Blacklists Compared

27 November 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, swl.spamhaus.org, and wl.mailspike.net zones because they are not blacklists. Because they are too aggressive to be widely useful the spam.dnsbl.sorbs.net and l2.apews.org zones are also excluded from the union.

HitsDNS Zone
112026(total number of IP addresses tested, including 163 at SDSC)
108833(union of most IP zones)
100601b.barracudacentral.org
98933zen.spamhaus.org (union of all results)
95922l2.apews.org
93107zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
93080cbl.abuseat.org
77543hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
72772dnsbl-1.uceprotect.net
65247dnsbl-2.uceprotect.net
64207psbl.surriel.com
63792bl.mailspike.net (union of all results)
63540dnsbl-3.uceprotect.net
63214zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
59076bl.spameatingmonkey.net
53585bl.tiopan.com
51853spam.dnsbl.sorbs.net
43932ubl.unsubscore.com
42397hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
39594blackholes.five-ten-sg.com (union of all results)
34936bl.mailspike.net (result 127.0.0.2 = distributed spam wave participant)
29326dnsbl.sorbs.net (union of all results)
28651bl.mailspike.net (result 127.0.0.10 = worst possible reputation)
28028bl.score.senderscore.com
27257db.wpbl.info
25350blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
23909bl.spamcop.net
19320dnsbl.sorbs.net (result 127.0.0.10 = dialup)
17746bl.mailspike.net (result 127.0.0.11 = very bad reputation)
14789ix.dnsbl.manitu.net
14668zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
13545dnsbl.inps.de
12850blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
12201no-more-funn.moensted.dk (union of all results)
11672mail-abuse.blacklist.jippg.org
10608hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
8170bl.mailspike.net (result 127.0.0.12 = bad reputation)
7961dnsbl.sorbs.net (result 127.0.0.6 = spam source)
7925no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
5228list.dnswl.org (not a blacklist!)
4267dnsbl.ahbl.org (union of all results)
3901wl.mailspike.net (union of all results) (not a blacklist!)
3862dnsbl.ahbl.org (result 127.0.0.4 = spam source)
3764no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
3654ips.backscatterer.org
3085hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2879dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
2859bl.spamcannibal.org
2557wl.mailspike.net (result 127.0.0.18 = good reputation) (not a blacklist!)
2464korea.services.net
2317spamsources.fabel.dk
2153hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1367blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1293wl.mailspike.net (result 127.0.0.17 = possible legitimate sender) (not a blacklist!)
1079hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
989dnsbl.njabl.org (union of all results)
828dnsbl.njabl.org (result 127.0.0.9 = open proxy)
707tr.countries.nerd.dk
589accredit.habeas.com (not a blacklist!)
546l2.bbfh.ext.sorbs.net
497query.bondedsender.org (not a blacklist!)
433aspews.ext.sorbs.net
389zen.spamhaus.org (union of SBL and SBLCSS results)
388zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
372no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
325dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
300l1.bbfh.ext.sorbs.net
161dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
161dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
161dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
147iadb2.isipp.com (not a blacklist!)
142no-more-funn.moensted.dk (result 127.0.0.9 = misc)
125iadb.isipp.com (not a blacklist!)
120dnsbl.njabl.org (result 127.0.0.2 = open relay)
116hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
80dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
73no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
62tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
62tor.dnsbl.sectoor.de (union of all results)
51wl.mailspike.net (result 127.0.0.19 = very good reputation) (not a blacklist!)
41dnsbl.njabl.org (result 127.0.0.4 = spam source)
34bl.deadbeef.com
27blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
18swl.spamhaus.org (union of all results) (not a blacklist!)
12multi.surbl.org
11zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
10swl.spamhaus.org (result 127.0.2.103 = sends transactions - temporary listing) (not a blacklist!)
8dnsbl-0.uceprotect.net
8swl.spamhaus.org (result 127.0.2.2 = sends individual mail) (not a blacklist!)
6hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
5spamguard.leadmon.net (union of all results)
3spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
2spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
1zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
1multi.uribl.com (result 127.0.0.2 = spam resource)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1multi.uribl.com (union of all results)
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
112026(total number of IP addresses whose names were tested, including 163 at SDSC)
64873hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
55210hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
48740(union of most domain zones)
42534abuse.rfc-ignorant.org
41334l1.apews.org
16715whois.rfc-ignorant.org (union of all results)
12482whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
6315hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
4236whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
3935hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1715hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
700hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
354hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
311urired.spameatingmonkey.net
273dbl.spamhaus.org
141hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
75hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
48multi.surbl.org
43postmaster.rfc-ignorant.org
38rhsbl.ahbl.org
21hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
19multi.uribl.com (result 127.0.0.2 = spam resource)
19dsn.rfc-ignorant.org (zone not intended for this use)
19multi.uribl.com (union of all results)
14bogusmx.rfc-ignorant.org
10dob.sibl.support-intelligence.net
7fresh.spameatingmonkey.net
2hostkarma.junkemailfilter.com (result 127.0.1.3 = MTA somtimes sends QUIT)
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
57656(total number of domains tested, including 107 at SDSC)
47887hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
11632(union of most domain zones)
6210hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
5860hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
3659whois.rfc-ignorant.org (union of all results)
3406whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2924hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2855abuse.rfc-ignorant.org
2809hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
2736urired.spameatingmonkey.net
2371postmaster.rfc-ignorant.org
1525dbl.spamhaus.org
1182hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1115l1.apews.org
772multi.surbl.org
578bogusmx.rfc-ignorant.org
466hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
451multi.uribl.com (union of all results)
442multi.uribl.com (result 127.0.0.2 = spam resource)
315dsn.rfc-ignorant.org
253whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
249fresh.spameatingmonkey.net
135dob.sibl.support-intelligence.net
55hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
19hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
19hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
18rhsbl.ahbl.org
8multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
8ex.dnsbl.org
2bl.deadbeef.com
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1hostkarma.junkemailfilter.com (result 127.0.1.3 = MTA somtimes sends QUIT)
This document was last updated by Jeff Makey <jeff@sdsc.edu> on 2 December 2010.