Blacklists Compared

14 January 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
63993(total number of IP addresses tested, including 480 at SDSC)
56158(union of most IP zones)
40085block.blars.org
35926dnsbl.sorbs.net (union of all results)
30783t1.dnsbl.net.au
30403blackholes.five-ten-sg.com (union of all results)
29472blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
28900dnsbl.sorbs.net (result 127.0.0.10 = dialup)
24567sbl-xbl.spamhaus.org (union of all results)
22530xbl.spamhaus.org (union of all results)
21992psbl.surriel.com
21337xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
21320sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
21157cbl.abuseat.org
20307dynablock.njabl.org
16717no-more-funn.moensted.dk (union of all results)
11758sbl.csma.biz
11649cn-kr.blackholes.us (result 127.0.0.2 = China)
11649cn-kr.blackholes.us (union of all results)
10874unconfirmed.dsbl.org
10785list.dsbl.org
10780dsbl.dnsbl.net.au
10060blacklist.spambag.org
9604bl.spamcop.net
8728no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
7634china.blackholes.us
5927dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
5926l2.spews.dnsbl.sorbs.net
5872bl.csma.biz
5414l1.spews.dnsbl.sorbs.net
5411spews.dnsbl.net.au
5404combined-hib.dnsiplists.completewhois.com (union of all results)
5391combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
4639dnsbl.sorbs.net (result 127.0.0.6 = spam source)
4014korea.blackholes.us
4012unsure.nether.net
3978korea.services.net
3969wpbl.dnsbl.net.au
3880dnsbl.rangers.eu.org (union of all results)
3755no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
3653dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
3647no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
3197dnsbl.njabl.org (union of all results)
3119dnsbl.ahbl.org (union of all results)
2934rmst.dnsbl.net.au
2442sbl.spamhaus.org
2440sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
2328spamsources.fabel.dk
2278ricn.dnsbl.net.au
2097dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1770brazil.blackholes.us
1747sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1747dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1746opm.blitzed.org
1743xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1668japan.blackholes.us
1456dnsbl.antispam.or.id
1399spam.wytnij.to
1361dnsbl.ahbl.org (result 127.0.0.4 = spam source)
1318russia.blackholes.us
1062dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
968probes.dnsbl.net.au
962xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
961sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
951dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
928bl.spamcannibal.org
861dnsbl.njabl.org (result 127.0.0.3 = dialup)
828taiwan.blackholes.us
736mexico.blackholes.us
671mail-abuse.blacklist.jippg.org
630tr.countries.nerd.dk
629turkey.blackholes.us
376blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
370argentina.blackholes.us
368blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
349hongkong.blackholes.us
324malaysia.blackholes.us
301no-more-funn.moensted.dk (result 127.0.0.9 = misc)
295no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
244thailand.blackholes.us
187query.bondedsender.org (not a blacklist!)
174singapore.blackholes.us
152blackholes.intersil.net
145dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
144dnsbl.njabl.org (result 127.0.0.2 = open relay)
134blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
126relays.ordb.org
117dnsbl.njabl.org (result 127.0.0.4 = spam source)
89dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
89flowgoaway.com
74ohps.dnsbl.net.au
66multihop.dsbl.org
59dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
46dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
38blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
35dnsbl.regedit64.net
28rdts.dnsbl.net.au
23dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
21osps.dnsbl.net.au
18relays.nether.net
14dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
14blackholes.uceb.org (union of all results)
13osrs.dnsbl.net.au
13combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
12nigeria.blackholes.us
12exemptions.ahbl.org (not a blacklist!)
10hil.habeas.com
8tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
8dnsbl.sorbs.net (result 127.0.0.5 = open relay)
8tor.dnsbl.sectoor.de (union of all results)
8spamguard.leadmon.net (union of all results)
7blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
6spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
6blackholes.brainerd.net
5blackholes.uceb.org (result 127.0.0.6 = spam haven)
5blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
4blackholes.uceb.org (result 127.0.0.3 = spam source)
4blackholes.uceb.org (result 127.0.0.2 = open relay)
4owps.dnsbl.net.au
3blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
3dnsbl.ahbl.org (result 127.0.0.15 = open relay)
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
2bl.deadbeef.com
2dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
1blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
1spamsites.dnsbl.net.au
1omrs.dnsbl.net.au
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1spamguard.leadmon.net (result 127.0.0.8 = open proxy)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)

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
63993(total number of IP addresses whose names were tested, including 480 at SDSC)
36394(union of all domain zones)
23936rddn.dnsbl.net.au
22735abuse.rfc-ignorant.org
17613whois.rfc-ignorant.org (union of all results)
14473whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
10114dynamic.rhs.mailpolice.com
3140whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2286webmail.rhs.mailpolice.com
1349rhsbl.ahbl.org
579bl.deadbeef.com
557bulk.rhs.mailpolice.com
490adv.rhs.mailpolice.com
241postmaster.rfc-ignorant.org
117bogusmx.rfc-ignorant.org
114dsn.rfc-ignorant.org (zone not intended for this use)
5blackhole.securitysage.com
2porn.rhs.mailpolice.com
1cart00ney.surriel.com

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

HitsDNS Zone
34472(total number of domains tested, including 431 at SDSC)
7370(union of all domain zones)
2456whois.rfc-ignorant.org (union of all results)
2342abuse.rfc-ignorant.org
1949whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1269rhsbl.ahbl.org
1176postmaster.rfc-ignorant.org
957webmail.rhs.mailpolice.com
753dsn.rfc-ignorant.org
576bogusmx.rfc-ignorant.org
564bulk.rhs.mailpolice.com
507whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
187adv.rhs.mailpolice.com
143porn.rhs.mailpolice.com
137bl.deadbeef.com
127blackhole.securitysage.com
73rddn.dnsbl.net.au (zone not intended for this use)
34rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
34rhsbl.sorbs.net (union of all results)
27dynamic.rhs.mailpolice.com
16ex.dnsbl.org
3cart00ney.surriel.com
1fraud.rhs.mailpolice.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 1 February 2006.