Blacklists Compared

13 November 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
129644(total number of IP addresses tested, including 213 at SDSC)
124742(union of most IP zones)
117727b.barracudacentral.org
115963zen.spamhaus.org (union of all results)
111115l2.apews.org
107345zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
107333cbl.abuseat.org
86595hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
81646dnsbl-1.uceprotect.net
77257dnsbl-2.uceprotect.net
76949dnsbl-3.uceprotect.net
74251bl.mailspike.net (union of all results)
74221zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
72721psbl.surriel.com
66381bl.spameatingmonkey.net
60083bl.tiopan.com
49875spam.dnsbl.sorbs.net
46850hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
41090ubl.unsubscore.com
36851bl.mailspike.net (result 127.0.0.10 = worst possible reputation)
33765bl.mailspike.net (result 127.0.0.2 = distributed spam wave participant)
33152dnsbl.sorbs.net (union of all results)
31686bl.score.senderscore.com
27404db.wpbl.info
26089bl.spamcop.net
21979dnsbl.sorbs.net (result 127.0.0.10 = dialup)
17247zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
16959bl.mailspike.net (result 127.0.0.11 = very bad reputation)
16818ix.dnsbl.manitu.net
15617dnsbl.inps.de
13939no-more-funn.moensted.dk (union of all results)
12760mail-abuse.blacklist.jippg.org
10064hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
9567bl.mailspike.net (result 127.0.0.12 = bad reputation)
9541no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
8794dnsbl.sorbs.net (result 127.0.0.6 = spam source)
4944list.dnswl.org (not a blacklist!)
4913dnsbl.ahbl.org (union of all results)
4486wl.mailspike.net (union of all results) (not a blacklist!)
4434dnsbl.ahbl.org (result 127.0.0.4 = spam source)
3810no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
3565ips.backscatterer.org
3284hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
3147dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
3109bl.spamcannibal.org
2828korea.services.net
2810wl.mailspike.net (result 127.0.0.18 = good reputation) (not a blacklist!)
2642spamsources.fabel.dk
2226hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1619wl.mailspike.net (result 127.0.0.17 = possible legitimate sender) (not a blacklist!)
1129dnsbl.njabl.org (union of all results)
996hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
923dnsbl.njabl.org (result 127.0.0.9 = open proxy)
918tr.countries.nerd.dk
704l2.bbfh.ext.sorbs.net
619accredit.habeas.com (not a blacklist!)
546query.bondedsender.org (not a blacklist!)
451aspews.ext.sorbs.net
410no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
397dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
357zen.spamhaus.org (union of SBL and SBLCSS results)
351zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
290l1.bbfh.ext.sorbs.net
181dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
181dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
181dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
174no-more-funn.moensted.dk (result 127.0.0.9 = misc)
153dnsbl.njabl.org (result 127.0.0.2 = open relay)
152tor.dnsbl.sectoor.de (union of all results)
151tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
116iadb2.isipp.com (not a blacklist!)
89iadb.isipp.com (not a blacklist!)
84hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
82dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
67no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
57wl.mailspike.net (result 127.0.0.19 = very good reputation) (not a blacklist!)
53dnsbl.njabl.org (result 127.0.0.4 = spam source)
31bl.deadbeef.com
18swl.spamhaus.org (union of all results) (not a blacklist!)
12multi.surbl.org
11zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
10swl.spamhaus.org (result 127.0.2.103 = sends transactions - temporary listing) (not a blacklist!)
8swl.spamhaus.org (result 127.0.2.2 = sends individual mail) (not a blacklist!)
6zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
3hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
2dnsbl-0.uceprotect.net
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2dnsbl.sorbs.net (result 127.0.0.5 = open relay)
2spamguard.leadmon.net (union of all results)
1multi.uribl.com (result 127.0.0.2 = spam resource)
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
1spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
1multi.uribl.com (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
129644(total number of IP addresses whose names were tested, including 213 at SDSC)
74895hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
63667hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
56460(union of most domain zones)
49691abuse.rfc-ignorant.org
48677l1.apews.org
19699whois.rfc-ignorant.org (union of all results)
14629whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
7007hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
5070whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
4295hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1978hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
874hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
332hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
311dbl.spamhaus.org
299urired.spameatingmonkey.net
167hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
92hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
66rhsbl.ahbl.org
65postmaster.rfc-ignorant.org
37dsn.rfc-ignorant.org (zone not intended for this use)
32bogusmx.rfc-ignorant.org
27multi.surbl.org
19fresh.spameatingmonkey.net
15multi.uribl.com (union of all results)
14multi.uribl.com (result 127.0.0.2 = spam resource)
9hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
3hostkarma.junkemailfilter.com (result 127.0.1.3 = MTA somtimes sends QUIT)
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
59203(total number of domains tested, including 169 at SDSC)
55641hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
11472(union of most domain zones)
6132hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
3817whois.rfc-ignorant.org (union of all results)
3569whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3292urired.spameatingmonkey.net
3158hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
3023hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
2949abuse.rfc-ignorant.org
1544postmaster.rfc-ignorant.org
1326hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1260dbl.spamhaus.org
1160l1.apews.org
968multi.surbl.org
822hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
555multi.uribl.com (union of all results)
544multi.uribl.com (result 127.0.0.2 = spam resource)
530bogusmx.rfc-ignorant.org
466hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
303dsn.rfc-ignorant.org
248whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
70fresh.spameatingmonkey.net
41hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
20hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
17rhsbl.ahbl.org
13ex.dnsbl.org
10hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
7multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
4multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
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 18 November 2010.