Blacklists Compared

28 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 and 127.0.0.5 results), 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
68058(total number of IP addresses tested, including 216 at SDSC)
64610(union of most IP zones)
53997zen.spamhaus.org (union of all results)
51462l2.apews.org
49218t1.dnsbl.net.au
44560b.barracudacentral.org
43545cbl.abuseat.org
43460zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
33165zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
30345dnsbl-1.uceprotect.net
29952dnsbl-3.uceprotect.net
27555dnsbl-2.uceprotect.net
27122hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
25029ubl.unsubscore.com
23511dnsbl.sorbs.net (union of all results)
20550blackholes.five-ten-sg.com (union of all results)
17881no-more-funn.moensted.dk (union of all results)
17403blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
17283psbl.surriel.com
15856dnsbl.sorbs.net (result 127.0.0.10 = dialup)
11248no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
10840bl.spamcop.net
9917db.wpbl.info
9202zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
7626dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
7091spam.dnsbl.sorbs.net
6221ix.dnsbl.manitu.net
5870no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
4930countries.blackholes.us (result 127.1.5.6 = China)
3903bl.spamcannibal.org
3810list.dnswl.org (not a blacklist!)
3605dnsbl.inps.de
3321tr.countries.nerd.dk
2968spamsources.fabel.dk
2643ips.backscatterer.org
2611hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2221countries.blackholes.us (result 127.7.9.2 = Turkey)
2210korea.services.net
2131countries.blackholes.us (result 127.0.7.6 = Brazil)
2010countries.blackholes.us (result 127.6.4.3 = Russia)
1949blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
1898mail-abuse.blacklist.jippg.org
1871hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1704hostkarma.junkemailfilter.com (result 127.0.0.5 = do not reject)
1607countries.blackholes.us (result 127.4.1.0 = Korea)
1413countries.blackholes.us (result 127.7.6.4 = Thailand)
1245dnsbl.njabl.org (union of all results)
1165blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1029dnsbl.njabl.org (result 127.0.0.9 = open proxy)
938rmst.dnsbl.net.au
742countries.blackholes.us (result 127.0.3.2 = Argentina)
630aspews.ext.sorbs.net
593countries.blackholes.us (result 127.1.5.8 = Taiwan)
553no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
473zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
447countries.blackholes.us (result 127.4.8.4 = Mexico)
376countries.blackholes.us (result 127.3.9.2 = Japan)
351query.bondedsender.org (not a blacklist!)
212countries.blackholes.us (result 127.3.4.4 = Hong Kong)
196no-more-funn.moensted.dk (result 127.0.0.9 = misc)
194accredit.habeas.com (not a blacklist!)
192dnsbl.njabl.org (result 127.0.0.4 = spam source)
173dnsbl.sorbs.net (result 127.0.0.6 = spam source)
168iadb2.isipp.com (not a blacklist!)
133iadb.isipp.com (not a blacklist!)
123hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
121countries.blackholes.us (result 127.7.0.2 = Singapore)
102spamguard.leadmon.net (union of all results)
99spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
94dnsbl.ahbl.org (union of all results)
87countries.blackholes.us (result 127.4.5.8 = Malaysia)
76zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
73no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
47probes.dnsbl.net.au
47l2.bbfh.ext.sorbs.net
47dnsbl.ahbl.org (result 127.0.0.4 = spam source)
47dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
46bl.deadbeef.com
45ricn.dnsbl.net.au
43tor.dnsbl.sectoor.de (union of all results)
42tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
24dnsbl.njabl.org (result 127.0.0.2 = open relay)
22dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
18dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
18blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
15blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
9dnsbl-0.uceprotect.net
8countries.blackholes.us (result 127.5.6.6 = Nigeria)
5multi.surbl.org
3multi.uribl.com (result 127.0.0.2 = spam resource)
3dnsbl.sorbs.net (result 127.0.0.5 = open relay)
3rdts.dnsbl.net.au
3multi.uribl.com (union of all results)
2dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2blackholes.brainerd.net
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1spamguard.leadmon.net (result 127.0.0.8 = open proxy)
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
68058(total number of IP addresses whose names were tested, including 216 at SDSC)
35146(union of all domain zones)
25935l1.apews.org
24162abuse.rfc-ignorant.org
17997rddn.dnsbl.net.au
12155whois.rfc-ignorant.org (union of all results)
11750dynamic.rhs.mailpolice.com
7460whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4695whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
2547webmail.rhs.mailpolice.com
679adv.rhs.mailpolice.com
492rhsbl.ahbl.org
177multi.surbl.org
114multi.uribl.com (result 127.0.0.2 = spam resource)
114multi.uribl.com (union of all results)
65postmaster.rfc-ignorant.org
51dsn.rfc-ignorant.org (zone not intended for this use)
50bogusmx.rfc-ignorant.org
27bulk.rhs.mailpolice.com
26dob.sibl.support-intelligence.net
10rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
10rhsbl.sorbs.net (union of all results)
8bl.deadbeef.com
3porn.rhs.mailpolice.com


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

HitsDNS Zone
49537(total number of domains tested, including 173 at SDSC)
14631(union of all domain zones)
7291whois.rfc-ignorant.org (union of all results)
6853whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2698bogusmx.rfc-ignorant.org
2561abuse.rfc-ignorant.org
2146postmaster.rfc-ignorant.org
1279l1.apews.org
877multi.surbl.org
862multi.uribl.com (union of all results)
832multi.uribl.com (result 127.0.0.2 = spam resource)
796webmail.rhs.mailpolice.com
438whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
416dsn.rfc-ignorant.org
270adv.rhs.mailpolice.com
190bulk.rhs.mailpolice.com
170porn.rhs.mailpolice.com
123rhsbl.ahbl.org
35rddn.dnsbl.net.au (zone not intended for this use)
30rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
30rhsbl.sorbs.net (union of all results)
28multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
15ex.dnsbl.org
14dynamic.rhs.mailpolice.com
12dob.sibl.support-intelligence.net
3fraud.rhs.mailpolice.com
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1bl.deadbeef.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 5 March 2009.