Blacklists Compared

18 November 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
161988(total number of IP addresses tested, including 505 at SDSC)
152873(union of most IP zones)
125767t1.dnsbl.net.au
99843block.blars.org
89894dnsbl.sorbs.net (union of all results)
89555sbl-xbl.spamhaus.org (union of all results)
89392zen.spamhaus.org (union of all results)
88930xbl.spamhaus.org (union of all results)
87758sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
87705xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
87643cbl.abuseat.org
87604zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
78161blackholes.five-ten-sg.com (union of all results)
77560no-more-funn.moensted.dk (union of all results)
76596blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
75463dnsbl.sorbs.net (result 127.0.0.10 = dialup)
69670dnsbl.tqmcube.com (union of all results)
61831psbl.surriel.com
53883dynablock.njabl.org
51738no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
51035dnsbl-3.uceprotect.net
43547dnsbl-1.uceprotect.net
40274dnsbl-2.uceprotect.net
33797dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
24516bl.spamcop.net
21696bl.csma.biz
21372cn-kr.blackholes.us (result 127.0.0.2 = China)
21372cn-kr.blackholes.us (union of all results)
20552no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
17184dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
15903unconfirmed.dsbl.org
15747list.dsbl.org
15732dsbl.dnsbl.net.au
14638dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
13860dnsbl.tqmcube.com (result 127.0.0.5 = China)
13541china.blackholes.us
12489ubl.unsubscore.com
11211blacklist.spambag.org
8778korea.services.net
8653dnsbl.njabl.org (union of all results)
7756korea.blackholes.us
7377dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
6841rmst.dnsbl.net.au
6155mail-abuse.blacklist.jippg.org
6008dnsbl.njabl.org (result 127.0.0.9 = open proxy)
5735brazil.blackholes.us
4786tr.countries.nerd.dk
4640no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
4462spews.dnsbl.net.au
4264dnsbl.ahbl.org (union of all results)
4112dnsbl.sorbs.net (result 127.0.0.6 = spam source)
4106wpbl.dnsbl.net.au
3828dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
3752sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
3751xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
3747zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
3575spamsources.fabel.dk
3472turkey.blackholes.us
3048unsure.nether.net
2731bl.spamcannibal.org
2358dnsbl.njabl.org (result 127.0.0.3 = dialup)
2115taiwan.blackholes.us
1918ricn.dnsbl.net.au
1861probes.dnsbl.net.au
1835japan.blackholes.us
1751dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1701argentina.blackholes.us
1328russia.blackholes.us
1072dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1070malaysia.blackholes.us
880blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
849thailand.blackholes.us
829zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
829sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
829sbl.spamhaus.org
695hongkong.blackholes.us
526singapore.blackholes.us
525blackholes.uceb.org (union of all results)
513no-more-funn.moensted.dk (result 127.0.0.9 = misc)
512mexico.blackholes.us
425blackholes.uceb.org (result 127.0.0.6 = spam haven)
414dnsbl.ahbl.org (result 127.0.0.4 = spam source)
369l1.spews.dnsbl.sorbs.net
330blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
329l2.spews.dnsbl.sorbs.net
328no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
289blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
224blackholes.uceb.org (result 127.0.0.3 = spam source)
213work.drbl.croco.net
177dnsbl.njabl.org (result 127.0.0.4 = spam source)
160sbl.csma.biz
142query.bondedsender.org (not a blacklist!)
114dnsbl.njabl.org (result 127.0.0.2 = open relay)
112dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
104multihop.dsbl.org
86relays.ordb.org
71blackholes.uceb.org (result 127.0.0.5 = dialup)
69flowgoaway.com
67spam.wytnij.to
60blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
55dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
48dnsbl.antispam.or.id
46ohps.dnsbl.net.au
44relays.nether.net
30tor.dnsbl.sectoor.de (union of all results)
29tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
28dnsbl.ahbl.org (result 127.0.0.15 = open relay)
26exemptions.ahbl.org (not a blacklist!)
23bl.deadbeef.com
21spamguard.leadmon.net (union of all results)
19multi.surbl.org
18spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
17osps.dnsbl.net.au
16blackholes.uceb.org (result 127.0.0.2 = open relay)
14rdts.dnsbl.net.au
13no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
12nigeria.blackholes.us
11dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
9blackholes.brainerd.net
8dnsbl.sorbs.net (result 127.0.0.5 = open relay)
6osrs.dnsbl.net.au
5owps.dnsbl.net.au
4dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
3spamguard.leadmon.net (result 127.0.0.3 = spam source)
3blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
2dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
1blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
1dnsbl.ahbl.org (result 127.0.0.18 = virus source)

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

HitsDNS Zone
161988(total number of IP addresses whose names were tested, including 505 at SDSC)
98078(union of all domain zones)
71654rddn.dnsbl.net.au
71346abuse.rfc-ignorant.org
51882dynamic.rhs.mailpolice.com
46424whois.rfc-ignorant.org (union of all results)
29915whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
16514whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4553webmail.rhs.mailpolice.com
859postmaster.rfc-ignorant.org
535adv.rhs.mailpolice.com
347multi.surbl.org
321rhsbl.ahbl.org
114bulk.rhs.mailpolice.com
104dsn.rfc-ignorant.org (zone not intended for this use)
100bogusmx.rfc-ignorant.org
5bl.deadbeef.com
4porn.rhs.mailpolice.com
2blackhole.securitysage.com
1ex.dnsbl.org

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

HitsDNS Zone
102655(total number of domains tested, including 425 at SDSC)
15971(union of all domain zones)
6458whois.rfc-ignorant.org (union of all results)
5676whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4588abuse.rfc-ignorant.org
2156multi.surbl.org
2059webmail.rhs.mailpolice.com
1816postmaster.rfc-ignorant.org
1362bogusmx.rfc-ignorant.org
1142dsn.rfc-ignorant.org
782whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
561rhsbl.ahbl.org
432porn.rhs.mailpolice.com
316bulk.rhs.mailpolice.com
252adv.rhs.mailpolice.com
202blackhole.securitysage.com
74rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
74rhsbl.sorbs.net (union of all results)
36rddn.dnsbl.net.au (zone not intended for this use)
20ex.dnsbl.org
17dynamic.rhs.mailpolice.com
2fraud.rhs.mailpolice.com
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 24 November 2006.