Blacklists Compared

21 July 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.

HitsDNS Zone
188543(total number of IP addresses tested, including 604 at SDSC)
181720(union of most IP zones)
147875l2.apews.dnsbl.uceprotect.net
146407zen.spamhaus.org (union of all results)
138946t1.dnsbl.net.au
107888sbl-xbl.spamhaus.org (union of all results)
107057xbl.spamhaus.org (union of all results)
106712cbl.abuseat.org
106676zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
106665xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
106659sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
106038dynablock.njabl.org
106038pbl.spamhaus.org (union of all results)
100505dnsbl.sorbs.net (union of all results)
98937dnsbl.tqmcube.com (union of all results)
95371zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
95371pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
87451no-more-funn.moensted.dk (union of all results)
77935blackholes.five-ten-sg.com (union of all results)
72590blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
69454psbl.surriel.com
68798dnsbl.sorbs.net (result 127.0.0.10 = dialup)
62311no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
62224dnsbl-2.uceprotect.net
61075dnsbl-1.uceprotect.net
59135dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
48540dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
40522sbl.csma.biz
38258bl.spamcop.net
37780dnsbl-3.uceprotect.net
25636dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
23034db.wpbl.info
22323no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
20702ubl.unsubscore.com
19183cn-kr.blackholes.us (result 127.0.0.2 = China)
19183cn-kr.blackholes.us (union of all results)
15459unconfirmed.dsbl.org
15318list.dsbl.org
15315dsbl.dnsbl.net.au
14111bl.csma.biz
13816dnsbl.tqmcube.com (result 127.0.0.5 = China)
12958korea.services.net
12645dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
10994ix.dnsbl.manitu.net
10835zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
10835pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
10748china.blackholes.us
10384tr.countries.nerd.dk
8917mail-abuse.blacklist.jippg.org
8818turkey.blackholes.us
8540korea.blackholes.us
7266combined-hib.dnsiplists.completewhois.com (union of all results)
7260combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
4354ips.backscatterer.org
4140blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4057dnsbl.njabl.org (union of all results)
4029rmst.dnsbl.net.au
3896russia.blackholes.us
3828dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3826spamsources.fabel.dk
3801bl.spamcannibal.org
3716list.dnswl.org (not a blacklist!)
3238brazil.blackholes.us
2766dnsbl.ahbl.org (union of all results)
2634dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2089no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1526taiwan.blackholes.us
1448probes.dnsbl.net.au
1381zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1381xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1381sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1247japan.blackholes.us
1228argentina.blackholes.us
1087blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1052thailand.blackholes.us
1005zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1005sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1005sbl.spamhaus.org
778malaysia.blackholes.us
729mexico.blackholes.us
596blackholes.uceb.org (union of all results)
540hongkong.blackholes.us
532blackholes.uceb.org (result 127.0.0.6 = spam haven)
484dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
465no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
456no-more-funn.moensted.dk (result 127.0.0.9 = misc)
399dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
297singapore.blackholes.us
282blackholes.uceb.org (result 127.0.0.3 = spam source)
261work.drbl.croco.net
159query.bondedsender.org (not a blacklist!)
151iadb2.isipp.com (not a blacklist!)
151iadb.isipp.com (not a blacklist!)
146dnsbl.njabl.org (result 127.0.0.4 = spam source)
143bl.deadbeef.com
122accredit.habeas.com (not a blacklist!)
100multihop.dsbl.org
90ohps.dnsbl.net.au
83dnsbl.njabl.org (result 127.0.0.2 = open relay)
77spam.wytnij.to
72blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
67dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
49relays.nether.net
43dnsbl.ahbl.org (result 127.0.0.4 = spam source)
42blackholes.uceb.org (result 127.0.0.5 = dialup)
39blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
34tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
34tor.dnsbl.sectoor.de (union of all results)
32multi.surbl.org
28dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
17rdts.dnsbl.net.au
16nigeria.blackholes.us
15spamguard.leadmon.net (union of all results)
14dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
13blackholes.uceb.org (result 127.0.0.2 = open relay)
13blackholes.brainerd.net
11osps.dnsbl.net.au
11spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
11exemptions.ahbl.org (not a blacklist!)
7multi.uribl.com (result 127.0.0.2 = spam resource)
7multi.uribl.com (union of all results)
6owps.dnsbl.net.au
6combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
6dnsbl.ahbl.org (result 127.0.0.15 = open relay)
5blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
4osrs.dnsbl.net.au
4spamguard.leadmon.net (result 127.0.0.3 = spam source)
3omrs.dnsbl.net.au
2dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1spamsites.dnsbl.net.au
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
1no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
1dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)

Survey results for all known public domain-name-based DNS blacklists. Lookups were done on the domain names of connecting IP addresses.

HitsDNS Zone
188543(total number of IP addresses whose names were tested, including 604 at SDSC)
118553(union of all domain zones)
106652l1.apews.rhsbl.uceprotect.net
83525rddn.dnsbl.net.au
73301abuse.rfc-ignorant.org
49309dynamic.rhs.mailpolice.com
45605whois.rfc-ignorant.org (union of all results)
26742whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
18863whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
11259webmail.rhs.mailpolice.com
593multi.surbl.org
479adv.rhs.mailpolice.com
474multi.uribl.com (union of all results)
473multi.uribl.com (result 127.0.0.2 = spam resource)
111postmaster.rfc-ignorant.org
96rhsbl.ahbl.org
94bulk.rhs.mailpolice.com
86bogusmx.rfc-ignorant.org
81dsn.rfc-ignorant.org (zone not intended for this use)
66rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
66rhsbl.sorbs.net (union of all results)
59bl.deadbeef.com
19porn.rhs.mailpolice.com
2ex.dnsbl.org
1multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
1blackhole.securitysage.com

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

HitsDNS Zone
111175(total number of domains tested, including 598 at SDSC)
23414(union of all domain zones)
10779whois.rfc-ignorant.org (union of all results)
9983whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
5646abuse.rfc-ignorant.org
2906multi.surbl.org
2693l1.apews.rhsbl.uceprotect.net
2346postmaster.rfc-ignorant.org
2209multi.uribl.com (union of all results)
2149multi.uribl.com (result 127.0.0.2 = spam resource)
2054webmail.rhs.mailpolice.com
1566bogusmx.rfc-ignorant.org
1081dsn.rfc-ignorant.org
796whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
425porn.rhs.mailpolice.com
310rhsbl.ahbl.org
246bulk.rhs.mailpolice.com
197blackhole.securitysage.com
197adv.rhs.mailpolice.com
105rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
105rhsbl.sorbs.net (union of all results)
57multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
55rddn.dnsbl.net.au (zone not intended for this use)
22dynamic.rhs.mailpolice.com
20ex.dnsbl.org
5bl.deadbeef.com
3multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1fraud.rhs.mailpolice.com
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 27 July 2007.