Blacklists Compared

14 February 2009

[ 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
57504(total number of IP addresses tested, including 199 at SDSC)
53624(union of most IP zones)
43307zen.spamhaus.org (union of all results)
42623l2.apews.org
38943t1.dnsbl.net.au
36477b.barracudacentral.org
34785cbl.abuseat.org
34752zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
27383zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
24572dnsbl-3.uceprotect.net
22566dnsbl-1.uceprotect.net
21410hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
21319dnsbl-2.uceprotect.net
17560dnsbl.sorbs.net (union of all results)
16961blackholes.five-ten-sg.com (union of all results)
15233no-more-funn.moensted.dk (union of all results)
15221ubl.unsubscore.com
13729blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
11853dnsbl.sorbs.net (result 127.0.0.10 = dialup)
8824no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
8531db.wpbl.info
8155bl.spamcop.net
6637spam.dnsbl.sorbs.net
6573zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
5622dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
5505no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5434ix.dnsbl.manitu.net
4411countries.blackholes.us (result 127.1.5.6 = China)
4117dnsbl.inps.de
3805list.dnswl.org (not a blacklist!)
3592bl.spamcannibal.org
2977spamsources.fabel.dk
2700hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2396tr.countries.nerd.dk
2267countries.blackholes.us (result 127.0.7.6 = Brazil)
2212korea.services.net
2089blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2067psbl.surriel.com
1822hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1743countries.blackholes.us (result 127.6.4.3 = Russia)
1734ips.backscatterer.org
1620countries.blackholes.us (result 127.4.1.0 = Korea)
1588countries.blackholes.us (result 127.7.9.2 = Turkey)
1167mail-abuse.blacklist.jippg.org
1163countries.blackholes.us (result 127.7.6.4 = Thailand)
1160dnsbl.njabl.org (union of all results)
1111blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
895dnsbl.njabl.org (result 127.0.0.9 = open proxy)
716aspews.ext.sorbs.net
710no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
625rmst.dnsbl.net.au
529countries.blackholes.us (result 127.0.3.2 = Argentina)
468countries.blackholes.us (result 127.1.5.8 = Taiwan)
333countries.blackholes.us (result 127.3.9.2 = Japan)
330query.bondedsender.org (not a blacklist!)
258countries.blackholes.us (result 127.4.8.4 = Mexico)
258hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
239dnsbl.njabl.org (result 127.0.0.4 = spam source)
209accredit.habeas.com (not a blacklist!)
198zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
186countries.blackholes.us (result 127.3.4.4 = Hong Kong)
178dnsbl.ahbl.org (union of all results)
167no-more-funn.moensted.dk (result 127.0.0.9 = misc)
142iadb2.isipp.com (not a blacklist!)
141dnsbl.ahbl.org (result 127.0.0.4 = spam source)
138dnsbl.sorbs.net (result 127.0.0.6 = spam source)
103iadb.isipp.com (not a blacklist!)
101countries.blackholes.us (result 127.7.0.2 = Singapore)
91countries.blackholes.us (result 127.4.5.8 = Malaysia)
76zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
60no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
52l2.bbfh.ext.sorbs.net
44bl.deadbeef.com
37dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
34tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
34tor.dnsbl.sectoor.de (union of all results)
32probes.dnsbl.net.au
26dnsbl.njabl.org (result 127.0.0.2 = open relay)
19dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
18dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
17blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
14dnsbl-0.uceprotect.net
14blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
10multi.surbl.org
6dnsbl.sorbs.net (result 127.0.0.5 = open relay)
5multi.uribl.com (result 127.0.0.2 = spam resource)
5rdts.dnsbl.net.au
5multi.uribl.com (union of all results)
4spamguard.leadmon.net (union of all results)
3countries.blackholes.us (result 127.5.6.6 = Nigeria)
2spamguard.leadmon.net (result 127.0.0.8 = open proxy)
2blackholes.brainerd.net
1dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
1spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1dob.sibl.support-intelligence.net


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

HitsDNS Zone
57504(total number of IP addresses whose names were tested, including 199 at SDSC)
28459(union of all domain zones)
20691l1.apews.org
19601abuse.rfc-ignorant.org
12758rddn.dnsbl.net.au
9684whois.rfc-ignorant.org (union of all results)
9283dynamic.rhs.mailpolice.com
5518whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4166whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
2075webmail.rhs.mailpolice.com
677adv.rhs.mailpolice.com
449rhsbl.ahbl.org
175multi.surbl.org
124multi.uribl.com (result 127.0.0.2 = spam resource)
124multi.uribl.com (union of all results)
51postmaster.rfc-ignorant.org
41bulk.rhs.mailpolice.com
40dsn.rfc-ignorant.org (zone not intended for this use)
39bogusmx.rfc-ignorant.org
26dob.sibl.support-intelligence.net
7bl.deadbeef.com
6porn.rhs.mailpolice.com
5rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
5rhsbl.sorbs.net (union of all results)


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

HitsDNS Zone
36822(total number of domains tested, including 156 at SDSC)
12135(union of all domain zones)
6253whois.rfc-ignorant.org (union of all results)
5816whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2273abuse.rfc-ignorant.org
1581bogusmx.rfc-ignorant.org
1372postmaster.rfc-ignorant.org
1117multi.surbl.org
1103l1.apews.org
1051multi.uribl.com (union of all results)
1016multi.uribl.com (result 127.0.0.2 = spam resource)
690webmail.rhs.mailpolice.com
437whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
357dsn.rfc-ignorant.org
265adv.rhs.mailpolice.com
175rhsbl.ahbl.org
111porn.rhs.mailpolice.com
98bulk.rhs.mailpolice.com
33rddn.dnsbl.net.au (zone not intended for this use)
31multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
31rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
31rhsbl.sorbs.net (union of all results)
13ex.dnsbl.org
10dynamic.rhs.mailpolice.com
9dob.sibl.support-intelligence.net
4multi.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 20 February 2009.