Blacklists Compared

31 January 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
67639(total number of IP addresses tested, including 197 at SDSC)
63161(union of most IP zones)
50735zen.spamhaus.org (union of all results)
50518l2.apews.org
46158t1.dnsbl.net.au
42824b.barracudacentral.org
41250cbl.abuseat.org
41204zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
31822zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
30286dnsbl-3.uceprotect.net
27746dnsbl-1.uceprotect.net
26421dnsbl-2.uceprotect.net
25268hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
21739dnsbl.sorbs.net (union of all results)
19361ubl.unsubscore.com
17919no-more-funn.moensted.dk (union of all results)
17694blackholes.five-ten-sg.com (union of all results)
15658psbl.surriel.com
14406blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
14154dnsbl.sorbs.net (result 127.0.0.10 = dialup)
11330db.wpbl.info
10588no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
9991bl.spamcop.net
8098zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
7503dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
7384spam.dnsbl.sorbs.net
7316ix.dnsbl.manitu.net
5775no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
4435bl.spamcannibal.org
4330countries.blackholes.us (result 127.1.5.6 = China)
4231dnsbl.inps.de
3919list.dnswl.org (not a blacklist!)
3041ips.backscatterer.org
2955tr.countries.nerd.dk
2921korea.services.net
2834countries.blackholes.us (result 127.0.7.6 = Brazil)
2756hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2553hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
2222countries.blackholes.us (result 127.4.1.0 = Korea)
2165blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2074countries.blackholes.us (result 127.6.4.3 = Russia)
2039countries.blackholes.us (result 127.7.9.2 = Turkey)
1912spamsources.fabel.dk
1286no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1175mail-abuse.blacklist.jippg.org
1158dnsbl.njabl.org (union of all results)
1113countries.blackholes.us (result 127.7.6.4 = Thailand)
1097blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
920dnsbl.njabl.org (result 127.0.0.9 = open proxy)
860rmst.dnsbl.net.au
801aspews.ext.sorbs.net
674countries.blackholes.us (result 127.1.5.8 = Taiwan)
589countries.blackholes.us (result 127.0.3.2 = Argentina)
525countries.blackholes.us (result 127.3.9.2 = Japan)
329query.bondedsender.org (not a blacklist!)
318countries.blackholes.us (result 127.4.8.4 = Mexico)
266zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
225hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
210no-more-funn.moensted.dk (result 127.0.0.9 = misc)
205dnsbl.njabl.org (result 127.0.0.4 = spam source)
200countries.blackholes.us (result 127.3.4.4 = Hong Kong)
191accredit.habeas.com (not a blacklist!)
176dnsbl.sorbs.net (result 127.0.0.6 = spam source)
153iadb2.isipp.com (not a blacklist!)
128countries.blackholes.us (result 127.7.0.2 = Singapore)
125dnsbl.ahbl.org (union of all results)
114iadb.isipp.com (not a blacklist!)
114no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
90dnsbl.ahbl.org (result 127.0.0.4 = spam source)
83zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
77countries.blackholes.us (result 127.4.5.8 = Malaysia)
59bl.deadbeef.com
49tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
49tor.dnsbl.sectoor.de (union of all results)
42probes.dnsbl.net.au
41l2.bbfh.ext.sorbs.net
35dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
33dnsbl.njabl.org (result 127.0.0.2 = open relay)
17dnsbl-0.uceprotect.net
14blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
13countries.blackholes.us (result 127.5.6.6 = Nigeria)
13multi.surbl.org
12blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
8dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
8dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
4spamguard.leadmon.net (union of all results)
3multi.uribl.com (result 127.0.0.2 = spam resource)
3dnsbl.sorbs.net (result 127.0.0.5 = open relay)
3multi.uribl.com (union of all results)
2dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
2rdts.dnsbl.net.au
2no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
2blackholes.brainerd.net
1spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1spamguard.leadmon.net (result 127.0.0.5 = open relay)
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
67639(total number of IP addresses whose names were tested, including 197 at SDSC)
33721(union of all domain zones)
25406l1.apews.org
23333abuse.rfc-ignorant.org
16262rddn.dnsbl.net.au
11512whois.rfc-ignorant.org (union of all results)
10757dynamic.rhs.mailpolice.com
6524whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4989whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
2341webmail.rhs.mailpolice.com
682adv.rhs.mailpolice.com
553rhsbl.ahbl.org
315multi.surbl.org
220multi.uribl.com (union of all results)
219multi.uribl.com (result 127.0.0.2 = spam resource)
59postmaster.rfc-ignorant.org
58bogusmx.rfc-ignorant.org
54dsn.rfc-ignorant.org (zone not intended for this use)
42bulk.rhs.mailpolice.com
38dob.sibl.support-intelligence.net
10rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
10rhsbl.sorbs.net (union of all results)
6bl.deadbeef.com
4porn.rhs.mailpolice.com
2ex.dnsbl.org
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)


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

HitsDNS Zone
40633(total number of domains tested, including 158 at SDSC)
11348(union of all domain zones)
4431whois.rfc-ignorant.org (union of all results)
4007whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2436bogusmx.rfc-ignorant.org
2285abuse.rfc-ignorant.org
1930postmaster.rfc-ignorant.org
1184multi.surbl.org
1091l1.apews.org
1069multi.uribl.com (union of all results)
1032multi.uribl.com (result 127.0.0.2 = spam resource)
755webmail.rhs.mailpolice.com
424whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
424dsn.rfc-ignorant.org
266adv.rhs.mailpolice.com
160porn.rhs.mailpolice.com
159rhsbl.ahbl.org
84bulk.rhs.mailpolice.com
35multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
33rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
33rhsbl.sorbs.net (union of all results)
30rddn.dnsbl.net.au (zone not intended for this use)
12ex.dnsbl.org
11dynamic.rhs.mailpolice.com
10dob.sibl.support-intelligence.net
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
2fraud.rhs.mailpolice.com
2bl.deadbeef.com


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