Blacklists Compared

20 January 2007

[ 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 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 block.blars.org zone is also excluded.

HitsDNS Zone
141583(total number of IP addresses tested, including 487 at SDSC)
133998(union of most IP zones)
113214t1.dnsbl.net.au
102551zen.spamhaus.org (union of all results)
83401dnsbl.sorbs.net (union of all results)
79829sbl-xbl.spamhaus.org (union of all results)
79304xbl.spamhaus.org (union of all results)
78880cbl.abuseat.org
78815zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
78815sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
78814xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
70802block.blars.org
70593no-more-funn.moensted.dk (union of all results)
68992dnsbl.sorbs.net (result 127.0.0.10 = dialup)
65787blackholes.five-ten-sg.com (union of all results)
64621psbl.surriel.com
61411blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
58015dnsbl.tqmcube.com (union of all results)
53441no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
51659pbl.spamhaus.org (union of all results)
51589dynablock.njabl.org
51524zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
51524pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
45734dnsbl-1.uceprotect.net
41960dnsbl-2.uceprotect.net
40067dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
24358bl.spamcop.net
23500dnsbl-3.uceprotect.net
20948dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
18137wpbl.dnsbl.net.au
16579l2.apews.dnsbl.uceprotect.net
15516bl.csma.biz
13522dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
12160unconfirmed.dsbl.org
12076list.dsbl.org
12065dsbl.dnsbl.net.au
10271no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
10086ubl.unsubscore.com
9432cn-kr.blackholes.us (result 127.0.0.2 = China)
9432cn-kr.blackholes.us (union of all results)
8475unsure.nether.net
8126ix.dnsbl.manitu.net
7046dnsbl.njabl.org (union of all results)
6910blacklist.spambag.org
6474no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
6175mail-abuse.blacklist.jippg.org
6095dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
6056korea.services.net
5262korea.blackholes.us
5235rmst.dnsbl.net.au
5195tr.countries.nerd.dk
5186turkey.blackholes.us
4619dnsbl.tqmcube.com (result 127.0.0.5 = China)
4167china.blackholes.us
3789dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3630brazil.blackholes.us
3244blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
3079russia.blackholes.us
3044dnsbl.njabl.org (result 127.0.0.3 = dialup)
2605dnsbl.sorbs.net (result 127.0.0.6 = spam source)
2600bl.spamcannibal.org
2593dnsbl.ahbl.org (union of all results)
2469dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2184zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
2184xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
2184sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1866spamsources.fabel.dk
1849japan.blackholes.us
1823probes.dnsbl.net.au
1658taiwan.blackholes.us
1445list.dnswl.org (not a blacklist!)
1227thailand.blackholes.us
1020argentina.blackholes.us
944dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
857blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
779zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
779sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
779sbl.spamhaus.org
734dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
715malaysia.blackholes.us
672l1.spews.dnsbl.sorbs.net
644mexico.blackholes.us
481blackholes.uceb.org (union of all results)
448blackholes.uceb.org (result 127.0.0.6 = spam haven)
415l2.spews.dnsbl.sorbs.net
392singapore.blackholes.us
313hongkong.blackholes.us
309no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
269no-more-funn.moensted.dk (result 127.0.0.9 = misc)
223blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
201blackholes.uceb.org (result 127.0.0.3 = spam source)
201work.drbl.croco.net
195sbl.csma.biz
135zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
135pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
120iadb.isipp.com (not a blacklist!)
111query.bondedsender.org (not a blacklist!)
109dnsbl.njabl.org (result 127.0.0.4 = spam source)
108accredit.habeas.com (not a blacklist!)
106dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
105dnsbl.njabl.org (result 127.0.0.2 = open relay)
72flowgoaway.com
59spam.wytnij.to
58bl.deadbeef.com
57iadb2.isipp.com (not a blacklist!)
56multihop.dsbl.org
47blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
32tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
32dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
32tor.dnsbl.sectoor.de (union of all results)
25relays.nether.net
25spamguard.leadmon.net (union of all results)
23multi.surbl.org
23spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
22dnsbl.ahbl.org (result 127.0.0.15 = open relay)
22dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
20ohps.dnsbl.net.au
19osps.dnsbl.net.au
17nigeria.blackholes.us
14rdts.dnsbl.net.au
13exemptions.ahbl.org (not a blacklist!)
13dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
11blackholes.uceb.org (result 127.0.0.5 = dialup)
11owps.dnsbl.net.au
9blackholes.uceb.org (result 127.0.0.2 = open relay)
9dnsbl.ahbl.org (result 127.0.0.4 = spam source)
7osrs.dnsbl.net.au
4dnsbl.sorbs.net (result 127.0.0.5 = open relay)
3blackholes.brainerd.net
2dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1multi.uribl.com (result 127.0.0.2 = spam resource)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1omrs.dnsbl.net.au
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
1blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
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.

HitsDNS Zone
141583(total number of IP addresses whose names were tested, including 487 at SDSC)
90753(union of all domain zones)
67352rddn.dnsbl.net.au
56914abuse.rfc-ignorant.org
46740dynamic.rhs.mailpolice.com
38263whois.rfc-ignorant.org (union of all results)
32365l1.apews.rhsbl.uceprotect.net
23113whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
15151whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
5014webmail.rhs.mailpolice.com
547postmaster.rfc-ignorant.org
474adv.rhs.mailpolice.com
310multi.surbl.org
263multi.uribl.com (union of all results)
262multi.uribl.com (result 127.0.0.2 = spam resource)
243rhsbl.ahbl.org
146bl.deadbeef.com
100dsn.rfc-ignorant.org (zone not intended for this use)
98bogusmx.rfc-ignorant.org
85bulk.rhs.mailpolice.com
11porn.rhs.mailpolice.com
1multi.uribl.com (result 127.0.0.4 = opt-out spam resource)


Survey results for all known public domain-name-based DNS blacklists. Lookups were done on SMTP sender domains.

HitsDNS Zone
80939(total number of domains tested, including 462 at SDSC)
16423(union of all domain zones)
7722whois.rfc-ignorant.org (union of all results)
7016whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4164abuse.rfc-ignorant.org
2156multi.surbl.org
2040webmail.rhs.mailpolice.com
1785multi.uribl.com (union of all results)
1743multi.uribl.com (result 127.0.0.2 = spam resource)
1601postmaster.rfc-ignorant.org
972bogusmx.rfc-ignorant.org
821dsn.rfc-ignorant.org
706whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
551rhsbl.ahbl.org
337porn.rhs.mailpolice.com
220adv.rhs.mailpolice.com
194bulk.rhs.mailpolice.com
143blackhole.securitysage.com
62rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
62rhsbl.sorbs.net (union of all results)
37multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
29rddn.dnsbl.net.au (zone not intended for this use)
15ex.dnsbl.org
13l1.apews.rhsbl.uceprotect.net
10dynamic.rhs.mailpolice.com
5multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
2fraud.rhs.mailpolice.com
1bl.deadbeef.com
1cart00ney.surriel.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 25 January 2007.