Blacklists Compared

19 December 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
168765(total number of IP addresses tested, including 201 at SDSC)
164943(union of most IP zones)
155614b.barracudacentral.org
153750zen.spamhaus.org (union of all results)
141804l2.apews.org
139795cbl.abuseat.org
139737zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
105726dnsbl-2.uceprotect.net
104816dnsbl-1.uceprotect.net
104583hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
103933dnsbl-3.uceprotect.net
100533dnsbl.sorbs.net (union of all results)
97041zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
97025psbl.surriel.com
86146ubl.unsubscore.com
76425dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
58371hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
52017blackholes.five-ten-sg.com (union of all results)
47338blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
40627bl.spameatingmonkey.net
38517no-more-funn.moensted.dk (union of all results)
34816bl.score.senderscore.com
34463dnsbl.sorbs.net (result 127.0.0.10 = dialup)
30791bl.spamcop.net
30762db.wpbl.info
24592zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
22302no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
17423ix.dnsbl.manitu.net
15053spam.dnsbl.sorbs.net
13186mail-abuse.blacklist.jippg.org
11188hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
9898no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
9740dnsbl.inps.de
8636korea.services.net
7680bl.spamcannibal.org
4510spamsources.fabel.dk
4500list.dnswl.org (not a blacklist!)
3445no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
3318blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2994ips.backscatterer.org
2979hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2870no-more-funn.moensted.dk (result 127.0.0.9 = misc)
2582tr.countries.nerd.dk
2059dnsbl.njabl.org (union of all results)
1837hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1792dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1542hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1345blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
606l2.bbfh.ext.sorbs.net
519accredit.habeas.com (not a blacklist!)
515zen.spamhaus.org (union of SBL and SBLCSS results)
496aspews.ext.sorbs.net
423zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
410query.bondedsender.org (not a blacklist!)
295l1.bbfh.ext.sorbs.net
211dnsbl.sorbs.net (result 127.0.0.6 = spam source)
167iadb2.isipp.com (not a blacklist!)
147dnsbl.njabl.org (result 127.0.0.2 = open relay)
145dnsbl.ahbl.org (union of all results)
127iadb.isipp.com (not a blacklist!)
120dnsbl.njabl.org (result 127.0.0.4 = spam source)
119hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
112dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
110tor.dnsbl.sectoor.de (union of all results)
109tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
92zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
88no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
49bl.deadbeef.com
35dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
33dnsbl.ahbl.org (result 127.0.0.4 = spam source)
26dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
19zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
16blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
7hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
7multi.uribl.com (union of all results)
6multi.uribl.com (result 127.0.0.2 = spam resource)
6dnsbl-0.uceprotect.net
5dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
4multi.surbl.org
4dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
3spamguard.leadmon.net (union of all results)
2dnsbl.sorbs.net (result 127.0.0.5 = open relay)
2spamguard.leadmon.net (result 127.0.0.8 = open proxy)
2blackholes.brainerd.net
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)


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
168765(total number of IP addresses whose names were tested, including 201 at SDSC)
97939hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
86290hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
80579(union of most domain zones)
68897l1.apews.org
66284abuse.rfc-ignorant.org
29088whois.rfc-ignorant.org (union of all results)
26679dynamic.rhs.mailpolice.com
21860whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
10153hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
7228whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
3622webmail.rhs.mailpolice.com
3210hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1242hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
963adv.rhs.mailpolice.com
548hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
480urired.spameatingmonkey.net
278bl.deadbeef.com
262hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
151hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
122hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
107rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
107rhsbl.sorbs.net (union of all results)
48multi.uribl.com (result 127.0.0.2 = spam resource)
48multi.uribl.com (union of all results)
45multi.surbl.org
45postmaster.rfc-ignorant.org
41rhsbl.ahbl.org
39fresh.spameatingmonkey.net
36bulk.rhs.mailpolice.com
35dob.sibl.support-intelligence.net
29dsn.rfc-ignorant.org (zone not intended for this use)
25bogusmx.rfc-ignorant.org
3hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
1porn.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
58285(total number of domains tested, including 185 at SDSC)
55190hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
13343(union of most domain zones)
7105hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
4147hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
3699whois.rfc-ignorant.org (union of all results)
3621urired.spameatingmonkey.net
3371abuse.rfc-ignorant.org
3341whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2265hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2108l1.apews.org
1545postmaster.rfc-ignorant.org
1435hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1407bogusmx.rfc-ignorant.org
1141multi.surbl.org
858multi.uribl.com (union of all results)
843multi.uribl.com (result 127.0.0.2 = spam resource)
750webmail.rhs.mailpolice.com
466hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
461dsn.rfc-ignorant.org
358whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
348dynamic.rhs.mailpolice.com
320adv.rhs.mailpolice.com
192porn.rhs.mailpolice.com
83hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
79hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
52bulk.rhs.mailpolice.com
43hostkarma.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)
21rhsbl.ahbl.org
14multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
14ex.dnsbl.org
11fresh.spameatingmonkey.net
8hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
5dob.sibl.support-intelligence.net
2hostkarma.junkemailfilter.com (result 127.0.1.3 = MTA somtimes sends QUIT)
2bl.deadbeef.com
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1fraud.rhs.mailpolice.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 25 December 2009.