Blacklists Compared

29 May 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
184896(total number of IP addresses tested, including 177 at SDSC)
181516(union of most IP zones)
169922zen.spamhaus.org (union of all results)
169024b.barracudacentral.org
157288l2.apews.org
145669cbl.abuseat.org
145652zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
132355hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
129830dnsbl-1.uceprotect.net
128260bl.mailspike.net (union of all results)
123802dnsbl-2.uceprotect.net
119153dnsbl-3.uceprotect.net
112383bl.spameatingmonkey.net
102615psbl.surriel.com
100255zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
97126bl.mailspike.net (result 127.0.0.10 = worst possible reputation)
95474dnsbl.sorbs.net (union of all results)
91643ubl.unsubscore.com
84703hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
62594spam.dnsbl.sorbs.net
58968bl.mailspike.net (result 127.0.0.2 = distributed spam wave participant)
58414dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
48803dnsbl.sorbs.net (result 127.0.0.10 = dialup)
48372bl.tiopan.com
46545blackholes.five-ten-sg.com (union of all results)
43493bl.spamcop.net
40935blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
34952db.wpbl.info
34828zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
31764bl.score.senderscore.com
27103ix.dnsbl.manitu.net
24966no-more-funn.moensted.dk (union of all results)
18542no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
16165mail-abuse.blacklist.jippg.org
15534bl.mailspike.net (result 127.0.0.12 = bad reputation)
12951dnsbl.inps.de
10496hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
7570bl.mailspike.net (result 127.0.0.11 = very bad reputation)
6168no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5397bl.spamcannibal.org
5083korea.services.net
4412list.dnswl.org (not a blacklist!)
4235blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4155dnsbl.ahbl.org (union of all results)
3829spamsources.fabel.dk
3780ips.backscatterer.org
3606dnsbl.sorbs.net (result 127.0.0.6 = spam source)
3006hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2575dnsbl.ahbl.org (result 127.0.0.4 = spam source)
2233tr.countries.nerd.dk
2211hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
2198wl.mailspike.net (union of all results) (not a blacklist!)
1867dnsbl.njabl.org (union of all results)
1803wl.mailspike.net (result 127.0.0.17 = possible legitimate sender) (not a blacklist!)
1605dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1576dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1403hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1341blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
509accredit.habeas.com (not a blacklist!)
420query.bondedsender.org (not a blacklist!)
419aspews.ext.sorbs.net
349wl.mailspike.net (result 127.0.0.18 = good reputation) (not a blacklist!)
331zen.spamhaus.org (union of SBL and SBLCSS results)
321zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
170dnsbl.njabl.org (result 127.0.0.2 = open relay)
169no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
164no-more-funn.moensted.dk (result 127.0.0.9 = misc)
153iadb2.isipp.com (not a blacklist!)
128tor.dnsbl.sectoor.de (union of all results)
126tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
120iadb.isipp.com (not a blacklist!)
108hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
100no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
92dnsbl.njabl.org (result 127.0.0.4 = spam source)
49bl.deadbeef.com
46wl.mailspike.net (result 127.0.0.19 = very good reputation) (not a blacklist!)
31blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
14dnsbl-0.uceprotect.net
14l2.bbfh.ext.sorbs.net
14spamguard.leadmon.net (union of all results)
11zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
11multi.surbl.org
10zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
9spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
7hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
5multi.uribl.com (result 127.0.0.2 = spam resource)
5multi.uribl.com (union of all results)
4dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
3spamguard.leadmon.net (result 127.0.0.8 = open proxy)
2tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)

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
184896(total number of IP addresses whose names were tested, including 177 at SDSC)
122458hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
111701hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
104716(union of most domain zones)
89022l1.apews.org
81533abuse.rfc-ignorant.org
35039whois.rfc-ignorant.org (union of all results)
33746dynamic.rhs.mailpolice.com
25267whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
12285hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
9772whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
5650webmail.rhs.mailpolice.com
3240hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2642hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
930adv.rhs.mailpolice.com
452hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
321urired.spameatingmonkey.net
280hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
191dbl.spamhaus.org
119hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
81hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
58postmaster.rfc-ignorant.org
49rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
49rhsbl.sorbs.net (union of all results)
40bulk.rhs.mailpolice.com
39dsn.rfc-ignorant.org (zone not intended for this use)
37rhsbl.ahbl.org
32bogusmx.rfc-ignorant.org
31multi.uribl.com (result 127.0.0.2 = spam resource)
31multi.uribl.com (union of all results)
19multi.surbl.org
15fresh.spameatingmonkey.net
15dob.sibl.support-intelligence.net
12porn.rhs.mailpolice.com
6hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
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
43667(total number of domains tested, including 158 at SDSC)
41408hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
9410(union of most domain zones)
5807hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
2949whois.rfc-ignorant.org (union of all results)
2836hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
2741abuse.rfc-ignorant.org
2709whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2128urired.spameatingmonkey.net
1971hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1644postmaster.rfc-ignorant.org
1105l1.apews.org
935hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
886dbl.spamhaus.org
864bogusmx.rfc-ignorant.org
785multi.surbl.org
643webmail.rhs.mailpolice.com
586multi.uribl.com (union of all results)
575multi.uribl.com (result 127.0.0.2 = spam resource)
459hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
309dsn.rfc-ignorant.org
266adv.rhs.mailpolice.com
240whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
114porn.rhs.mailpolice.com
43hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
40bulk.rhs.mailpolice.com
33hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
27rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
27rhsbl.sorbs.net (union of all results)
22dob.sibl.support-intelligence.net
19rhsbl.ahbl.org
18hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
16fresh.spameatingmonkey.net
14ex.dnsbl.org
10multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
8dynamic.rhs.mailpolice.com
4hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1fraud.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 3 June 2010.