Blacklists Compared

26 August 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
100550(total number of IP addresses tested, including 496 at SDSC)
94288(union of most IP zones)
76886t1.dnsbl.net.au
63851block.blars.org
60994dnsbl.sorbs.net (union of all results)
55690sbl-xbl.spamhaus.org (union of all results)
55148xbl.spamhaus.org (union of all results)
53202cbl.abuseat.org
53188xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
53184sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
51222blackholes.five-ten-sg.com (union of all results)
49748blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
46948dnsbl.sorbs.net (result 127.0.0.10 = dialup)
45872dnsbl.tqmcube.com (union of all results)
45638psbl.surriel.com
32567dynablock.njabl.org
27564no-more-funn.moensted.dk (union of all results)
21817dnsbl-1.uceprotect.net
21383dnsbl-2.uceprotect.net
19772cn-kr.blackholes.us (result 127.0.0.2 = China)
19772cn-kr.blackholes.us (union of all results)
19313dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
15335bl.spamcop.net
13661no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
13284china.blackholes.us
13169dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
13054dnsbl.tqmcube.com (result 127.0.0.5 = China)
12401unconfirmed.dsbl.org
12296list.dsbl.org
12291dsbl.dnsbl.net.au
11113blacklist.spambag.org
10624bl.csma.biz
8811no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
7891combined-hib.dnsiplists.completewhois.com (union of all results)
7890combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
7612dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
7355dnsbl.njabl.org (union of all results)
6983dnsbl.sorbs.net (result 127.0.0.6 = spam source)
6875wpbl.dnsbl.net.au
6811korea.services.net
6521ubl.unsubscore.com
6489korea.blackholes.us
5926dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
5780dnsbl.njabl.org (result 127.0.0.9 = open proxy)
4858l2.spews.dnsbl.sorbs.net
4840no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
4233xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
4233sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
4202dnsbl.ahbl.org (union of all results)
4167unsure.nether.net
4046l1.spews.dnsbl.sorbs.net
3955dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
3626spamsources.fabel.dk
3612spam.wytnij.to
3520brazil.blackholes.us
3385rmst.dnsbl.net.au
2699dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
2610mail-abuse.blacklist.jippg.org
1910dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1882taiwan.blackholes.us
1839tr.countries.nerd.dk
1833turkey.blackholes.us
1666argentina.blackholes.us
1367dnsbl-3.uceprotect.net
1333dnsbl.njabl.org (result 127.0.0.3 = dialup)
1308japan.blackholes.us
1281bl.spamcannibal.org
1111mexico.blackholes.us
1051probes.dnsbl.net.au
857blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
732sbl.csma.biz
718ricn.dnsbl.net.au
662russia.blackholes.us
647sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
647sbl.spamhaus.org
618thailand.blackholes.us
489malaysia.blackholes.us
336no-more-funn.moensted.dk (result 127.0.0.9 = misc)
336blackholes.uceb.org (union of all results)
330hongkong.blackholes.us
320blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
305no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
271singapore.blackholes.us
255blackholes.uceb.org (result 127.0.0.3 = spam source)
229dnsbl.ahbl.org (result 127.0.0.4 = spam source)
227blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
173query.bondedsender.org (not a blacklist!)
167blackholes.intersil.net
155dnsbl.njabl.org (result 127.0.0.4 = spam source)
139dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
104dnsbl.njabl.org (result 127.0.0.2 = open relay)
94ohps.dnsbl.net.au
88flowgoaway.com
77multihop.dsbl.org
76blackholes.uceb.org (result 127.0.0.5 = dialup)
64blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
54relays.ordb.org
50dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
48dnsbl.antispam.or.id
27rdts.dnsbl.net.au
25relays.nether.net
20osps.dnsbl.net.au
18tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
18tor.dnsbl.sectoor.de (union of all results)
17nigeria.blackholes.us
17exemptions.ahbl.org (not a blacklist!)
13spamguard.leadmon.net (union of all results)
12dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
11osrs.dnsbl.net.au
9spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
8hil.habeas.com
7dnsbl.sorbs.net (result 127.0.0.5 = open relay)
7dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
5blackholes.uceb.org (result 127.0.0.2 = open relay)
5owps.dnsbl.net.au
5dnsbl.ahbl.org (result 127.0.0.15 = open relay)
3blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
3bl.deadbeef.com
3blackholes.brainerd.net
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2spamguard.leadmon.net (result 127.0.0.8 = open proxy)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)

The blackholes.intersil.net zone "lists entrenched spammers, mainsleaze and mainsleaze wannabes who have pestered users at Intersil." The flowgoaway.com zone lists FloNetwork systems.

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

HitsDNS Zone
100550(total number of IP addresses whose names were tested, including 496 at SDSC)
57019(union of all domain zones)
42125rddn.dnsbl.net.au
40648abuse.rfc-ignorant.org
29374dynamic.rhs.mailpolice.com
28795whois.rfc-ignorant.org (union of all results)
21149whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
7649whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3383webmail.rhs.mailpolice.com
657rhsbl.ahbl.org
544adv.rhs.mailpolice.com
365postmaster.rfc-ignorant.org
99bulk.rhs.mailpolice.com
98bogusmx.rfc-ignorant.org
96dsn.rfc-ignorant.org (zone not intended for this use)
3porn.rhs.mailpolice.com
1blackhole.securitysage.com

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

HitsDNS Zone
56567(total number of domains tested, including 416 at SDSC)
9854(union of all domain zones)
3835whois.rfc-ignorant.org (union of all results)
3393abuse.rfc-ignorant.org
3184whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1467webmail.rhs.mailpolice.com
1389postmaster.rfc-ignorant.org
1066rhsbl.ahbl.org
1057dsn.rfc-ignorant.org
886bogusmx.rfc-ignorant.org
651whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
277porn.rhs.mailpolice.com
265bulk.rhs.mailpolice.com
174adv.rhs.mailpolice.com
151blackhole.securitysage.com
54rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
54rhsbl.sorbs.net (union of all results)
29rddn.dnsbl.net.au (zone not intended for this use)
18dynamic.rhs.mailpolice.com
15ex.dnsbl.org
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 3 September 2006.