Blacklists Compared

15 September 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 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
230409(total number of IP addresses tested, including 520 at SDSC)
220865(union of most IP zones)
192782l2.apews.org
178874zen.spamhaus.org (union of all results)
169889t1.dnsbl.net.au
138589pbl.spamhaus.org (union of all results)
132226dnsbl.tqmcube.com (union of all results)
130621dnsbl.sorbs.net (union of all results)
116125psbl.surriel.com
115813sbl-xbl.spamhaus.org (union of all results)
115745cbl.abuseat.org
115103sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
114991xbl.spamhaus.org (union of all results)
114917zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
114742xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
113645dynablock.njabl.org
113153zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
113106pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
109530no-more-funn.moensted.dk (union of all results)
101023blackholes.five-ten-sg.com (union of all results)
98276dnsbl-1.uceprotect.net
95061blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
94213dnsbl.sorbs.net (result 127.0.0.10 = dialup)
80132dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
76827no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
61832dnsbl-3.uceprotect.net
50190ubl.unsubscore.com
49944hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
40937bl.spamcop.net
40082dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
36920dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
34597dnsbl-2.uceprotect.net
30724no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
30275db.wpbl.info
25532zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
25483pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
23201korea.services.net
22848dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
21463countries.blackholes.us (result 127.4.1.0 = Korea)
19810ix.dnsbl.manitu.net
16729mail-abuse.blacklist.jippg.org
16248unconfirmed.dsbl.org
16081list.dsbl.org
16077dsbl.dnsbl.net.au
12011ips.backscatterer.org
10723dnsbl.tqmcube.com (result 127.0.0.5 = China)
10603countries.blackholes.us (result 127.1.5.6 = China)
10018countries.blackholes.us (result 127.0.7.6 = Brazil)
9239tr.countries.nerd.dk
8958countries.blackholes.us (result 127.7.9.2 = Turkey)
7581countries.blackholes.us (result 127.6.4.3 = Russia)
5170bl.spamcannibal.org
5062spamsources.fabel.dk
4780dnsbl.njabl.org (union of all results)
4765blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4516dnsbl.njabl.org (result 127.0.0.9 = open proxy)
4353countries.blackholes.us (result 127.4.8.4 = Mexico)
4342rmst.dnsbl.net.au
4177list.dnswl.org (not a blacklist!)
3572countries.blackholes.us (result 127.0.3.2 = Argentina)
3332dnsbl.ahbl.org (union of all results)
3148dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2993bl.csma.biz
2243countries.blackholes.us (result 127.3.9.2 = Japan)
2139countries.blackholes.us (result 127.7.6.4 = Thailand)
1669probes.dnsbl.net.au
1426hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1327countries.blackholes.us (result 127.4.5.8 = Malaysia)
1124countries.blackholes.us (result 127.1.5.8 = Taiwan)
1111blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1066hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
978no-more-funn.moensted.dk (result 127.0.0.9 = misc)
962zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
961sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
958xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
755no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
719sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
719sbl.spamhaus.org
718zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
595countries.blackholes.us (result 127.3.4.4 = Hong Kong)
407aspews.ext.sorbs.net
363no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
363blackholes.uceb.org (union of all results)
349countries.blackholes.us (result 127.7.0.2 = Singapore)
328dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
312blackholes.uceb.org (result 127.0.0.6 = spam haven)
312work.drbl.croco.net
291dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
222multi.surbl.org
185query.bondedsender.org (not a blacklist!)
151iadb2.isipp.com (not a blacklist!)
150dnsbl.njabl.org (result 127.0.0.4 = spam source)
150iadb.isipp.com (not a blacklist!)
149blackholes.uceb.org (result 127.0.0.3 = spam source)
144multi.uribl.com (result 127.0.0.2 = spam resource)
144multi.uribl.com (union of all results)
137accredit.habeas.com (not a blacklist!)
129multihop.dsbl.org
124bl.deadbeef.com
113dnsbl.njabl.org (result 127.0.0.2 = open relay)
103dnsbl.ahbl.org (result 127.0.0.4 = spam source)
92spam.wytnij.to
76dnsbl.sorbs.net (result 127.0.0.6 = spam source)
74relays.nether.net
49hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
44dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
43blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
38blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
32dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
31countries.blackholes.us (result 127.5.6.6 = Nigeria)
26rdts.dnsbl.net.au
26dnsbl.ahbl.org (result 127.0.0.15 = open relay)
25blackholes.uceb.org (result 127.0.0.2 = open relay)
25ohps.dnsbl.net.au
18blackholes.brainerd.net
17exemptions.ahbl.org (not a blacklist!)
16spamguard.leadmon.net (union of all results)
15blackholes.uceb.org (result 127.0.0.5 = dialup)
7spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
7spamguard.leadmon.net (result 127.0.0.3 = spam source)
5dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
4no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
3osps.dnsbl.net.au
3dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
3dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
2osrs.dnsbl.net.au
2spamguard.leadmon.net (result 127.0.0.8 = open proxy)
2no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
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)
2dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1owps.dnsbl.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
1tor.dnsbl.sectoor.de (union of all results)


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

HitsDNS Zone
230409(total number of IP addresses whose names were tested, including 520 at SDSC)
146582(union of all domain zones)
131052l1.apews.org
101227rddn.dnsbl.net.au
97893abuse.rfc-ignorant.org
58074dynamic.rhs.mailpolice.com
53221whois.rfc-ignorant.org (union of all results)
35256whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
17966whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
10922webmail.rhs.mailpolice.com
663multi.surbl.org
611multi.uribl.com (union of all results)
607multi.uribl.com (result 127.0.0.2 = spam resource)
536adv.rhs.mailpolice.com
134bl.deadbeef.com
119postmaster.rfc-ignorant.org
106rhsbl.ahbl.org
101bulk.rhs.mailpolice.com
87dsn.rfc-ignorant.org (zone not intended for this use)
86bogusmx.rfc-ignorant.org
36rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
36rhsbl.sorbs.net (union of all results)
17porn.rhs.mailpolice.com
3multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
2blackhole.securitysage.com
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1fraud.rhs.mailpolice.com


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

HitsDNS Zone
225065(total number of domains tested, including 456 at SDSC)
46849(union of all domain zones)
25236whois.rfc-ignorant.org (union of all results)
24520whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
9674bogusmx.rfc-ignorant.org
5268abuse.rfc-ignorant.org
3220multi.surbl.org
2640multi.uribl.com (union of all results)
2574multi.uribl.com (result 127.0.0.2 = spam resource)
2411l1.apews.org
2059postmaster.rfc-ignorant.org
1890webmail.rhs.mailpolice.com
1147dsn.rfc-ignorant.org
887porn.rhs.mailpolice.com
716whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
470rhsbl.ahbl.org
400bulk.rhs.mailpolice.com
213blackhole.securitysage.com
198adv.rhs.mailpolice.com
151rddn.dnsbl.net.au (zone not intended for this use)
117dynamic.rhs.mailpolice.com
93rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
93rhsbl.sorbs.net (union of all results)
65multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
14ex.dnsbl.org
3bl.deadbeef.com
2fraud.rhs.mailpolice.com
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 22 September 2007.