Blacklists Compared

24 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
159479(total number of IP addresses tested, including 500 at SDSC)
150327(union of most IP zones)
123220t1.dnsbl.net.au
120047zen.spamhaus.org (union of all results)
92993dnsbl.sorbs.net (union of all results)
89103no-more-funn.moensted.dk (union of all results)
86518sbl-xbl.spamhaus.org (union of all results)
85888xbl.spamhaus.org (union of all results)
85330cbl.abuseat.org
85297sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
85292xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
85288zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
81936dnsbl.tqmcube.com (union of all results)
79298pbl.spamhaus.org (union of all results)
79297dynablock.njabl.org
74383dnsbl.sorbs.net (result 127.0.0.10 = dialup)
73689blackholes.five-ten-sg.com (union of all results)
71291zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
71291pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
68845blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
62326no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
61207psbl.surriel.com
52173dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
34494dnsbl-1.uceprotect.net
28944l2.apews.dnsbl.uceprotect.net
26506dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
24601bl.spamcop.net
18878dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
18555no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
15053cn-kr.blackholes.us (result 127.0.0.2 = China)
15053cn-kr.blackholes.us (union of all results)
14172unconfirmed.dsbl.org
14066list.dsbl.org
14053dsbl.dnsbl.net.au
12909dnsbl-2.uceprotect.net
11499sbl.csma.biz
11388dnsbl.tqmcube.com (result 127.0.0.5 = China)
9427china.blackholes.us
9094ix.dnsbl.manitu.net
8900korea.services.net
8845dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
8652mail-abuse.blacklist.jippg.org
8145unsure.nether.net
8010zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
8010pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
7938no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
7592combined-hib.dnsiplists.completewhois.com (union of all results)
7241blacklist.spambag.org
7017combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
6821ubl.unsubscore.com
6151tr.countries.nerd.dk
6090turkey.blackholes.us
5855korea.blackholes.us
4610rmst.dnsbl.net.au
4443dnsbl.njabl.org (union of all results)
4047dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3715blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
3151spamsources.fabel.dk
3086brazil.blackholes.us
2966dnsbl.sorbs.net (result 127.0.0.6 = spam source)
2901dnsbl.ahbl.org (union of all results)
2812bl.spamcannibal.org
2713dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2448russia.blackholes.us
1989zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1989xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1989sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1661dnsbl-3.uceprotect.net
1585list.dnswl.org (not a blacklist!)
1375probes.dnsbl.net.au
1357japan.blackholes.us
1167taiwan.blackholes.us
988blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
839thailand.blackholes.us
803dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
790argentina.blackholes.us
783malaysia.blackholes.us
758zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
758sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
758sbl.spamhaus.org
613dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
583combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
472mexico.blackholes.us
401bl.csma.biz
380blackholes.uceb.org (union of all results)
347hongkong.blackholes.us
331blackholes.uceb.org (result 127.0.0.6 = spam haven)
328no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
298no-more-funn.moensted.dk (result 127.0.0.9 = misc)
250singapore.blackholes.us
207dnsbl.njabl.org (result 127.0.0.4 = spam source)
198work.drbl.croco.net
189dnsbl.njabl.org (result 127.0.0.2 = open relay)
169blackholes.uceb.org (result 127.0.0.3 = spam source)
163query.bondedsender.org (not a blacklist!)
135bl.deadbeef.com
131iadb2.isipp.com (not a blacklist!)
131iadb.isipp.com (not a blacklist!)
120accredit.habeas.com (not a blacklist!)
111dnsbl.ahbl.org (result 127.0.0.4 = spam source)
94blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
87spam.wytnij.to
86flowgoaway.com
69multihop.dsbl.org
44dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
42blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
41dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
33tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
33tor.dnsbl.sectoor.de (union of all results)
32blackholes.uceb.org (result 127.0.0.5 = dialup)
30relays.nether.net
27ohps.dnsbl.net.au
24spamguard.leadmon.net (union of all results)
23dnsbl.ahbl.org (result 127.0.0.15 = open relay)
22nigeria.blackholes.us
22spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
15multi.surbl.org
15osps.dnsbl.net.au
13exemptions.ahbl.org (not a blacklist!)
12osrs.dnsbl.net.au
12dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
11rdts.dnsbl.net.au
8owps.dnsbl.net.au
6blackholes.uceb.org (result 127.0.0.2 = open relay)
6blackholes.brainerd.net
3dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2multi.uribl.com (result 127.0.0.2 = spam resource)
2omrs.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)
2blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
2dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
2multi.uribl.com (union of all results)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1spamsites.dnsbl.net.au
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 127.0.0.10 = shoot on sight spammer)


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

HitsDNS Zone
159479(total number of IP addresses whose names were tested, including 500 at SDSC)
95657(union of all domain zones)
69719rddn.dnsbl.net.au
57435abuse.rfc-ignorant.org
50971l1.apews.rhsbl.uceprotect.net
47009dynamic.rhs.mailpolice.com
31402whois.rfc-ignorant.org (union of all results)
17222whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
14180whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4644webmail.rhs.mailpolice.com
570postmaster.rfc-ignorant.org
505adv.rhs.mailpolice.com
429multi.surbl.org
252multi.uribl.com (union of all results)
251multi.uribl.com (result 127.0.0.2 = spam resource)
146bl.deadbeef.com
146rhsbl.ahbl.org
115bulk.rhs.mailpolice.com
83bogusmx.rfc-ignorant.org
80dsn.rfc-ignorant.org (zone not intended for this use)
64rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
64rhsbl.sorbs.net (union of all results)
7porn.rhs.mailpolice.com
2blackhole.securitysage.com
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1fraud.rhs.mailpolice.com


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

HitsDNS Zone
93866(total number of domains tested, including 477 at SDSC)
16097(union of all domain zones)
6575whois.rfc-ignorant.org (union of all results)
5941whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4054abuse.rfc-ignorant.org
2355multi.surbl.org
1737postmaster.rfc-ignorant.org
1670multi.uribl.com (union of all results)
1609multi.uribl.com (result 127.0.0.2 = spam resource)
1561webmail.rhs.mailpolice.com
1086bogusmx.rfc-ignorant.org
871dsn.rfc-ignorant.org
634whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
478porn.rhs.mailpolice.com
360rhsbl.ahbl.org
293bulk.rhs.mailpolice.com
285l1.apews.rhsbl.uceprotect.net
210adv.rhs.mailpolice.com
184blackhole.securitysage.com
84rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
84rhsbl.sorbs.net (union of all results)
57multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
51rddn.dnsbl.net.au (zone not intended for this use)
21dynamic.rhs.mailpolice.com
15ex.dnsbl.org
4multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
4bl.deadbeef.com
3fraud.rhs.mailpolice.com
1cart00ney.surriel.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 30 March 2007.