Blacklists Compared

3 February 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 block.blars.org zone is also excluded.

HitsDNS Zone
143762(total number of IP addresses tested, including 505 at SDSC)
135467(union of most IP zones)
114432t1.dnsbl.net.au
105697zen.spamhaus.org (union of all results)
83917dnsbl.sorbs.net (union of all results)
83407sbl-xbl.spamhaus.org (union of all results)
82813xbl.spamhaus.org (union of all results)
82262cbl.abuseat.org
82246zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
82245sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
82242xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
74161no-more-funn.moensted.dk (union of all results)
70935block.blars.org
67715dnsbl.sorbs.net (result 127.0.0.10 = dialup)
67102blackholes.five-ten-sg.com (union of all results)
63435dnsbl.tqmcube.com (union of all results)
62559blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
60828psbl.surriel.com
58719dnsbl-1.uceprotect.net
57606pbl.spamhaus.org (union of all results)
57347dynablock.njabl.org
57187zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
57187pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
54650dnsbl-2.uceprotect.net
53233no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
42640dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
32269dnsbl-3.uceprotect.net
29191l2.apews.dnsbl.uceprotect.net
24646bl.spamcop.net
24205dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
19025wpbl.dnsbl.net.au
17498bl.csma.biz
13548dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
13028unconfirmed.dsbl.org
13012ubl.unsubscore.com
12963no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
12933list.dsbl.org
12928dsbl.dnsbl.net.au
11945cn-kr.blackholes.us (result 127.0.0.2 = China)
11945cn-kr.blackholes.us (union of all results)
7676no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
7544ix.dnsbl.manitu.net
7482blacklist.spambag.org
7220unsure.nether.net
7109dnsbl.tqmcube.com (result 127.0.0.5 = China)
6436dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
6404korea.services.net
6323china.blackholes.us
5622korea.blackholes.us
5616tr.countries.nerd.dk
5361turkey.blackholes.us
4841rmst.dnsbl.net.au
4568dnsbl.njabl.org (union of all results)
4226dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3817brazil.blackholes.us
3660mail-abuse.blacklist.jippg.org
3441blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2859dnsbl.ahbl.org (union of all results)
2751dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2688russia.blackholes.us
2636dnsbl.sorbs.net (result 127.0.0.6 = spam source)
2581bl.spamcannibal.org
2449zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
2449xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
2449sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
2123spamsources.fabel.dk
1986probes.dnsbl.net.au
1585taiwan.blackholes.us
1557japan.blackholes.us
1545list.dnswl.org (not a blacklist!)
1191argentina.blackholes.us
996dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
934blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
933zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
933pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
852dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
818thailand.blackholes.us
790zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
790sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
790sbl.spamhaus.org
689mexico.blackholes.us
660malaysia.blackholes.us
488blackholes.uceb.org (union of all results)
447blackholes.uceb.org (result 127.0.0.6 = spam haven)
321hongkong.blackholes.us
279no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
241singapore.blackholes.us
241blackholes.uceb.org (result 127.0.0.3 = spam source)
240no-more-funn.moensted.dk (result 127.0.0.9 = misc)
198work.drbl.croco.net
173dnsbl.njabl.org (result 127.0.0.2 = open relay)
148dnsbl.njabl.org (result 127.0.0.4 = spam source)
132iadb.isipp.com (not a blacklist!)
131query.bondedsender.org (not a blacklist!)
120blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
116dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
108accredit.habeas.com (not a blacklist!)
77bl.deadbeef.com
74flowgoaway.com
70multihop.dsbl.org
62spam.wytnij.to
57sbl.csma.biz
46dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
42blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
27blackholes.uceb.org (result 127.0.0.5 = dialup)
24tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
24tor.dnsbl.sectoor.de (union of all results)
22multi.surbl.org
22ohps.dnsbl.net.au
20dnsbl.njabl.org (result 127.0.0.3 = dialup)
19relays.nether.net
18dnsbl.ahbl.org (result 127.0.0.15 = open relay)
18dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
13rdts.dnsbl.net.au
13exemptions.ahbl.org (not a blacklist!)
12nigeria.blackholes.us
12dnsbl.ahbl.org (result 127.0.0.4 = spam source)
11dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
11spamguard.leadmon.net (union of all results)
10osps.dnsbl.net.au
9spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
6blackholes.uceb.org (result 127.0.0.2 = open relay)
4osrs.dnsbl.net.au
4blackholes.brainerd.net
2owps.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 127.0.0.8 = open web form)
2blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
2blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1spamsites.dnsbl.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
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)


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

HitsDNS Zone
143762(total number of IP addresses whose names were tested, including 505 at SDSC)
88785(union of all domain zones)
64949rddn.dnsbl.net.au
56473abuse.rfc-ignorant.org
44033dynamic.rhs.mailpolice.com
37241whois.rfc-ignorant.org (union of all results)
31618l1.apews.rhsbl.uceprotect.net
22361whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
14882whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
5057webmail.rhs.mailpolice.com
509adv.rhs.mailpolice.com
481postmaster.rfc-ignorant.org
319multi.surbl.org
264multi.uribl.com (union of all results)
263multi.uribl.com (result 127.0.0.2 = spam resource)
218rhsbl.ahbl.org
159bl.deadbeef.com
130bulk.rhs.mailpolice.com
92dsn.rfc-ignorant.org (zone not intended for this use)
92bogusmx.rfc-ignorant.org
5porn.rhs.mailpolice.com
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
77874(total number of domains tested, including 469 at SDSC)
16198(union of all domain zones)
7643whois.rfc-ignorant.org (union of all results)
6980whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3817abuse.rfc-ignorant.org
2152multi.surbl.org
1904webmail.rhs.mailpolice.com
1832multi.uribl.com (union of all results)
1797multi.uribl.com (result 127.0.0.2 = spam resource)
1483postmaster.rfc-ignorant.org
996bogusmx.rfc-ignorant.org
847dsn.rfc-ignorant.org
663whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
522rhsbl.ahbl.org
329porn.rhs.mailpolice.com
249bulk.rhs.mailpolice.com
214adv.rhs.mailpolice.com
146blackhole.securitysage.com
73rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
73rhsbl.sorbs.net (union of all results)
33multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
26rddn.dnsbl.net.au (zone not intended for this use)
22l1.apews.rhsbl.uceprotect.net
16ex.dnsbl.org
10dynamic.rhs.mailpolice.com
4fraud.rhs.mailpolice.com
3bl.deadbeef.com
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1cart00ney.surriel.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 8 February 2007.