Blacklists Compared

9 December 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
169945(total number of IP addresses tested, including 577 at SDSC)
159516(union of most IP zones)
136530t1.dnsbl.net.au
106514sbl-xbl.spamhaus.org (union of all results)
106403zen.spamhaus.org (union of all results)
105948xbl.spamhaus.org (union of all results)
105012cbl.abuseat.org
104991xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
104988sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
104875zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
95961dnsbl.sorbs.net (union of all results)
90085block.blars.org
87505no-more-funn.moensted.dk (union of all results)
83210dnsbl.sorbs.net (result 127.0.0.10 = dialup)
80590psbl.surriel.com
80484blackholes.five-ten-sg.com (union of all results)
78827blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
68907dnsbl.tqmcube.com (union of all results)
61065no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
58320dynablock.njabl.org
50008dnsbl-1.uceprotect.net
40750dnsbl-2.uceprotect.net
37215dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
27227bl.spamcop.net
19649dnsbl-3.uceprotect.net
18499no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
16185dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
14965unconfirmed.dsbl.org
14801list.dsbl.org
14796dsbl.dnsbl.net.au
13869ubl.unsubscore.com
13448dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
13300bl.csma.biz
12998cn-kr.blackholes.us (result 127.0.0.2 = China)
12998cn-kr.blackholes.us (union of all results)
12432dnsbl.tqmcube.com (result 127.0.0.5 = China)
11521blacklist.spambag.org
9547wpbl.dnsbl.net.au
9462china.blackholes.us
8851dnsbl.njabl.org (union of all results)
8389korea.services.net
8112dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
7503no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
7392mail-abuse.blacklist.jippg.org
5477spews.dnsbl.net.au
5476dnsbl.njabl.org (result 127.0.0.9 = open proxy)
4932unsure.nether.net
4792tr.countries.nerd.dk
4265brazil.blackholes.us
3735korea.blackholes.us
3505dnsbl.sorbs.net (result 127.0.0.6 = spam source)
3485turkey.blackholes.us
3455spamsources.fabel.dk
3370dnsbl.ahbl.org (union of all results)
3333zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
3333xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
3333sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
3163dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
3106dnsbl.njabl.org (result 127.0.0.3 = dialup)
2878bl.spamcannibal.org
2709rmst.dnsbl.net.au
2657probes.dnsbl.net.au
1704taiwan.blackholes.us
1703russia.blackholes.us
1479dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1253japan.blackholes.us
994malaysia.blackholes.us
959blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
943dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
881argentina.blackholes.us
726zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
726sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
726sbl.spamhaus.org
628mexico.blackholes.us
587thailand.blackholes.us
520blackholes.uceb.org (union of all results)
505l1.spews.dnsbl.sorbs.net
430blackholes.uceb.org (result 127.0.0.6 = spam haven)
416no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
393l2.spews.dnsbl.sorbs.net
348blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
335no-more-funn.moensted.dk (result 127.0.0.9 = misc)
320hongkong.blackholes.us
290singapore.blackholes.us
276work.drbl.croco.net
275blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
233blackholes.uceb.org (result 127.0.0.3 = spam source)
222ricn.dnsbl.net.au
210sbl.csma.biz
161query.bondedsender.org (not a blacklist!)
143dnsbl.njabl.org (result 127.0.0.4 = spam source)
130dnsbl.njabl.org (result 127.0.0.2 = open relay)
108spam.wytnij.to
106multihop.dsbl.org
98dnsbl.ahbl.org (result 127.0.0.4 = spam source)
89dnsbl.antispam.or.id
77dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
77flowgoaway.com
68blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
66relays.ordb.org
64blackholes.uceb.org (result 127.0.0.5 = dialup)
60dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
49relays.nether.net
35ohps.dnsbl.net.au
34no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
28tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
28tor.dnsbl.sectoor.de (union of all results)
26multi.surbl.org
22dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
21exemptions.ahbl.org (not a blacklist!)
20dnsbl.ahbl.org (result 127.0.0.15 = open relay)
18osps.dnsbl.net.au
16nigeria.blackholes.us
16rdts.dnsbl.net.au
12blackholes.uceb.org (result 127.0.0.2 = open relay)
12bl.deadbeef.com
11dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
11spamguard.leadmon.net (union of all results)
10osrs.dnsbl.net.au
10blackholes.brainerd.net
8owps.dnsbl.net.au
8spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
5dnsbl.sorbs.net (result 127.0.0.5 = open relay)
3blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2spamsites.dnsbl.net.au
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
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)
1spamguard.leadmon.net (result 127.0.0.8 = open proxy)
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)
1blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
1blackholes.five-ten-sg.com (result 127.0.0.13 = challenge-response 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
169945(total number of IP addresses whose names were tested, including 577 at SDSC)
106365(union of all domain zones)
78538rddn.dnsbl.net.au
74162abuse.rfc-ignorant.org
55611dynamic.rhs.mailpolice.com
48894whois.rfc-ignorant.org (union of all results)
31211whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
17688whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4588webmail.rhs.mailpolice.com
899postmaster.rfc-ignorant.org
571adv.rhs.mailpolice.com
299rhsbl.ahbl.org
195multi.surbl.org
153bulk.rhs.mailpolice.com
119bl.deadbeef.com
112dsn.rfc-ignorant.org (zone not intended for this use)
110bogusmx.rfc-ignorant.org
11porn.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
92444(total number of domains tested, including 553 at SDSC)
17039(union of all domain zones)
7921whois.rfc-ignorant.org (union of all results)
7115whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4312abuse.rfc-ignorant.org
2200webmail.rhs.mailpolice.com
2021multi.surbl.org
1746postmaster.rfc-ignorant.org
1140bogusmx.rfc-ignorant.org
1023dsn.rfc-ignorant.org
806whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
667rhsbl.ahbl.org
449porn.rhs.mailpolice.com
244bulk.rhs.mailpolice.com
241adv.rhs.mailpolice.com
205blackhole.securitysage.com
70rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
70rhsbl.sorbs.net (union of all results)
36rddn.dnsbl.net.au (zone not intended for this use)
15ex.dnsbl.org
11dynamic.rhs.mailpolice.com
2fraud.rhs.mailpolice.com
1bl.deadbeef.com
1cart00ney.surriel.com

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