Blacklists Compared

10 February 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
146365(total number of IP addresses tested, including 525 at SDSC)
138892(union of most IP zones)
117593t1.dnsbl.net.au
109543zen.spamhaus.org (union of all results)
85879dnsbl.sorbs.net (union of all results)
85594sbl-xbl.spamhaus.org (union of all results)
84957xbl.spamhaus.org (union of all results)
84362cbl.abuseat.org
84337xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
84330sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
84327zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
78646no-more-funn.moensted.dk (union of all results)
71818block.blars.org
69394blackholes.five-ten-sg.com (union of all results)
68393dnsbl.sorbs.net (result 127.0.0.10 = dialup)
66387psbl.surriel.com
65543dnsbl.tqmcube.com (union of all results)
64520blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
64359pbl.spamhaus.org (union of all results)
64212dynablock.njabl.org
59828pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
59810zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
59430dnsbl-2.uceprotect.net
56857dnsbl-1.uceprotect.net
55245no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
42624dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
35655dnsbl-3.uceprotect.net
33371l2.apews.dnsbl.uceprotect.net
26900dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
22337bl.spamcop.net
19173wpbl.dnsbl.net.au
15102bl.csma.biz
14817no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
13881dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
13704unconfirmed.dsbl.org
13627list.dsbl.org
13615dsbl.dnsbl.net.au
13423cn-kr.blackholes.us (result 127.0.0.2 = China)
13423cn-kr.blackholes.us (union of all results)
12534ubl.unsubscore.com
8347no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
8252blacklist.spambag.org
7913dnsbl.tqmcube.com (result 127.0.0.5 = China)
7629dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
7607korea.services.net
7324unsure.nether.net
7115ix.dnsbl.manitu.net
6967china.blackholes.us
6445korea.blackholes.us
6358tr.countries.nerd.dk
6264turkey.blackholes.us
5638mail-abuse.blacklist.jippg.org
4895dnsbl.njabl.org (union of all results)
4589pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
4586zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
4572dnsbl.njabl.org (result 127.0.0.9 = open proxy)
4371rmst.dnsbl.net.au
3934brazil.blackholes.us
3755blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
3137dnsbl.ahbl.org (union of all results)
3011dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2722bl.spamcannibal.org
2711dnsbl.sorbs.net (result 127.0.0.6 = spam source)
2661russia.blackholes.us
2573zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
2573xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
2573sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
2157probes.dnsbl.net.au
2145spamsources.fabel.dk
1696taiwan.blackholes.us
1509list.dnswl.org (not a blacklist!)
1361japan.blackholes.us
1088dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
995argentina.blackholes.us
977blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
938thailand.blackholes.us
892dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
818zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
818sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
818sbl.spamhaus.org
765malaysia.blackholes.us
576blackholes.uceb.org (union of all results)
530blackholes.uceb.org (result 127.0.0.6 = spam haven)
406mexico.blackholes.us
338hongkong.blackholes.us
285no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
277blackholes.uceb.org (result 127.0.0.3 = spam source)
261singapore.blackholes.us
217no-more-funn.moensted.dk (result 127.0.0.9 = misc)
194work.drbl.croco.net
171sbl.csma.biz
156dnsbl.njabl.org (result 127.0.0.2 = open relay)
154query.bondedsender.org (not a blacklist!)
146dnsbl.njabl.org (result 127.0.0.4 = spam source)
131dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
114iadb.isipp.com (not a blacklist!)
110accredit.habeas.com (not a blacklist!)
103blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
90bl.deadbeef.com
73flowgoaway.com
65spam.wytnij.to
63multihop.dsbl.org
55dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
35blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
31dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
29blackholes.uceb.org (result 127.0.0.5 = dialup)
29relays.nether.net
27tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
27tor.dnsbl.sectoor.de (union of all results)
22ohps.dnsbl.net.au
21dnsbl.njabl.org (result 127.0.0.3 = dialup)
21dnsbl.ahbl.org (result 127.0.0.15 = open relay)
19multi.surbl.org
14spamguard.leadmon.net (union of all results)
13nigeria.blackholes.us
13dnsbl.ahbl.org (result 127.0.0.4 = spam source)
13exemptions.ahbl.org (not a blacklist!)
12dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
11spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
9rdts.dnsbl.net.au
7osps.dnsbl.net.au
7osrs.dnsbl.net.au
6blackholes.uceb.org (result 127.0.0.2 = open relay)
4dnsbl.sorbs.net (result 127.0.0.5 = open relay)
3spamguard.leadmon.net (result 127.0.0.3 = spam source)
3no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
3blackholes.brainerd.net
2dnsbl.antispam.or.id
2multi.uribl.com (union of all results)
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1multi.uribl.com (result 127.0.0.2 = spam resource)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1owps.dnsbl.net.au
1omrs.dnsbl.net.au
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 127.0.0.11 = 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)
1dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)

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

HitsDNS Zone
146365(total number of IP addresses whose names were tested, including 525 at SDSC)
87816(union of all domain zones)
63991rddn.dnsbl.net.au
56664abuse.rfc-ignorant.org
42830dynamic.rhs.mailpolice.com
36142whois.rfc-ignorant.org (union of all results)
27989l1.apews.rhsbl.uceprotect.net
22087whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
14057whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4241webmail.rhs.mailpolice.com
588postmaster.rfc-ignorant.org
499adv.rhs.mailpolice.com
343multi.surbl.org
285multi.uribl.com (union of all results)
283multi.uribl.com (result 127.0.0.2 = spam resource)
163rhsbl.ahbl.org
153bl.deadbeef.com
106dsn.rfc-ignorant.org (zone not intended for this use)
105bogusmx.rfc-ignorant.org
104bulk.rhs.mailpolice.com
3porn.rhs.mailpolice.com
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
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
80559(total number of domains tested, including 500 at SDSC)
16494(union of all domain zones)
7542whois.rfc-ignorant.org (union of all results)
6871whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4095abuse.rfc-ignorant.org
2267multi.surbl.org
2127webmail.rhs.mailpolice.com
1668multi.uribl.com (union of all results)
1629multi.uribl.com (result 127.0.0.2 = spam resource)
1440postmaster.rfc-ignorant.org
1003bogusmx.rfc-ignorant.org
788dsn.rfc-ignorant.org
671whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
476rhsbl.ahbl.org
337porn.rhs.mailpolice.com
257bulk.rhs.mailpolice.com
219adv.rhs.mailpolice.com
150blackhole.securitysage.com
70rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
70rhsbl.sorbs.net (union of all results)
35multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
29rddn.dnsbl.net.au (zone not intended for this use)
22l1.apews.rhsbl.uceprotect.net
16ex.dnsbl.org
10dynamic.rhs.mailpolice.com
5multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
3fraud.rhs.mailpolice.com
3bl.deadbeef.com
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 16 February 2007.