Blacklists Compared

26 September 2009

[ 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, and iadb2.isipp.com 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
165264(total number of IP addresses tested, including 194 at SDSC)
161428(union of most IP zones)
148157zen.spamhaus.org (union of all results)
142647b.barracudacentral.org
140914l2.apews.org
120181bl.spameatingmonkey.net
111202cbl.abuseat.org
111157zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
105034dnsbl-3.uceprotect.net
104339hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
104048dnsbl-2.uceprotect.net
100324dnsbl.sorbs.net (union of all results)
96476psbl.surriel.com
96367dnsbl-1.uceprotect.net
95961zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
74040dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
50144hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
49099ubl.unsubscore.com
42812blackholes.five-ten-sg.com (union of all results)
40669no-more-funn.moensted.dk (union of all results)
39699blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
38985dnsbl.sorbs.net (result 127.0.0.10 = dialup)
35040bl.spamcop.net
29827db.wpbl.info
27414no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
26259zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
18395ix.dnsbl.manitu.net
16759spam.dnsbl.sorbs.net
13515mail-abuse.blacklist.jippg.org
10710no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
9494dnsbl.inps.de
8483korea.services.net
7947bl.spamcannibal.org
7123hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
4882spamsources.fabel.dk
3844list.dnswl.org (not a blacklist!)
3655tr.countries.nerd.dk
3320ips.backscatterer.org
2813hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2604dnsbl.njabl.org (union of all results)
2430hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
2284blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2023dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1505no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1282hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1059no-more-funn.moensted.dk (result 127.0.0.9 = misc)
810blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
760aspews.ext.sorbs.net
525accredit.habeas.com (not a blacklist!)
453dnsbl.njabl.org (result 127.0.0.4 = spam source)
434zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
423dnsbl.sorbs.net (result 127.0.0.6 = spam source)
417query.bondedsender.org (not a blacklist!)
269l2.bbfh.ext.sorbs.net
176dnsbl.ahbl.org (union of all results)
170iadb2.isipp.com (not a blacklist!)
131dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
129l1.bbfh.ext.sorbs.net
128dnsbl.njabl.org (result 127.0.0.2 = open relay)
122iadb.isipp.com (not a blacklist!)
106tor.dnsbl.sectoor.de (union of all results)
105tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
102no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
67hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
49bl.deadbeef.com
45dnsbl.ahbl.org (result 127.0.0.4 = spam source)
43dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
36dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
19blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
16dnsbl-0.uceprotect.net
8zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
6multi.uribl.com (union of all results)
5multi.uribl.com (result 127.0.0.2 = spam resource)
5hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
5blackholes.brainerd.net
4spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
4spamguard.leadmon.net (union of all results)
3dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
3dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1multi.surbl.org
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)


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
165264(total number of IP addresses whose names were tested, including 194 at SDSC)
96204hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
86489hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
80115(union of most domain zones)
70058l1.apews.org
63911abuse.rfc-ignorant.org
32847dynamic.rhs.mailpolice.com
27454whois.rfc-ignorant.org (union of all results)
18181whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
10187hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
9273whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
3945webmail.rhs.mailpolice.com
3113hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1413urired.spameatingmonkey.net
781adv.rhs.mailpolice.com
753hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
698hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
255hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
224hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
142rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
142rhsbl.sorbs.net (union of all results)
139hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
79postmaster.rfc-ignorant.org
67multi.uribl.com (union of all results)
66multi.uribl.com (result 127.0.0.2 = spam resource)
62dob.sibl.support-intelligence.net
54bogusmx.rfc-ignorant.org
52dsn.rfc-ignorant.org (zone not intended for this use)
39multi.surbl.org
39fresh.spameatingmonkey.net
36bulk.rhs.mailpolice.com
29rhsbl.ahbl.org
17hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
10porn.rhs.mailpolice.com
7bl.deadbeef.com
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
84895(total number of domains tested, including 174 at SDSC)
80359hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
18976(union of most domain zones)
9054hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
5718whois.rfc-ignorant.org (union of all results)
5350abuse.rfc-ignorant.org
5144hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
5015whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
5013urired.spameatingmonkey.net
3253l1.apews.org
2622hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2093hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1375bogusmx.rfc-ignorant.org
1277multi.surbl.org
1207postmaster.rfc-ignorant.org
1196multi.uribl.com (union of all results)
1179multi.uribl.com (result 127.0.0.2 = spam resource)
1009webmail.rhs.mailpolice.com
703whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
648hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
513hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
421dynamic.rhs.mailpolice.com
401dsn.rfc-ignorant.org
303adv.rhs.mailpolice.com
272porn.rhs.mailpolice.com
80bulk.rhs.mailpolice.com
62hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
34hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
29rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
29rhsbl.sorbs.net (union of all results)
19hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
17rhsbl.ahbl.org
15ex.dnsbl.org
12dob.sibl.support-intelligence.net
11multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
6multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
4fresh.spameatingmonkey.net
3fraud.rhs.mailpolice.com
2hostkarma.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 1 October 2009.