Blacklists Compared

19 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
138219(total number of IP addresses tested, including 217 at SDSC)
134369(union of most IP zones)
124730b.barracudacentral.org
121508zen.spamhaus.org (union of all results)
116718l2.apews.org
96180cbl.abuseat.org
96094zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
92086bl.spameatingmonkey.net
91806hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
83895dnsbl-1.uceprotect.net
82028dnsbl.sorbs.net (union of all results)
82017dnsbl-2.uceprotect.net
79370dnsbl-3.uceprotect.net
77596zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
72617psbl.surriel.com
62186dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
42859ubl.unsubscore.com
39379hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
32817blackholes.five-ten-sg.com (union of all results)
32804no-more-funn.moensted.dk (union of all results)
30338dnsbl.sorbs.net (result 127.0.0.10 = dialup)
29525bl.spamcop.net
29403blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
23993db.wpbl.info
21589no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
21198zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
15002spam.dnsbl.sorbs.net
14766ix.dnsbl.manitu.net
11056mail-abuse.blacklist.jippg.org
8941no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
8381hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
8120dnsbl.inps.de
6927korea.services.net
6570bl.spamcannibal.org
4014spamsources.fabel.dk
3813list.dnswl.org (not a blacklist!)
3486tr.countries.nerd.dk
3237ips.backscatterer.org
2997hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2553blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2251hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
2236dnsbl.njabl.org (union of all results)
1540dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1334hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1314no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
947aspews.ext.sorbs.net
938no-more-funn.moensted.dk (result 127.0.0.9 = misc)
842blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
555dnsbl.njabl.org (result 127.0.0.4 = spam source)
513accredit.habeas.com (not a blacklist!)
394query.bondedsender.org (not a blacklist!)
379zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
360dnsbl.sorbs.net (result 127.0.0.6 = spam source)
274l2.bbfh.ext.sorbs.net
188dnsbl.ahbl.org (union of all results)
162iadb2.isipp.com (not a blacklist!)
141dnsbl.njabl.org (result 127.0.0.2 = open relay)
136l1.bbfh.ext.sorbs.net
131dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
122iadb.isipp.com (not a blacklist!)
97tor.dnsbl.sectoor.de (union of all results)
96tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
82no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
66hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
57dnsbl.ahbl.org (result 127.0.0.4 = spam source)
51bl.deadbeef.com
33dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
29dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
19blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
12zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
10multi.uribl.com (union of all results)
7multi.uribl.com (result 127.0.0.2 = spam resource)
7dnsbl-0.uceprotect.net
7spamguard.leadmon.net (union of all results)
6spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
6hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
4multi.surbl.org
4dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
4blackholes.brainerd.net
3multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
2dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1spamguard.leadmon.net (result 127.0.0.8 = 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
138219(total number of IP addresses whose names were tested, including 217 at SDSC)
80007hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
69375hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
64882(union of most domain zones)
56219l1.apews.org
51926abuse.rfc-ignorant.org
24950dynamic.rhs.mailpolice.com
22572whois.rfc-ignorant.org (union of all results)
15269whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
7813hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
7303whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
3323hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2863webmail.rhs.mailpolice.com
1401urired.spameatingmonkey.net
775hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
752adv.rhs.mailpolice.com
544hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
259hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
213hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
123rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
123rhsbl.sorbs.net (union of all results)
86hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
64multi.uribl.com (result 127.0.0.2 = spam resource)
64multi.uribl.com (union of all results)
59postmaster.rfc-ignorant.org
43multi.surbl.org
43bogusmx.rfc-ignorant.org
36dsn.rfc-ignorant.org (zone not intended for this use)
31bulk.rhs.mailpolice.com
29rhsbl.ahbl.org
24fresh.spameatingmonkey.net
24dob.sibl.support-intelligence.net
22hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
4porn.rhs.mailpolice.com
1fraud.rhs.mailpolice.com


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
72065(total number of domains tested, including 208 at SDSC)
66524hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
17130(union of most domain zones)
7621hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
5902urired.spameatingmonkey.net
4819hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
4639whois.rfc-ignorant.org (union of all results)
4201abuse.rfc-ignorant.org
3947whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2675l1.apews.org
2642hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1816hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1389bogusmx.rfc-ignorant.org
1291multi.surbl.org
1281postmaster.rfc-ignorant.org
1194multi.uribl.com (union of all results)
1180multi.uribl.com (result 127.0.0.2 = spam resource)
843webmail.rhs.mailpolice.com
692whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
628hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
493hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
411dsn.rfc-ignorant.org
355dynamic.rhs.mailpolice.com
321adv.rhs.mailpolice.com
269porn.rhs.mailpolice.com
87bulk.rhs.mailpolice.com
49hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
37hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
28rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
28rhsbl.sorbs.net (union of all results)
27hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
16rhsbl.ahbl.org
13ex.dnsbl.org
11multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
5dob.sibl.support-intelligence.net
3multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
3fresh.spameatingmonkey.net
2hostkarma.junkemailfilter.com (result 127.0.1.3 = MTA somtimes sends QUIT)
1fraud.rhs.mailpolice.com
1bl.deadbeef.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 24 September 2009.