Blacklists Compared

16 September 2006

[ 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 and query.bondedsender.org zones because they are not blacklists, and because it is too aggressive to be widely useful the block.blars.org zone is also excluded.

HitsDNS Zone
85109(total number of IP addresses tested, including 516 at SDSC)
78371(union of most IP zones)
64751t1.dnsbl.net.au
52376block.blars.org
49167sbl-xbl.spamhaus.org (union of all results)
49162zen.spamhaus.org (union of all results)
48656xbl.spamhaus.org (union of all results)
47548sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
47541zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
47537cbl.abuseat.org
47531xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
47457dnsbl.sorbs.net (union of all results)
42734psbl.surriel.com
41593blackholes.five-ten-sg.com (union of all results)
40089blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
37919dnsbl.sorbs.net (result 127.0.0.10 = dialup)
36643dnsbl.tqmcube.com (union of all results)
26639dynablock.njabl.org
24502no-more-funn.moensted.dk (union of all results)
21422dnsbl-2.uceprotect.net
18922dnsbl-1.uceprotect.net
16970dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
14879bl.spamcop.net
14133cn-kr.blackholes.us (result 127.0.0.2 = China)
14133cn-kr.blackholes.us (union of all results)
13861no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
9590unconfirmed.dsbl.org
9533china.blackholes.us
9482list.dsbl.org
9479dnsbl.tqmcube.com (result 127.0.0.5 = China)
9477dsbl.dnsbl.net.au
8765dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
8499blacklist.spambag.org
7465ubl.unsubscore.com
7301no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5888combined-hib.dnsiplists.completewhois.com (union of all results)
5847combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
5845dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
5782dnsbl.njabl.org (union of all results)
5242wpbl.dnsbl.net.au
4902korea.services.net
4611korea.blackholes.us
4570dnsbl.njabl.org (result 127.0.0.9 = open proxy)
4471bl.csma.biz
4370dnsbl.sorbs.net (result 127.0.0.6 = spam source)
4350dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
3344zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
3344xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
3344sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
3328dnsbl.ahbl.org (union of all results)
3094dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
3056no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
3049unsure.nether.net
2975brazil.blackholes.us
2800spamsources.fabel.dk
2662rmst.dnsbl.net.au
2149dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
2146tr.countries.nerd.dk
2130turkey.blackholes.us
1973mail-abuse.blacklist.jippg.org
1484dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1436dnsbl-3.uceprotect.net
1341spews.dnsbl.net.au
1257probes.dnsbl.net.au
1155taiwan.blackholes.us
1139argentina.blackholes.us
1127japan.blackholes.us
973russia.blackholes.us
968dnsbl.njabl.org (result 127.0.0.3 = dialup)
868blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
726mexico.blackholes.us
633thailand.blackholes.us
620sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
620sbl.spamhaus.org
618zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
384malaysia.blackholes.us
326blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
265l1.spews.dnsbl.sorbs.net
253blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
243no-more-funn.moensted.dk (result 127.0.0.9 = misc)
236no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
232l2.spews.dnsbl.sorbs.net
230hongkong.blackholes.us
223dnsbl.ahbl.org (result 127.0.0.4 = spam source)
207singapore.blackholes.us
179blackholes.uceb.org (union of all results)
174sbl.csma.biz
144dnsbl.njabl.org (result 127.0.0.4 = spam source)
141blackholes.uceb.org (result 127.0.0.3 = spam source)
139dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
131spam.wytnij.to
124query.bondedsender.org (not a blacklist!)
122work.drbl.croco.net
109dnsbl.njabl.org (result 127.0.0.2 = open relay)
105ricn.dnsbl.net.au
81flowgoaway.com
72multihop.dsbl.org
64ohps.dnsbl.net.au
58relays.ordb.org
54dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
52blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
45dnsbl.antispam.or.id
41combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
31blackholes.uceb.org (result 127.0.0.5 = dialup)
27relays.nether.net
24tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
24tor.dnsbl.sectoor.de (union of all results)
21osps.dnsbl.net.au
17nigeria.blackholes.us
16exemptions.ahbl.org (not a blacklist!)
15rdts.dnsbl.net.au
13multi.surbl.org
13hil.habeas.com
12spamguard.leadmon.net (union of all results)
10bl.spamcannibal.org
9spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
8osrs.dnsbl.net.au
8dnsbl.ahbl.org (result 127.0.0.15 = open relay)
7blackholes.uceb.org (result 127.0.0.2 = open relay)
7dnsbl.sorbs.net (result 127.0.0.5 = open relay)
7dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
5owps.dnsbl.net.au
4bl.deadbeef.com
3blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2blackholes.brainerd.net
1spamguard.leadmon.net (result 127.0.0.8 = open proxy)
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 127.0.0.11 = TCPA violator)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
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
85109(total number of IP addresses whose names were tested, including 516 at SDSC)
48711(union of all domain zones)
34956abuse.rfc-ignorant.org
34095rddn.dnsbl.net.au
25395whois.rfc-ignorant.org (union of all results)
23924dynamic.rhs.mailpolice.com
18438whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
6959whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2775webmail.rhs.mailpolice.com
608rhsbl.ahbl.org
541adv.rhs.mailpolice.com
295postmaster.rfc-ignorant.org
285multi.surbl.org
114bulk.rhs.mailpolice.com
86bogusmx.rfc-ignorant.org
82dsn.rfc-ignorant.org (zone not intended for this use)
5porn.rhs.mailpolice.com
1blackhole.securitysage.com
1bl.deadbeef.com

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

HitsDNS Zone
56131(total number of domains tested, including 417 at SDSC)
11413(union of all domain zones)
4175whois.rfc-ignorant.org (union of all results)
3541whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3353abuse.rfc-ignorant.org
2089multi.surbl.org
1514webmail.rhs.mailpolice.com
1320postmaster.rfc-ignorant.org
939dsn.rfc-ignorant.org
837bogusmx.rfc-ignorant.org
664rhsbl.ahbl.org
634whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
282porn.rhs.mailpolice.com
221bulk.rhs.mailpolice.com
190adv.rhs.mailpolice.com
127blackhole.securitysage.com
55rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
55rhsbl.sorbs.net (union of all results)
24rddn.dnsbl.net.au (zone not intended for this use)
20ex.dnsbl.org
9dynamic.rhs.mailpolice.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 22 September 2006.