Blacklists Compared

15 July 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
98693(total number of IP addresses tested, including 511 at SDSC)
87233(union of most IP zones)
64124block.blars.org
58112dnsbl.sorbs.net (union of all results)
43599dnsbl.tqmcube.com (union of all results)
42904blackholes.five-ten-sg.com (union of all results)
42040dnsbl.sorbs.net (result 127.0.0.10 = dialup)
41759t1.dnsbl.net.au
41664blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
33292sbl-xbl.spamhaus.org (union of all results)
32056xbl.spamhaus.org (union of all results)
30056psbl.surriel.com
29921dynablock.njabl.org
29590cbl.abuseat.org
29527sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
29524xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
23544cn-kr.blackholes.us (result 127.0.0.2 = China)
23544cn-kr.blackholes.us (union of all results)
18970no-more-funn.moensted.dk (union of all results)
18238dnsbl.tqmcube.com (result 127.0.0.5 = China)
18044china.blackholes.us
15437dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
14096dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
12914unconfirmed.dsbl.org
12876blacklist.spambag.org
12760list.dsbl.org
12753dsbl.dnsbl.net.au
11419bl.csma.biz
10463bl.spamcop.net
10326dnsbl-1.uceprotect.net
8932dnsbl-2.uceprotect.net
8848combined-hib.dnsiplists.completewhois.com (union of all results)
8847combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
8363no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
8323dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
8295dnsbl.sorbs.net (result 127.0.0.6 = spam source)
8153wpbl.dnsbl.net.au
7185dnsbl.njabl.org (union of all results)
6465no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
5761dnsbl.njabl.org (result 127.0.0.9 = open proxy)
5667korea.services.net
5500korea.blackholes.us
5325l2.spews.dnsbl.sorbs.net
5164unsure.nether.net
4449xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
4448sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
4306dnsbl.ahbl.org (union of all results)
4122no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
4055l1.spews.dnsbl.sorbs.net
3938dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
3858rmst.dnsbl.net.au
3804spamsources.fabel.dk
3769brazil.blackholes.us
3179dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
3108spews.dnsbl.net.au
2587dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
2083spam.wytnij.to
2060mail-abuse.blacklist.jippg.org
2002taiwan.blackholes.us
1866tr.countries.nerd.dk
1859ricn.dnsbl.net.au
1850turkey.blackholes.us
1681sbl.csma.biz
1670dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1643japan.blackholes.us
1459bl.spamcannibal.org
1435sbl.spamhaus.org
1432sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1119dnsbl-3.uceprotect.net
1047dnsbl.njabl.org (result 127.0.0.3 = dialup)
843argentina.blackholes.us
812probes.dnsbl.net.au
795mexico.blackholes.us
703blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
681russia.blackholes.us
498hongkong.blackholes.us
497malaysia.blackholes.us
393thailand.blackholes.us
351no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
343dnsbl.ahbl.org (result 127.0.0.4 = spam source)
322singapore.blackholes.us
322blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
256dnsbl.njabl.org (result 127.0.0.4 = spam source)
245no-more-funn.moensted.dk (result 127.0.0.9 = misc)
218dnsbl.antispam.or.id
177blackholes.intersil.net
163query.bondedsender.org (not a blacklist!)
154ohps.dnsbl.net.au
153work.drbl.croco.net
141dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
129dnsbl.njabl.org (result 127.0.0.2 = open relay)
129multihop.dsbl.org
127blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
116dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
86flowgoaway.com
80relays.ordb.org
67blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
55relays.nether.net
38no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
32blackholes.uceb.org (union of all results)
28osps.dnsbl.net.au
23dnsbl.sorbs.net (result 127.0.0.5 = open relay)
18rdts.dnsbl.net.au
17spamguard.leadmon.net (union of all results)
16blackholes.uceb.org (result 127.0.0.2 = open relay)
16exemptions.ahbl.org (not a blacklist!)
15tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
15tor.dnsbl.sectoor.de (union of all results)
14blackholes.uceb.org (result 127.0.0.3 = spam source)
13nigeria.blackholes.us
12dnsbl.ahbl.org (result 127.0.0.15 = open relay)
11blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
10spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
9owps.dnsbl.net.au
9dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
9dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
8osrs.dnsbl.net.au
8hil.habeas.com
7blackholes.brainerd.net
6spamguard.leadmon.net (result 127.0.0.3 = spam source)
6blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
4bl.deadbeef.com
3spamsites.dnsbl.net.au
2blackholes.uceb.org (result 127.0.0.5 = dialup)
2blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
2blackholes.five-ten-sg.com (result 127.0.0.13 = challenge-response source)
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1spamguard.leadmon.net (result 127.0.0.8 = open proxy)
1combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)

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
98693(total number of IP addresses whose names were tested, including 511 at SDSC)
50859(union of all domain zones)
38041abuse.rfc-ignorant.org
36535rddn.dnsbl.net.au
25451whois.rfc-ignorant.org (union of all results)
25021dynamic.rhs.mailpolice.com
19809whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
5645whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3359webmail.rhs.mailpolice.com
583rhsbl.ahbl.org
511adv.rhs.mailpolice.com
369postmaster.rfc-ignorant.org
85dsn.rfc-ignorant.org (zone not intended for this use)
83bulk.rhs.mailpolice.com
80bogusmx.rfc-ignorant.org
7porn.rhs.mailpolice.com
1blackhole.securitysage.com
1ex.dnsbl.org
1bl.deadbeef.com

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

HitsDNS Zone
54089(total number of domains tested, including 415 at SDSC)
10259(union of all domain zones)
4209whois.rfc-ignorant.org (union of all results)
3526abuse.rfc-ignorant.org
3488whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1576webmail.rhs.mailpolice.com
1504rhsbl.ahbl.org
1299postmaster.rfc-ignorant.org
941dsn.rfc-ignorant.org
725bogusmx.rfc-ignorant.org
721whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
287porn.rhs.mailpolice.com
213bulk.rhs.mailpolice.com
182adv.rhs.mailpolice.com
178blackhole.securitysage.com
51rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
51rhsbl.sorbs.net (union of all results)
30rddn.dnsbl.net.au (zone not intended for this use)
21ex.dnsbl.org
9dynamic.rhs.mailpolice.com
1fraud.rhs.mailpolice.com
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 15 August 2006.