Blacklists Compared

11 August 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
201246(total number of IP addresses tested, including 492 at SDSC)
189786(union of most IP zones)
148931zen.spamhaus.org (union of all results)
144233t1.dnsbl.net.au
115688dnsbl.sorbs.net (union of all results)
113330pbl.spamhaus.org (union of all results)
113328dynablock.njabl.org
104748dnsbl.tqmcube.com (union of all results)
101698sbl-xbl.spamhaus.org (union of all results)
101044xbl.spamhaus.org (union of all results)
100877cbl.abuseat.org
100797sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
100795zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
100766xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
91536pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
91535zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
88165psbl.surriel.com
87225no-more-funn.moensted.dk (union of all results)
83804dnsbl.sorbs.net (result 127.0.0.10 = dialup)
80195dnsbl-1.uceprotect.net
77795blackholes.five-ten-sg.com (union of all results)
72577blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
69067l2.apews.dnsbl.uceprotect.net
67682dnsbl-2.uceprotect.net
67350dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
66965no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
43598bl.spamcop.net
39628dnsbl-3.uceprotect.net
38248dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
33965dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
30169ubl.unsubscore.com
30027db.wpbl.info
24241ix.dnsbl.manitu.net
22067zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
22067pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
17418no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
15736mail-abuse.blacklist.jippg.org
13868unconfirmed.dsbl.org
13716list.dsbl.org
13714dsbl.dnsbl.net.au
12534bl.csma.biz
11031tr.countries.nerd.dk
10840dnsbl.tqmcube.com (result 127.0.0.5 = China)
10470ips.backscatterer.org
10093sbl.csma.biz
9304korea.services.net
9123dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
7794turkey.blackholes.us
7317cn-kr.blackholes.us (result 127.0.0.2 = China)
7317cn-kr.blackholes.us (union of all results)
4409bl.spamcannibal.org
4241china.blackholes.us
4051blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
3941dnsbl.njabl.org (union of all results)
3907list.dnswl.org (not a blacklist!)
3715dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3634rmst.dnsbl.net.au
3193russia.blackholes.us
2939korea.blackholes.us
2938spamsources.fabel.dk
2646dnsbl.ahbl.org (union of all results)
2604combined-hib.dnsiplists.completewhois.com (union of all results)
2587combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
2509dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1853no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1835brazil.blackholes.us
1651probes.dnsbl.net.au
1096zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1096xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1096sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1056blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
979argentina.blackholes.us
818malaysia.blackholes.us
796thailand.blackholes.us
769zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
769sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
769sbl.spamhaus.org
698taiwan.blackholes.us
649no-more-funn.moensted.dk (result 127.0.0.9 = misc)
593aspews.ext.sorbs.net
537japan.blackholes.us
512no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
457blackholes.uceb.org (union of all results)
424mexico.blackholes.us
406blackholes.uceb.org (result 127.0.0.6 = spam haven)
402dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
334dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
295work.drbl.croco.net
226blackholes.uceb.org (result 127.0.0.3 = spam source)
158dnsbl.njabl.org (result 127.0.0.4 = spam source)
149iadb2.isipp.com (not a blacklist!)
147iadb.isipp.com (not a blacklist!)
139bl.deadbeef.com
138accredit.habeas.com (not a blacklist!)
138query.bondedsender.org (not a blacklist!)
132hongkong.blackholes.us
131singapore.blackholes.us
117spam.wytnij.to
111multihop.dsbl.org
70relays.nether.net
69dnsbl.ahbl.org (result 127.0.0.4 = spam source)
68dnsbl.njabl.org (result 127.0.0.2 = open relay)
60blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
55tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
55tor.dnsbl.sectoor.de (union of all results)
47dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
46dnsbl.sorbs.net (result 127.0.0.6 = spam source)
41ohps.dnsbl.net.au
38blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
36multi.surbl.org
35dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
35spamguard.leadmon.net (union of all results)
27spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
20blackholes.uceb.org (result 127.0.0.2 = open relay)
20rdts.dnsbl.net.au
19nigeria.blackholes.us
18blackholes.brainerd.net
18exemptions.ahbl.org (not a blacklist!)
17combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
15blackholes.uceb.org (result 127.0.0.5 = dialup)
11osps.dnsbl.net.au
10multi.uribl.com (result 127.0.0.2 = spam resource)
10multi.uribl.com (union of all results)
9dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
8blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
7spamguard.leadmon.net (result 127.0.0.3 = spam source)
7dnsbl.ahbl.org (result 127.0.0.15 = open relay)
3owps.dnsbl.net.au
3osrs.dnsbl.net.au
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2omrs.dnsbl.net.au
2no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
2blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
2dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
2dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
1spamguard.leadmon.net (result 127.0.0.8 = open proxy)
1no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
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)


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

HitsDNS Zone
201246(total number of IP addresses whose names were tested, including 492 at SDSC)
127202(union of all domain zones)
89557rddn.dnsbl.net.au
80651abuse.rfc-ignorant.org
58946l1.apews.rhsbl.uceprotect.net
49550dynamic.rhs.mailpolice.com
46493whois.rfc-ignorant.org (union of all results)
27245whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
19248whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
11284webmail.rhs.mailpolice.com
586multi.surbl.org
552multi.uribl.com (result 127.0.0.2 = spam resource)
552multi.uribl.com (union of all results)
489adv.rhs.mailpolice.com
124bulk.rhs.mailpolice.com
123postmaster.rfc-ignorant.org
109rhsbl.ahbl.org
85dsn.rfc-ignorant.org (zone not intended for this use)
78bl.deadbeef.com
75bogusmx.rfc-ignorant.org
44rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
44rhsbl.sorbs.net (union of all results)
25porn.rhs.mailpolice.com
5blackhole.securitysage.com
1fraud.rhs.mailpolice.com


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

HitsDNS Zone
152418(total number of domains tested, including 432 at SDSC)
31025(union of all domain zones)
18541whois.rfc-ignorant.org (union of all results)
17803whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
5707abuse.rfc-ignorant.org
3124multi.surbl.org
2385multi.uribl.com (union of all results)
2376postmaster.rfc-ignorant.org
2309multi.uribl.com (result 127.0.0.2 = spam resource)
2050webmail.rhs.mailpolice.com
1783bogusmx.rfc-ignorant.org
1133dsn.rfc-ignorant.org
738whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
553porn.rhs.mailpolice.com
335rhsbl.ahbl.org
319bulk.rhs.mailpolice.com
207blackhole.securitysage.com
196adv.rhs.mailpolice.com
109rddn.dnsbl.net.au (zone not intended for this use)
92rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
92rhsbl.sorbs.net (union of all results)
70dynamic.rhs.mailpolice.com
68multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
19ex.dnsbl.org
8multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
3bl.deadbeef.com
2fraud.rhs.mailpolice.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 17 August 2007.