Blacklists Compared

27 February 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, and wl.mailspike.net 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
219139(total number of IP addresses tested, including 182 at SDSC)
215528(union of most IP zones)
206803b.barracudacentral.org
203490zen.spamhaus.org (union of all results)
183695l2.apews.org
176514zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
176382cbl.abuseat.org
173940hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
158645dnsbl-1.uceprotect.net
158408bl.mailspike.net (union of all results)
148690dnsbl-2.uceprotect.net
146166dnsbl-3.uceprotect.net
134724dnsbl.sorbs.net (union of all results)
121777psbl.surriel.com
119261zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
115223ubl.unsubscore.com
101171dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
96961hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
73020bl.mailspike.net (result 127.0.0.10 = worst possible reputation)
72997bl.spameatingmonkey.net
54408blackholes.five-ten-sg.com (union of all results)
52051dnsbl.sorbs.net (result 127.0.0.10 = dialup)
49987blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
47431bl.mailspike.net (result 127.0.0.12 = bad reputation)
47257bl.spamcop.net
44535db.wpbl.info
44079no-more-funn.moensted.dk (union of all results)
38690zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
38647bl.tiopan.com
37809bl.score.senderscore.com
36708bl.mailspike.net (result 127.0.0.2 = distributed spam wave participant)
36179bl.mailspike.net (result 127.0.0.11 = very bad reputation)
31552no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
28826ix.dnsbl.manitu.net
22985mail-abuse.blacklist.jippg.org
18327spam.dnsbl.sorbs.net
13866hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
12633dnsbl.inps.de
10239korea.services.net
9853no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
7188bl.spamcannibal.org
4811spamsources.fabel.dk
4561list.dnswl.org (not a blacklist!)
4231dnsbl.ahbl.org (union of all results)
4118dnsbl.ahbl.org (result 127.0.0.4 = spam source)
3282blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2962wl.mailspike.net (union of all results) (not a blacklist!)
2911hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2788ips.backscatterer.org
2339tr.countries.nerd.dk
2270wl.mailspike.net (result 127.0.0.17 = possible legitimate sender) (not a blacklist!)
2141dnsbl.njabl.org (union of all results)
1982no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1954hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1867dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1401hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1114blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
692wl.mailspike.net (result 127.0.0.18 = good reputation) (not a blacklist!)
661no-more-funn.moensted.dk (result 127.0.0.9 = misc)
583zen.spamhaus.org (union of SBL and SBLCSS results)
535zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
464accredit.habeas.com (not a blacklist!)
461aspews.ext.sorbs.net
389query.bondedsender.org (not a blacklist!)
176dnsbl.njabl.org (result 127.0.0.2 = open relay)
176l2.bbfh.ext.sorbs.net
158iadb2.isipp.com (not a blacklist!)
125no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
119iadb.isipp.com (not a blacklist!)
118dnsbl.sorbs.net (result 127.0.0.6 = spam source)
116tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
116tor.dnsbl.sectoor.de (union of all results)
112dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
98dnsbl.njabl.org (result 127.0.0.4 = spam source)
76l1.bbfh.ext.sorbs.net
75hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
48zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
39bl.deadbeef.com
35dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
33dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
25blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
14multi.uribl.com (union of all results)
12multi.uribl.com (result 127.0.0.2 = spam resource)
10zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
10dnsbl-0.uceprotect.net
7hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
7spamguard.leadmon.net (union of all results)
4blackholes.brainerd.net
3multi.surbl.org
3spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2dnsbl.sorbs.net (result 127.0.0.5 = open relay)
2spamguard.leadmon.net (result 127.0.0.8 = open proxy)
2spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
1dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
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
219139(total number of IP addresses whose names were tested, including 182 at SDSC)
134459hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
122258hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
112895(union of most domain zones)
97159l1.apews.org
89474abuse.rfc-ignorant.org
39172whois.rfc-ignorant.org (union of all results)
37545dynamic.rhs.mailpolice.com
30338whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
12656hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
8834whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
5031webmail.rhs.mailpolice.com
3155hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2420hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
913adv.rhs.mailpolice.com
462urired.spameatingmonkey.net
376hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
327hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
303dbl.spamhaus.org
120hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
95rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
95rhsbl.sorbs.net (union of all results)
76multi.uribl.com (result 127.0.0.2 = spam resource)
76multi.uribl.com (union of all results)
66postmaster.rfc-ignorant.org
62hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
44dsn.rfc-ignorant.org (zone not intended for this use)
43rhsbl.ahbl.org
41bulk.rhs.mailpolice.com
39bogusmx.rfc-ignorant.org
28multi.surbl.org
12fresh.spameatingmonkey.net
12dob.sibl.support-intelligence.net
4porn.rhs.mailpolice.com
3bl.deadbeef.com
1hostkarma.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
93309(total number of domains tested, including 170 at SDSC)
89926hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
17894(union of most domain zones)
8862hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
8174whois.rfc-ignorant.org (union of all results)
7810whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
5983hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
4118abuse.rfc-ignorant.org
3481urired.spameatingmonkey.net
2991hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2359postmaster.rfc-ignorant.org
1477l1.apews.org
1380bogusmx.rfc-ignorant.org
851webmail.rhs.mailpolice.com
815hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
622hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
611dbl.spamhaus.org
596multi.surbl.org
548multi.uribl.com (union of all results)
534multi.uribl.com (result 127.0.0.2 = spam resource)
531dsn.rfc-ignorant.org
364whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
313adv.rhs.mailpolice.com
209porn.rhs.mailpolice.com
73bulk.rhs.mailpolice.com
73hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
36fresh.spameatingmonkey.net
36dob.sibl.support-intelligence.net
35hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
31rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
31rhsbl.sorbs.net (union of all results)
28hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
21rhsbl.ahbl.org
19dynamic.rhs.mailpolice.com
13multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
13ex.dnsbl.org
5fraud.rhs.mailpolice.com
3hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
1multi.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 4 March 2010.