and SBLCSS results)
420zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
327l1.bbfh.ext.sorbs.net
194no-more-funn.moensted.dk (result 127.0.0.9 = misc)
192dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
192dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
192dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
145dnsbl.sorbs.net (result 127.0.0.6 = spam source)
133dnsbl.njabl.org (result 127.0.0.2 = open relay)
123iadb2.isipp.com (not a blacklist!)
121tor.dnsbl.sectoor.de (union of all results)
120wl.mailspike.net (result 127.0.0.19 = very good reputation) (not a blacklist!)
117tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
105no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
100iadb.isipp.com (not a blacklist!)
88dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
78dnsbl.njabl.org (result 127.0.0.4 = spam source)
70hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
36bl.deadbeef.com
22blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
17spamguard.leadmon.net (union of all results)
15swl.spamhaus.org (union of all results) (not a blacklist!)
13spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
11zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
11swl.spamhaus.org (result 127.0.2.103 = sends transactions - temporary listing) (not a blacklist!)
6dnsbl-0.uceprotect.net
5multi.surbl.org
5dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
4multi.uribl.com (result 127.0.0.2 = spam resource)
4tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
4swl.spamhaus.org (result 127.0.2.2 = sends individual mail) (not a blacklist!)
4multi.uribl.com (union of all results)
3hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
2zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
2spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
2spamguard.leadmon.net (result 127.0.0.8 = open proxy)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
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
136371(total number of IP addresses whose names were tested, including 164 at SDSC)
81221hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
70088hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
60562(union of most domain zones)
53147abuse.rfc-ignorant.org
21053whois.rfc-ignorant.org (union of all results)
15820whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
8085hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
5235whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
3958hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2229hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
518hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
474urired.spameatingmonkey.net
390dbl.spamhaus.org
295hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
232hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
62hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
60postmaster.rfc-ignorant.org
40rhsbl.ahbl.org
32bogusmx.rfc-ignorant.org
31fresh.spameatingmonkey.net
30dsn.rfc-ignorant.org (zone not intended for this use)
26dob.sibl.support-intelligence.net
25multi.uribl.com (union of all results)
24multi.uribl.com (result 127.0.0.2 = spam resource)
13hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
12multi.surbl.org
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
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
62565(total number of domains tested, including 145 at SDSC)
53564hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
11955(union of most domain zones)
7497hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
4874hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
4605abuse.rfc-ignorant.org
3336urired.spameatingmonkey.net
2972whois.rfc-ignorant.org (union of all results)
2684whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2636hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2593hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1650dbl.spamhaus.org
1609hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1415postmaster.rfc-ignorant.org
1029multi.surbl.org
657multi.uribl.com (union of all results)
648multi.uribl.com (result 127.0.0.2 = spam resource)
560bogusmx.rfc-ignorant.org
378hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
288whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
250dsn.rfc-ignorant.org
61fresh.spameatingmonkey.net
52dob.sibl.support-intelligence.net
41hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
21hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
17rhsbl.ahbl.org
12hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
9ex.dnsbl.org
8multi.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 13 October 2010.