Blacklists Compared

28 July 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. Because it is too aggressive to be widely useful the l2.apews.dnsbl.uceprotect.net zone is also excluded.

HitsDNS Zone
167396(total number of IP addresses tested, including 493 at SDSC)
159070(union of most IP zones)
131895zen.spamhaus.org (union of all results)
131613l2.apews.dnsbl.uceprotect.net
128746t1.dnsbl.net.au
107051sbl-xbl.spamhaus.org (union of all results)
106289xbl.spamhaus.org (union of all results)
106118cbl.abuseat.org
106104xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
106102zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
106100sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
97218dnsbl.sorbs.net (union of all results)
94750pbl.spamhaus.org (union of all results)
94749dynablock.njabl.org
84360dnsbl.tqmcube.com (union of all results)
78726zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
78726pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
75660no-more-funn.moensted.dk (union of all results)
68141dnsbl.sorbs.net (result 127.0.0.10 = dialup)
66621blackholes.five-ten-sg.com (union of all results)
66001psbl.surriel.com
61154blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
57034no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
56072dnsbl-1.uceprotect.net
54679dnsbl-2.uceprotect.net
53129dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
37790dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
36902bl.spamcop.net
33506dnsbl-3.uceprotect.net
31444sbl.csma.biz
24753dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
21778db.wpbl.info
18013ubl.unsubscore.com
16910zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
16910pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
16097no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
15494ix.dnsbl.manitu.net
13924unconfirmed.dsbl.org
13809list.dsbl.org
13794dsbl.dnsbl.net.au
11342cn-kr.blackholes.us (result 127.0.0.2 = China)
11342cn-kr.blackholes.us (union of all results)
10558bl.csma.biz
10280tr.countries.nerd.dk
10078korea.services.net
9960turkey.blackholes.us
9844dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
9598mail-abuse.blacklist.jippg.org
8173dnsbl.tqmcube.com (result 127.0.0.5 = China)
5911korea.blackholes.us
5511china.blackholes.us
4471russia.blackholes.us
4409ips.backscatterer.org
4353combined-hib.dnsiplists.completewhois.com (union of all results)
4347combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
4285blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
3603bl.spamcannibal.org
3584dnsbl.njabl.org (union of all results)
3539rmst.dnsbl.net.au
3403list.dnswl.org (not a blacklist!)
3373dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2867brazil.blackholes.us
2443spamsources.fabel.dk
2420dnsbl.ahbl.org (union of all results)
2311dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1819no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1439probes.dnsbl.net.au
1174argentina.blackholes.us
1125taiwan.blackholes.us
1090japan.blackholes.us
1078blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1073zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1073xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1073sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
918zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
918sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
918sbl.spamhaus.org
869thailand.blackholes.us
801malaysia.blackholes.us
701mexico.blackholes.us
498blackholes.uceb.org (union of all results)
462no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
458blackholes.uceb.org (result 127.0.0.6 = spam haven)
456hongkong.blackholes.us
418no-more-funn.moensted.dk (result 127.0.0.9 = misc)
365dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
332dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
258work.drbl.croco.net
227singapore.blackholes.us
223blackholes.uceb.org (result 127.0.0.3 = spam source)
153query.bondedsender.org (not a blacklist!)
140dnsbl.njabl.org (result 127.0.0.4 = spam source)
135iadb2.isipp.com (not a blacklist!)
134accredit.habeas.com (not a blacklist!)
133iadb.isipp.com (not a blacklist!)
121bl.deadbeef.com
88spam.wytnij.to
82multihop.dsbl.org
71dnsbl.njabl.org (result 127.0.0.2 = open relay)
65blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
64ohps.dnsbl.net.au
51dnsbl.ahbl.org (result 127.0.0.4 = spam source)
39tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
39relays.nether.net
39tor.dnsbl.sectoor.de (union of all results)
35multi.surbl.org
31blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
30dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
29dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
18blackholes.uceb.org (result 127.0.0.5 = dialup)
18osps.dnsbl.net.au
16blackholes.brainerd.net
15nigeria.blackholes.us
13dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
12blackholes.uceb.org (result 127.0.0.2 = open relay)
12rdts.dnsbl.net.au
11exemptions.ahbl.org (not a blacklist!)
10dnsbl.ahbl.org (result 127.0.0.15 = open relay)
9multi.uribl.com (result 127.0.0.2 = spam resource)
9multi.uribl.com (union of all results)
7spamguard.leadmon.net (union of all results)
6combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
5spamguard.leadmon.net (result 127.0.0.3 = spam source)
4owps.dnsbl.net.au
4osrs.dnsbl.net.au
4blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
3blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
2spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
2dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
2dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1omrs.dnsbl.net.au
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
1no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
1dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
1dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam 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
167396(total number of IP addresses whose names were tested, including 493 at SDSC)
106367(union of all domain zones)
95609l1.apews.rhsbl.uceprotect.net
73364rddn.dnsbl.net.au
63974abuse.rfc-ignorant.org
41671dynamic.rhs.mailpolice.com
39502whois.rfc-ignorant.org (union of all results)
21938whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
17564whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
9816webmail.rhs.mailpolice.com
677multi.surbl.org
572multi.uribl.com (union of all results)
570multi.uribl.com (result 127.0.0.2 = spam resource)
487adv.rhs.mailpolice.com
113postmaster.rfc-ignorant.org
105rhsbl.ahbl.org
98bulk.rhs.mailpolice.com
82bogusmx.rfc-ignorant.org
80bl.deadbeef.com
79dsn.rfc-ignorant.org (zone not intended for this use)
37rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
37rhsbl.sorbs.net (union of all results)
14porn.rhs.mailpolice.com
3blackhole.securitysage.com
2multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
1fraud.rhs.mailpolice.com


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

HitsDNS Zone
102619(total number of domains tested, including 428 at SDSC)
24119(union of all domain zones)
10614whois.rfc-ignorant.org (union of all results)
9852whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
5309abuse.rfc-ignorant.org
3899multi.surbl.org
2578l1.apews.rhsbl.uceprotect.net
2389multi.uribl.com (union of all results)
2327multi.uribl.com (result 127.0.0.2 = spam resource)
2324postmaster.rfc-ignorant.org
2149bogusmx.rfc-ignorant.org
1891webmail.rhs.mailpolice.com
1056dsn.rfc-ignorant.org
762whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
436porn.rhs.mailpolice.com
261rhsbl.ahbl.org
206bulk.rhs.mailpolice.com
190adv.rhs.mailpolice.com
187blackhole.securitysage.com
104rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
104rhsbl.sorbs.net (union of all results)
60multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
56rddn.dnsbl.net.au (zone not intended for this use)
18dynamic.rhs.mailpolice.com
17ex.dnsbl.org
3bl.deadbeef.com
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1fraud.rhs.mailpolice.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 3 August 2007.