Blacklists Compared

3 May 2008

[ 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 hostkarma.junkemailfilter.com (127.0.0.1 result), 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.org zone is also excluded from the union.

HitsDNS Zone
215366(total number of IP addresses tested, including 489 at SDSC)
200815(union of most IP zones)
163215l2.apews.org
161056zen.spamhaus.org (union of all results)
138334t1.dnsbl.net.au
104419zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
95535dnsbl-2.uceprotect.net
93063dnsbl-3.uceprotect.net
91810cbl.abuseat.org
91780zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
90951dnsbl-1.uceprotect.net
76938dnsbl.sorbs.net (union of all results)
76015hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
74928no-more-funn.moensted.dk (union of all results)
74025psbl.surriel.com
71310blackholes.five-ten-sg.com (union of all results)
67297dnsbl.sorbs.net (result 127.0.0.10 = dialup)
65751blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
51677no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
34704bl.spamcop.net
31966ix.dnsbl.manitu.net
30682ubl.unsubscore.com
30228zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
23480db.wpbl.info
23335sbl.csma.biz
23151bl.csma.biz
21260no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
18444countries.blackholes.us (result 127.1.5.6 = China)
15298ips.backscatterer.org
14147unconfirmed.dsbl.org
14013list.dsbl.org
14007dsbl.dnsbl.net.au
12251bl.spamcannibal.org
11963tr.countries.nerd.dk
9349countries.blackholes.us (result 127.7.9.2 = Turkey)
9211dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
8952countries.blackholes.us (result 127.0.7.6 = Brazil)
8864mail-abuse.blacklist.jippg.org
8433countries.blackholes.us (result 127.6.4.3 = Russia)
7102hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
6234korea.services.net
5468list.dnswl.org (not a blacklist!)
5332countries.blackholes.us (result 127.4.1.0 = Korea)
4523dnsbl.njabl.org (union of all results)
4338blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4293rmst.dnsbl.net.au
4205dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3868spamsources.fabel.dk
3562countries.blackholes.us (result 127.0.3.2 = Argentina)
3108countries.blackholes.us (result 127.3.9.2 = Japan)
2989hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2989dnsbl.ahbl.org (union of all results)
2693dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2026countries.blackholes.us (result 127.7.6.4 = Thailand)
1794countries.blackholes.us (result 127.4.8.4 = Mexico)
1556hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
1460no-more-funn.moensted.dk (result 127.0.0.9 = misc)
1436aspews.ext.sorbs.net
1164blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1012zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
878countries.blackholes.us (result 127.1.5.8 = Taiwan)
591countries.blackholes.us (result 127.3.4.4 = Hong Kong)
559countries.blackholes.us (result 127.4.5.8 = Malaysia)
543zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
517no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
402dnsbl.sorbs.net (result 127.0.0.6 = spam source)
389probes.dnsbl.net.au
356countries.blackholes.us (result 127.7.0.2 = Singapore)
345no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
276query.bondedsender.org (not a blacklist!)
265dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
230work.drbl.croco.net
229dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
223dnsbl.njabl.org (result 127.0.0.4 = spam source)
202bl.deadbeef.com
200accredit.habeas.com (not a blacklist!)
194tor.dnsbl.sectoor.de (union of all results)
193tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
157dnsbl.ahbl.org (result 127.0.0.4 = spam source)
155iadb2.isipp.com (not a blacklist!)
143iadb.isipp.com (not a blacklist!)
134multihop.dsbl.org
115dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
108relays.nether.net
94dnsbl.njabl.org (result 127.0.0.2 = open relay)
84multi.surbl.org
77dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
73exemptions.ahbl.org (not a blacklist!)
37countries.blackholes.us (result 127.5.6.6 = Nigeria)
35dnsbl.ahbl.org (result 127.0.0.15 = open relay)
34spamguard.leadmon.net (union of all results)
28blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
25rdts.dnsbl.net.au
25blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
24spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
20dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
11multi.uribl.com (union of all results)
10multi.uribl.com (result 127.0.0.2 = spam resource)
10blackholes.brainerd.net
8spam.wytnij.to
7ohps.dnsbl.net.au
7spamguard.leadmon.net (result 127.0.0.8 = open proxy)
7dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
3spamguard.leadmon.net (result 127.0.0.3 = spam source)
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2spamsites.dnsbl.net.au
2osrs.dnsbl.net.au
2no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
2blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
2dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
2dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1osps.dnsbl.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1dob.sibl.support-intelligence.net
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)


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

HitsDNS Zone
215366(total number of IP addresses whose names were tested, including 489 at SDSC)
120536(union of all domain zones)
94971l1.apews.org
82894abuse.rfc-ignorant.org
71118rddn.dnsbl.net.au
45903whois.rfc-ignorant.org (union of all results)
45235dynamic.rhs.mailpolice.com
30793whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
15110whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
7918webmail.rhs.mailpolice.com
645multi.surbl.org
594adv.rhs.mailpolice.com
492multi.uribl.com (union of all results)
490multi.uribl.com (result 127.0.0.2 = spam resource)
240bulk.rhs.mailpolice.com
163bl.deadbeef.com
160bogusmx.rfc-ignorant.org
120postmaster.rfc-ignorant.org
109rhsbl.ahbl.org
73dsn.rfc-ignorant.org (zone not intended for this use)
39rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
39rhsbl.sorbs.net (union of all results)
26dob.sibl.support-intelligence.net
25porn.rhs.mailpolice.com
2multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
2blackhole.securitysage.com
2ex.dnsbl.org


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

HitsDNS Zone
147020(total number of domains tested, including 441 at SDSC)
36962(union of all domain zones)
21303whois.rfc-ignorant.org (union of all results)
20592whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
6931bogusmx.rfc-ignorant.org
4918abuse.rfc-ignorant.org
2122postmaster.rfc-ignorant.org
1977multi.surbl.org
1767l1.apews.org
1630multi.uribl.com (union of all results)
1574multi.uribl.com (result 127.0.0.2 = spam resource)
1206webmail.rhs.mailpolice.com
1035dsn.rfc-ignorant.org
711whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
606porn.rhs.mailpolice.com
245adv.rhs.mailpolice.com
208bulk.rhs.mailpolice.com
196rhsbl.ahbl.org
172blackhole.securitysage.com
110rddn.dnsbl.net.au (zone not intended for this use)
96dynamic.rhs.mailpolice.com
59rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
59rhsbl.sorbs.net (union of all results)
56multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
28dob.sibl.support-intelligence.net
13ex.dnsbl.org
4bl.deadbeef.com
2fraud.rhs.mailpolice.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 9 May 2008.