Blacklists Compared

31 March 2007

[ 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, query.bondedsender.org, list.dnswl.org, accredit.habeas.com, iadb.isipp.com, and iadb2.isipp.com zones because they are not blacklists.

HitsDNS Zone
133454(total number of IP addresses tested, including 583 at SDSC)
125295(union of most IP zones)
103565t1.dnsbl.net.au
101411zen.spamhaus.org (union of all results)
77323sbl-xbl.spamhaus.org (union of all results)
77314dnsbl.sorbs.net (union of all results)
76703xbl.spamhaus.org (union of all results)
76289cbl.abuseat.org
76284sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
76282xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
76276zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
73821no-more-funn.moensted.dk (union of all results)
67596dnsbl.tqmcube.com (union of all results)
65574dynablock.njabl.org
65574pbl.spamhaus.org (union of all results)
61975blackholes.five-ten-sg.com (union of all results)
59622zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
59622pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
59583dnsbl.sorbs.net (result 127.0.0.10 = dialup)
57126blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
49615no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
44986psbl.surriel.com
42083dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
35998dnsbl-1.uceprotect.net
25901dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
21988dnsbl-2.uceprotect.net
20675bl.spamcop.net
16334no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
15533dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
14194cn-kr.blackholes.us (result 127.0.0.2 = China)
14194cn-kr.blackholes.us (union of all results)
12092unconfirmed.dsbl.org
12004list.dsbl.org
11999dsbl.dnsbl.net.au
10314dnsbl.tqmcube.com (result 127.0.0.5 = China)
8814dnsbl-3.uceprotect.net
8555china.blackholes.us
8019mail-abuse.blacklist.jippg.org
7952ix.dnsbl.manitu.net
7719no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
7321korea.services.net
7286sbl.csma.biz
7256dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
7218ubl.unsubscore.com
6448unsure.nether.net
6106blacklist.spambag.org
5985combined-hib.dnsiplists.completewhois.com (union of all results)
5967combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
5953zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
5953pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
5600korea.blackholes.us
5063tr.countries.nerd.dk
4302turkey.blackholes.us
4022dnsbl.njabl.org (union of all results)
3878rmst.dnsbl.net.au
3674blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
3673dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2929brazil.blackholes.us
2621spamsources.fabel.dk
2606bl.spamcannibal.org
2590dnsbl.sorbs.net (result 127.0.0.6 = spam source)
2537dnsbl.ahbl.org (union of all results)
2452russia.blackholes.us
2414dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1855sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1854zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1854xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1512list.dnswl.org (not a blacklist!)
1222japan.blackholes.us
1108taiwan.blackholes.us
1071probes.dnsbl.net.au
1031blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
812argentina.blackholes.us
782zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
782sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
782sbl.spamhaus.org
764dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
759malaysia.blackholes.us
750thailand.blackholes.us
529dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
450mexico.blackholes.us
386blackholes.uceb.org (union of all results)
340blackholes.uceb.org (result 127.0.0.6 = spam haven)
333hongkong.blackholes.us
298bl.csma.biz
276l2.apews.dnsbl.uceprotect.net
271no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
241singapore.blackholes.us
233no-more-funn.moensted.dk (result 127.0.0.9 = misc)
196dnsbl.njabl.org (result 127.0.0.4 = spam source)
190work.drbl.croco.net
184blackholes.uceb.org (result 127.0.0.3 = spam source)
164query.bondedsender.org (not a blacklist!)
152dnsbl.njabl.org (result 127.0.0.2 = open relay)
121iadb2.isipp.com (not a blacklist!)
121iadb.isipp.com (not a blacklist!)
117accredit.habeas.com (not a blacklist!)
114bl.deadbeef.com
86blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
82flowgoaway.com
73spam.wytnij.to
67dnsbl.ahbl.org (result 127.0.0.4 = spam source)
66multihop.dsbl.org
54blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
46dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
42dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
33blackholes.uceb.org (result 127.0.0.5 = dialup)
25ohps.dnsbl.net.au
21tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
21tor.dnsbl.sectoor.de (union of all results)
18combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
15relays.nether.net
13osps.dnsbl.net.au
13rdts.dnsbl.net.au
12multi.surbl.org
12dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
11nigeria.blackholes.us
11osrs.dnsbl.net.au
11exemptions.ahbl.org (not a blacklist!)
9spamguard.leadmon.net (union of all results)
7spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
7dnsbl.ahbl.org (result 127.0.0.15 = open relay)
4blackholes.uceb.org (result 127.0.0.2 = open relay)
3blackholes.brainerd.net
2multi.uribl.com (result 127.0.0.2 = spam resource)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
2multi.uribl.com (union of all results)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1owps.dnsbl.net.au
1omrs.dnsbl.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)


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

HitsDNS Zone
133454(total number of IP addresses whose names were tested, including 583 at SDSC)
78241(union of all domain zones)
54457rddn.dnsbl.net.au
51124abuse.rfc-ignorant.org
44548l1.apews.rhsbl.uceprotect.net
38194dynamic.rhs.mailpolice.com
26455whois.rfc-ignorant.org (union of all results)
14119whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
12336whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4243webmail.rhs.mailpolice.com
523adv.rhs.mailpolice.com
504postmaster.rfc-ignorant.org
369multi.surbl.org
276multi.uribl.com (union of all results)
273multi.uribl.com (result 127.0.0.2 = spam resource)
144bl.deadbeef.com
135rhsbl.ahbl.org
97bulk.rhs.mailpolice.com
66bogusmx.rfc-ignorant.org
63rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
63rhsbl.sorbs.net (union of all results)
62dsn.rfc-ignorant.org (zone not intended for this use)
6porn.rhs.mailpolice.com
2multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1blackhole.securitysage.com


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

HitsDNS Zone
76035(total number of domains tested, including 584 at SDSC)
14456(union of all domain zones)
5683whois.rfc-ignorant.org (union of all results)
5096whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3859abuse.rfc-ignorant.org
2165multi.surbl.org
1737postmaster.rfc-ignorant.org
1680multi.uribl.com (union of all results)
1623multi.uribl.com (result 127.0.0.2 = spam resource)
1461webmail.rhs.mailpolice.com
1103bogusmx.rfc-ignorant.org
844dsn.rfc-ignorant.org
587whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
382porn.rhs.mailpolice.com
333l1.apews.rhsbl.uceprotect.net
311rhsbl.ahbl.org
213bulk.rhs.mailpolice.com
201adv.rhs.mailpolice.com
173blackhole.securitysage.com
89rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
89rhsbl.sorbs.net (union of all results)
50multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
45rddn.dnsbl.net.au (zone not intended for this use)
16ex.dnsbl.org
12dynamic.rhs.mailpolice.com
7multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
3bl.deadbeef.com
2fraud.rhs.mailpolice.com
1cart00ney.surriel.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 5 April 2007.