Blacklists Compared

16 January 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, 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
221001(total number of IP addresses tested, including 197 at SDSC)
217178(union of most IP zones)
203694zen.spamhaus.org (union of all results)
186657l2.apews.org
166796cbl.abuseat.org
166745zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
165982b.barracudacentral.org
156174dnsbl-1.uceprotect.net
144142dnsbl-2.uceprotect.net
143121hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
141171dnsbl-3.uceprotect.net
136978psbl.surriel.com
134431dnsbl.sorbs.net (union of all results)
126566ubl.unsubscore.com
122579zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
97225dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
83097hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
62455blackholes.five-ten-sg.com (union of all results)
60514bl.spameatingmonkey.net
57944blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
52078dnsbl.sorbs.net (result 127.0.0.10 = dialup)
51432no-more-funn.moensted.dk (union of all results)
41922bl.spamcop.net
37037zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
33099bl.score.senderscore.com
32977db.wpbl.info
32157ix.dnsbl.manitu.net
31703no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
21322mail-abuse.blacklist.jippg.org
16567hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
16468spam.dnsbl.sorbs.net
11866no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
11452korea.services.net
10542dnsbl.inps.de
8061bl.spamcannibal.org
5121spamsources.fabel.dk
4697no-more-funn.moensted.dk (result 127.0.0.9 = misc)
4668list.dnswl.org (not a blacklist!)
3324blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
3091no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
3048tr.countries.nerd.dk
2958hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2842ips.backscatterer.org
2290dnsbl.njabl.org (union of all results)
2024dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1866hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1444hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1164blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
670zen.spamhaus.org (union of SBL and SBLCSS results)
567zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
497accredit.habeas.com (not a blacklist!)
492aspews.ext.sorbs.net
479l2.bbfh.ext.sorbs.net
413query.bondedsender.org (not a blacklist!)
249dnsbl.sorbs.net (result 127.0.0.6 = spam source)
231l1.bbfh.ext.sorbs.net
181dnsbl.ahbl.org (union of all results)
169dnsbl.njabl.org (result 127.0.0.2 = open relay)
154iadb2.isipp.com (not a blacklist!)
150no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
141tor.dnsbl.sectoor.de (union of all results)
139tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
131dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
109iadb.isipp.com (not a blacklist!)
103zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
97dnsbl.njabl.org (result 127.0.0.4 = spam source)
73hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
50dnsbl.ahbl.org (result 127.0.0.4 = spam source)
47dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
45bl.deadbeef.com
42dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
22blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
18dnsbl-0.uceprotect.net
13zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
8hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
7multi.surbl.org
7blackholes.brainerd.net
6spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
6multi.uribl.com (union of all results)
6spamguard.leadmon.net (union of all results)
5dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
4multi.uribl.com (result 127.0.0.2 = spam resource)
4dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
2tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)


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
221001(total number of IP addresses whose names were tested, including 197 at SDSC)
134212hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
121814hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
110845(union of most domain zones)
95843l1.apews.org
88382abuse.rfc-ignorant.org
40181dynamic.rhs.mailpolice.com
38680whois.rfc-ignorant.org (union of all results)
27863whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
12752hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
10817whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
4343webmail.rhs.mailpolice.com
3205hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2130hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
948adv.rhs.mailpolice.com
453hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
376urired.spameatingmonkey.net
304hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
175hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
136rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
136rhsbl.sorbs.net (union of all results)
73hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
61postmaster.rfc-ignorant.org
48bulk.rhs.mailpolice.com
45rhsbl.ahbl.org
36dsn.rfc-ignorant.org (zone not intended for this use)
31bogusmx.rfc-ignorant.org
28multi.uribl.com (result 127.0.0.2 = spam resource)
28multi.uribl.com (union of all results)
24fresh.spameatingmonkey.net
24dob.sibl.support-intelligence.net
22multi.surbl.org
11porn.rhs.mailpolice.com
4bl.deadbeef.com
2hostkarma.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
61286(total number of domains tested, including 180 at SDSC)
59078hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
14619(union of most domain zones)
7246hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
4966whois.rfc-ignorant.org (union of all results)
4659whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4349hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
3763urired.spameatingmonkey.net
3268abuse.rfc-ignorant.org
2325hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2003postmaster.rfc-ignorant.org
1516bogusmx.rfc-ignorant.org
1452hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1306l1.apews.org
1264multi.surbl.org
774webmail.rhs.mailpolice.com
651multi.uribl.com (union of all results)
634multi.uribl.com (result 127.0.0.2 = spam resource)
548dsn.rfc-ignorant.org
477hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
321adv.rhs.mailpolice.com
307whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
191porn.rhs.mailpolice.com
63bulk.rhs.mailpolice.com
60hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
32hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
25dynamic.rhs.mailpolice.com
24rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
24rhsbl.sorbs.net (union of all results)
23hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
18rhsbl.ahbl.org
15ex.dnsbl.org
13multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
7hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
7dob.sibl.support-intelligence.net
4multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
4fresh.spameatingmonkey.net
3fraud.rhs.mailpolice.com
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 21 January 2010.