Blacklists Compared

22 January 2005

[ 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.

HitsDNS Zone
32771(total number of IP addresses tested, including 602 at SDSC)
28064(union of most IP zones)
23271t1.dnsbl.net.au
20383blackholes.five-ten-sg.com (union of all results)
19619blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
15809dnsbl.sorbs.net (union of all results)
13880sbl-xbl.spamhaus.org (union of all results)
13340cn-kr.blackholes.us (union of all results)
12943no-more-funn.moensted.dk (union of all results)
12726xbl.spamhaus.org (union of all results)
12247sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
12245xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
12240cbl.abuseat.org
10869dnsbl.sorbs.net (result 127.0.0.10 = dialup)
10555cn-kr.blackholes.us (result 127.0.0.3 = Korea)
10555korea.blackholes.us
10547korea.services.net
10206no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
9391dynablock.njabl.org
8408combined-hib.dnsiplists.completewhois.com (union of all results)
8386combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
8019unconfirmed.dsbl.org
7925list.dsbl.org
7922dsbl.dnsbl.net.au
7819rmst.dnsbl.net.au
5940sbl.csma.biz
4444psbl.surriel.com
3766bl.csma.biz
3660bl.spamcop.net
3625ricn.dnsbl.net.au
3292blacklist.spambag.org
3281dnsbl.njabl.org (union of all results)
3194wpbl.dnsbl.net.au
3157dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2785cn-kr.blackholes.us (result 127.0.0.2 = China)
2785china.blackholes.us
2508spamsources.fabel.dk
2433dnsbl.ahbl.org (union of all results)
2384dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2157l2.spews.dnsbl.sorbs.net
1909opm.blitzed.org
1900spews.dnsbl.net.au
1898xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1898sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1851dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1819spam.wytnij.to
1790l1.spews.dnsbl.sorbs.net
1626pdl.blackholes.us
1556dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1312sbl.spamhaus.org
1289sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1241dnsbl.regedit64.net
1214dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1209no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1081bl.spamcannibal.org
1071probes.dnsbl.net.au
909dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
886dnsbl.rangers.eu.org (union of all results)
858no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
849unsure.nether.net
838dnsbl.ahbl.org (result 127.0.0.4 = spam source)
743dnsbl.antispam.or.id
706dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
661dnsbl.njabl.org (result 127.0.0.3 = dialup)
611brazil.blackholes.us
520level3.blackholes.us
490ybl.megacity.org
467no-more-funn.moensted.dk (result 127.0.0.9 = misc)
438blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
408japan.blackholes.us
385taiwan.blackholes.us
333work.drbl.croco.net
274comcast.blackholes.us
270cw.blackholes.us
229russia.blackholes.us
228rr.blackholes.us
228no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
227charter.blackholes.us
225blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
217mexico.blackholes.us
201blackholes.intersil.net
182interbusiness.blackholes.us
177qwest.blackholes.us
169mail-abuse.blacklist.jippg.org
148argentina.blackholes.us
142hongkong.blackholes.us
134dnsbl.njabl.org (result 127.0.0.4 = spam source)
133query.bondedsender.org (not a blacklist!)
122verio.blackholes.us
117turkey.blackholes.us
115tr.countries.nerd.dk
113xo.blackholes.us
113dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
113dnsbl.njabl.org (result 127.0.0.2 = source or relay)
106above.blackholes.us
104dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
102ohps.dnsbl.net.au
96relays.ordb.org
95malaysia.blackholes.us
93flowgoaway.com
92wanadoo-fr.blackholes.us
80multihop.dsbl.org
79dialup.blacklist.jippg.org (union of all results)
78singapore.blackholes.us
77thailand.blackholes.us
77dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
76internap.blackholes.us
70cybercon.blackholes.us
62dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
58blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
54ph.rbl.cluecentral.net
53he.blackholes.us
51osps.dnsbl.net.au
42inflow.blackholes.us
37osrs.dnsbl.net.au
37relays.nether.net
37dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
35nigeria.blackholes.us
34bellsouth.blackholes.us
32covad.blackholes.us
30telstra.blackholes.us
30blackholes.uceb.org (union of all results)
27rdts.dnsbl.net.au
27blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
23yipes.blackholes.us
22combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
21infolink.blackholes.us
20blackholes.uceb.org (result 127.0.0.3 = spam source)
20dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
19a2000.blackholes.us
19exemptions.ahbl.org (not a blacklist!)
17rogers.blackholes.us
17eli.blackholes.us
16rackspace.blackholes.us
15dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
15dnsbl.ahbl.org (result 127.0.0.15 = open relay)
14blackholes.brainerd.net
13dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
11maxim.blackholes.us
10epoch.blackholes.us
10affinity.blackholes.us
10blackholes.uceb.org (result 127.0.0.2 = open relay)
10dnsbl.sorbs.net (result 127.0.0.5 = open relay)
10blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
9broadwing.blackholes.us
8hil.habeas.com
8satos.rbl.cluecentral.net
7swbell.blackholes.us
7olm.blackholes.us
7navisite.blackholes.us
5spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
5spamguard.leadmon.net (union of all results)
4pajo.blackholes.us
4blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
2ciberlynx.blackholes.us
2burst.blackholes.us
2dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
2bl.deadbeef.com
2dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1owps.dnsbl.net.au
1omrs.dnsbl.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1relays.bl.kundenserver.de
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)

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
32771(total number of IP addresses whose names were tested, including 602 at SDSC)
10837(union of all domain zones)
7775abuse.rfc-ignorant.org
5284rddn.dnsbl.net.au
2756whois.rfc-ignorant.org (union of all results)
2268dynamic.rhs.mailpolice.com
1913whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1380webmail.rhs.mailpolice.com
845whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
446bulk.rhs.mailpolice.com
402rhsbl.ahbl.org
290adv.rhs.mailpolice.com
211bl.deadbeef.com
20dsn.rfc-ignorant.org (zone not intended for this use)
19postmaster.rfc-ignorant.org
6blackhole.securitysage.com
6fraud.rhs.mailpolice.com
4porn.rhs.mailpolice.com
2bogusmx.rfc-ignorant.org
1cart00ney.surriel.com

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

HitsDNS Zone
23573(total number of domains tested, including 497 at SDSC)
7084(union of all domain zones)
2669whois.rfc-ignorant.org (union of all results)
2281abuse.rfc-ignorant.org
2248whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1206postmaster.rfc-ignorant.org
971dsn.rfc-ignorant.org
931webmail.rhs.mailpolice.com
799bulk.rhs.mailpolice.com
695rhsbl.ahbl.org
421whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
393bogusmx.rfc-ignorant.org
243blackhole.securitysage.com
208bl.deadbeef.com
190adv.rhs.mailpolice.com
114rddn.dnsbl.net.au (zone not intended for this use)
68dynamic.rhs.mailpolice.com
65rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
65rhsbl.sorbs.net (union of all results)
58porn.rhs.mailpolice.com
15ex.dnsbl.org
3cart00ney.surriel.com
1fraud.rhs.mailpolice.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 3 February 2005.