Blacklists Compared

10 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
125289(total number of IP addresses tested, including 493 at SDSC)
117439(union of most IP zones)
97264t1.dnsbl.net.au
93468zen.spamhaus.org (union of all results)
70493sbl-xbl.spamhaus.org (union of all results)
69866xbl.spamhaus.org (union of all results)
69507zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
69502xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
69499cbl.abuseat.org
69498sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
67177no-more-funn.moensted.dk (union of all results)
65225dnsbl.sorbs.net (union of all results)
60985dnsbl.tqmcube.com (union of all results)
59137blackholes.five-ten-sg.com (union of all results)
58361pbl.spamhaus.org (union of all results)
58359dynablock.njabl.org
54739zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
54739pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
54626blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
53063dnsbl.sorbs.net (result 127.0.0.10 = dialup)
51364psbl.surriel.com
43611no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
36220dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
28714dnsbl-1.uceprotect.net
28367l2.apews.dnsbl.uceprotect.net
21710bl.spamcop.net
16169no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
15631dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
15149dnsbl-2.uceprotect.net
13499cn-kr.blackholes.us (result 127.0.0.2 = China)
13499cn-kr.blackholes.us (union of all results)
13224dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
12604wpbl.dnsbl.net.au
11479unconfirmed.dsbl.org
11394list.dsbl.org
11378dsbl.dnsbl.net.au
10213dnsbl.tqmcube.com (result 127.0.0.5 = China)
8698unsure.nether.net
8061ix.dnsbl.manitu.net
7842china.blackholes.us
7464korea.services.net
7419dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
7165no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
6230ubl.unsubscore.com
6059blacklist.spambag.org
5390korea.blackholes.us
5334mail-abuse.blacklist.jippg.org
5042tr.countries.nerd.dk
5022turkey.blackholes.us
4091rmst.dnsbl.net.au
3917dnsbl.njabl.org (union of all results)
3626zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
3626pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
3595dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3458dnsbl-3.uceprotect.net
3411blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
3344bl.csma.biz
2621spamsources.fabel.dk
2482brazil.blackholes.us
2479bl.spamcannibal.org
2425dnsbl.ahbl.org (union of all results)
2375dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2315dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1968russia.blackholes.us
1833zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1833xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1833sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1472list.dnswl.org (not a blacklist!)
1363probes.dnsbl.net.au
1172japan.blackholes.us
1005taiwan.blackholes.us
951blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
890thailand.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
741dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
665argentina.blackholes.us
624malaysia.blackholes.us
540blackholes.uceb.org (union of all results)
517dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
507blackholes.uceb.org (result 127.0.0.6 = spam haven)
447mexico.blackholes.us
437hongkong.blackholes.us
267singapore.blackholes.us
256blackholes.uceb.org (result 127.0.0.3 = spam source)
227no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
185query.bondedsender.org (not a blacklist!)
183no-more-funn.moensted.dk (result 127.0.0.9 = misc)
163dnsbl.njabl.org (result 127.0.0.2 = open relay)
155dnsbl.njabl.org (result 127.0.0.4 = spam source)
143work.drbl.croco.net
114iadb2.isipp.com (not a blacklist!)
113iadb.isipp.com (not a blacklist!)
113accredit.habeas.com (not a blacklist!)
99bl.deadbeef.com
93blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
82spam.wytnij.to
77flowgoaway.com
59multihop.dsbl.org
47blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
31dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
29dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
25blackholes.uceb.org (result 127.0.0.5 = dialup)
24ohps.dnsbl.net.au
24spamguard.leadmon.net (union of all results)
22spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
20dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
19tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
19multi.surbl.org
19rdts.dnsbl.net.au
19tor.dnsbl.sectoor.de (union of all results)
17relays.nether.net
15exemptions.ahbl.org (not a blacklist!)
10dnsbl.ahbl.org (result 127.0.0.15 = open relay)
9osrs.dnsbl.net.au
8owps.dnsbl.net.au
8osps.dnsbl.net.au
7blackholes.brainerd.net
4blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
3blackholes.uceb.org (result 127.0.0.2 = open relay)
3dnsbl.njabl.org (result 127.0.0.3 = dialup)
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 127.0.0.8 = open web form)
2blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
1multi.uribl.com (result 127.0.0.2 = spam resource)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1spamsites.dnsbl.net.au
1omrs.dnsbl.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
1multi.uribl.com (union of all results)


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

HitsDNS Zone
125289(total number of IP addresses whose names were tested, including 493 at SDSC)
70019(union of all domain zones)
49341rddn.dnsbl.net.au
44918abuse.rfc-ignorant.org
34164dynamic.rhs.mailpolice.com
32173l1.apews.rhsbl.uceprotect.net
25089whois.rfc-ignorant.org (union of all results)
13606whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
11484whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4001webmail.rhs.mailpolice.com
543postmaster.rfc-ignorant.org
497adv.rhs.mailpolice.com
438multi.surbl.org
257multi.uribl.com (union of all results)
255multi.uribl.com (result 127.0.0.2 = spam resource)
137bl.deadbeef.com
130rhsbl.ahbl.org
106bogusmx.rfc-ignorant.org
104dsn.rfc-ignorant.org (zone not intended for this use)
90bulk.rhs.mailpolice.com
13porn.rhs.mailpolice.com
2blackhole.securitysage.com
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1multi.uribl.com (result 127.0.0.4 = opt-out spam resource)


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

HitsDNS Zone
71140(total number of domains tested, including 486 at SDSC)
14182(union of all domain zones)
6115whois.rfc-ignorant.org (union of all results)
5511whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3974abuse.rfc-ignorant.org
1956multi.surbl.org
1720webmail.rhs.mailpolice.com
1435postmaster.rfc-ignorant.org
1420multi.uribl.com (union of all results)
1383multi.uribl.com (result 127.0.0.2 = spam resource)
958bogusmx.rfc-ignorant.org
770dsn.rfc-ignorant.org
604whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
302porn.rhs.mailpolice.com
265rhsbl.ahbl.org
224bulk.rhs.mailpolice.com
177adv.rhs.mailpolice.com
133blackhole.securitysage.com
72l1.apews.rhsbl.uceprotect.net
61rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
61rhsbl.sorbs.net (union of all results)
38rddn.dnsbl.net.au (zone not intended for this use)
33multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
15ex.dnsbl.org
13dynamic.rhs.mailpolice.com
7bl.deadbeef.com
5multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
5fraud.rhs.mailpolice.com
1cart00ney.surriel.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 15 March 2007.