Blacklists Compared

28 November 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
130893(total number of IP addresses tested, including 170 at SDSC)
127804(union of most IP zones)
119763b.barracudacentral.org
116670zen.spamhaus.org (union of all results)
110419l2.apews.org
90629cbl.abuseat.org
90562zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
85588dnsbl.sorbs.net (union of all results)
84336dnsbl-1.uceprotect.net
83101hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
79356dnsbl-3.uceprotect.net
78276psbl.surriel.com
78042dnsbl-2.uceprotect.net
76712zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
69913ubl.unsubscore.com
67647dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
52990bl.spameatingmonkey.net
46155blackholes.five-ten-sg.com (union of all results)
42061blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
35595hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
34493no-more-funn.moensted.dk (union of all results)
31271db.wpbl.info
28648dnsbl.sorbs.net (result 127.0.0.10 = dialup)
27101bl.spamcop.net
21207bl.score.senderscore.com
19225no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
17539zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
17028spam.dnsbl.sorbs.net
15024hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
14494ix.dnsbl.manitu.net
11638mail-abuse.blacklist.jippg.org
10122no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
9400korea.services.net
9291dnsbl.inps.de
6961bl.spamcannibal.org
4348spamsources.fabel.dk
3709no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
3464list.dnswl.org (not a blacklist!)
3223ips.backscatterer.org
2999blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2596hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1816dnsbl.njabl.org (union of all results)
1782hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1446dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1371no-more-funn.moensted.dk (result 127.0.0.9 = misc)
1284hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1079blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1033zen.spamhaus.org (union of SBL and SBLCSS results)
857tr.countries.nerd.dk
792zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
597l2.bbfh.ext.sorbs.net
493accredit.habeas.com (not a blacklist!)
480aspews.ext.sorbs.net
405query.bondedsender.org (not a blacklist!)
386dnsbl.sorbs.net (result 127.0.0.6 = spam source)
241zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
200dnsbl.njabl.org (result 127.0.0.2 = open relay)
184l1.bbfh.ext.sorbs.net
170dnsbl.njabl.org (result 127.0.0.4 = spam source)
150iadb2.isipp.com (not a blacklist!)
129no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
119dnsbl.ahbl.org (union of all results)
116iadb.isipp.com (not a blacklist!)
115hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
98dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
70tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
70tor.dnsbl.sectoor.de (union of all results)
30bl.deadbeef.com
29dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
28dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
21dnsbl.ahbl.org (result 127.0.0.4 = spam source)
16blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
13spamguard.leadmon.net (union of all results)
12multi.uribl.com (result 127.0.0.2 = spam resource)
12multi.uribl.com (union of all results)
10dnsbl-0.uceprotect.net
7spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
6zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
5spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
3multi.surbl.org
3hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
3blackholes.brainerd.net
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
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
130893(total number of IP addresses whose names were tested, including 170 at SDSC)
74780hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
64263hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
61808(union of most domain zones)
53729l1.apews.org
49618abuse.rfc-ignorant.org
24520dynamic.rhs.mailpolice.com
21351whois.rfc-ignorant.org (union of all results)
16256whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
9249hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
5095whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
2997webmail.rhs.mailpolice.com
2777hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
790adv.rhs.mailpolice.com
586hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
534hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
518urired.spameatingmonkey.net
291hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
251bl.deadbeef.com
241hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
116rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
116rhsbl.sorbs.net (union of all results)
52hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
51postmaster.rfc-ignorant.org
38bulk.rhs.mailpolice.com
30dsn.rfc-ignorant.org (zone not intended for this use)
28multi.surbl.org
26rhsbl.ahbl.org
22bogusmx.rfc-ignorant.org
20multi.uribl.com (result 127.0.0.2 = spam resource)
20multi.uribl.com (union of all results)
6fresh.spameatingmonkey.net
5dob.sibl.support-intelligence.net
3porn.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
66978(total number of domains tested, including 156 at SDSC)
63504hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
16061(union of most domain zones)
6956hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
5795whois.rfc-ignorant.org (union of all results)
5443whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
5318hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
4321urired.spameatingmonkey.net
3366abuse.rfc-ignorant.org
2607hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1817l1.apews.org
1508postmaster.rfc-ignorant.org
1413hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1123bogusmx.rfc-ignorant.org
1073multi.surbl.org
928webmail.rhs.mailpolice.com
843multi.uribl.com (union of all results)
828multi.uribl.com (result 127.0.0.2 = spam resource)
558dsn.rfc-ignorant.org
536hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
352whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
294adv.rhs.mailpolice.com
225porn.rhs.mailpolice.com
185dynamic.rhs.mailpolice.com
126hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
87bulk.rhs.mailpolice.com
67hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
35hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
32rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
32rhsbl.sorbs.net (union of all results)
15ex.dnsbl.org
13rhsbl.ahbl.org
12multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
6dob.sibl.support-intelligence.net
5fresh.spameatingmonkey.net
5hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
3multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
2bl.deadbeef.com
1fraud.rhs.mailpolice.com
1hostkarma.junkemailfilter.com (result 127.0.1.3 = MTA somtimes sends QUIT)


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 3 December 2009.