Blacklists Compared

29 August 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
150146(total number of IP addresses tested, including 237 at SDSC)
146470(union of most IP zones)
135867b.barracudacentral.org
132723zen.spamhaus.org (union of all results)
128783l2.apews.org
108040bl.spameatingmonkey.net
92691hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
90589dnsbl-2.uceprotect.net
89887zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
89653cbl.abuseat.org
88804dnsbl-1.uceprotect.net
88787dnsbl-3.uceprotect.net
87340dnsbl.sorbs.net (union of all results)
85533zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
77691psbl.surriel.com
62651dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
48010ubl.unsubscore.com
41651hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
36522no-more-funn.moensted.dk (union of all results)
35142dnsbl.sorbs.net (result 127.0.0.10 = dialup)
31354bl.spamcop.net
29843blackholes.five-ten-sg.com (union of all results)
26792db.wpbl.info
26615blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
24904no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
23464zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
15320ix.dnsbl.manitu.net
14266spam.dnsbl.sorbs.net
12870hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
12430mail-abuse.blacklist.jippg.org
9704no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
9105dnsbl.inps.de
8386korea.services.net
7074bl.spamcannibal.org
5168tr.countries.nerd.dk
4607spamsources.fabel.dk
3658ips.backscatterer.org
3604list.dnswl.org (not a blacklist!)
2982hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2352blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2301dnsbl.njabl.org (union of all results)
1867hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1850dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1252hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1050no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1031aspews.ext.sorbs.net
865blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
814no-more-funn.moensted.dk (result 127.0.0.9 = misc)
546accredit.habeas.com (not a blacklist!)
435dnsbl.sorbs.net (result 127.0.0.6 = spam source)
416query.bondedsender.org (not a blacklist!)
344dnsbl.njabl.org (result 127.0.0.4 = spam source)
249zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
222dnsbl.ahbl.org (union of all results)
179l2.bbfh.ext.sorbs.net
168hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
167dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
164iadb2.isipp.com (not a blacklist!)
121iadb.isipp.com (not a blacklist!)
109no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
107dnsbl.njabl.org (result 127.0.0.2 = open relay)
103tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
103tor.dnsbl.sectoor.de (union of all results)
54dnsbl.ahbl.org (result 127.0.0.4 = spam source)
47bl.deadbeef.com
33dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
32l1.bbfh.ext.sorbs.net
31dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
20zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
10spamguard.leadmon.net (union of all results)
9multi.uribl.com (result 127.0.0.2 = spam resource)
9blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
9multi.uribl.com (union of all results)
8dnsbl-0.uceprotect.net
6spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
6blackholes.brainerd.net
5dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
4hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
3multi.surbl.org
3spamguard.leadmon.net (result 127.0.0.8 = open proxy)
2dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
2blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
2dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1spamguard.leadmon.net (result 127.0.0.3 = 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
150146(total number of IP addresses whose names were tested, including 237 at SDSC)
88839hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
79015hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
73064(union of most domain zones)
64590l1.apews.org
57980abuse.rfc-ignorant.org
29201dynamic.rhs.mailpolice.com
24287whois.rfc-ignorant.org (union of all results)
16055whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
8232whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
8142hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
3952webmail.rhs.mailpolice.com
3266hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1599urired.spameatingmonkey.net
839hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
835hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
725adv.rhs.mailpolice.com
310hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
218hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
150hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
102multi.uribl.com (result 127.0.0.2 = spam resource)
102multi.uribl.com (union of all results)
98rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
98rhsbl.sorbs.net (union of all results)
51postmaster.rfc-ignorant.org
48multi.surbl.org
46bulk.rhs.mailpolice.com
34dsn.rfc-ignorant.org (zone not intended for this use)
31bogusmx.rfc-ignorant.org
28rhsbl.ahbl.org
25hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
10fresh.spameatingmonkey.net
10dob.sibl.support-intelligence.net
2porn.rhs.mailpolice.com
2bl.deadbeef.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
84426(total number of domains tested, including 231 at SDSC)
78119hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
21637(union of most domain zones)
8913urired.spameatingmonkey.net
8052hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
5607whois.rfc-ignorant.org (union of all results)
4881whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4702hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
4465abuse.rfc-ignorant.org
2934l1.apews.org
2564hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1890hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1387bogusmx.rfc-ignorant.org
1276multi.uribl.com (union of all results)
1266postmaster.rfc-ignorant.org
1259multi.uribl.com (result 127.0.0.2 = spam resource)
1220multi.surbl.org
1177hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
984webmail.rhs.mailpolice.com
726whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
569hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
428dynamic.rhs.mailpolice.com
393dsn.rfc-ignorant.org
312porn.rhs.mailpolice.com
283adv.rhs.mailpolice.com
86bulk.rhs.mailpolice.com
54hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
35hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
31hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
27rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
27rhsbl.sorbs.net (union of all results)
14ex.dnsbl.org
12multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
12rhsbl.ahbl.org
5multi.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)
1dob.sibl.support-intelligence.net


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 4 September 2009.