Blacklists Compared

23 February 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
222405(total number of IP addresses tested, including 466 at SDSC)
213531(union of most IP zones)
191713l2.apews.org
185853zen.spamhaus.org (union of all results)
173523t1.dnsbl.net.au
132190cbl.abuseat.org
132080zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
118245zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
112223dnsbl-3.uceprotect.net
111475dnsbl-2.uceprotect.net
99105psbl.surriel.com
97178dnsbl-1.uceprotect.net
91836dnsbl.sorbs.net (union of all results)
87474no-more-funn.moensted.dk (union of all results)
82384dnsbl.sorbs.net (result 127.0.0.10 = dialup)
81056blackholes.five-ten-sg.com (union of all results)
75302blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
70221hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
69894no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
67837ubl.unsubscore.com
52986sbl.csma.biz
43188bl.spamcop.net
41932bl.csma.biz
35999ix.dnsbl.manitu.net
30360zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
25897db.wpbl.info
16538no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
15486unconfirmed.dsbl.org
15389list.dsbl.org
15378dsbl.dnsbl.net.au
13892bl.spamcannibal.org
12397tr.countries.nerd.dk
10330countries.blackholes.us (result 127.7.9.2 = Turkey)
9711countries.blackholes.us (result 127.1.5.6 = China)
9015dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
9014korea.services.net
8486countries.blackholes.us (result 127.0.7.6 = Brazil)
8339mail-abuse.blacklist.jippg.org
8135countries.blackholes.us (result 127.4.1.0 = Korea)
7673countries.blackholes.us (result 127.6.4.3 = Russia)
7024rmst.dnsbl.net.au
7022ips.backscatterer.org
5019dnsbl.njabl.org (union of all results)
4723dnsbl.njabl.org (result 127.0.0.9 = open proxy)
4664blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4514list.dnswl.org (not a blacklist!)
4228countries.blackholes.us (result 127.0.3.2 = Argentina)
3867countries.blackholes.us (result 127.4.8.4 = Mexico)
3045spamsources.fabel.dk
2940dnsbl.ahbl.org (union of all results)
2739dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2260hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2165aspews.ext.sorbs.net
1621countries.blackholes.us (result 127.7.6.4 = Thailand)
1581countries.blackholes.us (result 127.3.9.2 = Japan)
1102zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1019blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
969hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
830countries.blackholes.us (result 127.4.5.8 = Malaysia)
777zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
715countries.blackholes.us (result 127.1.5.8 = Taiwan)
711no-more-funn.moensted.dk (result 127.0.0.9 = misc)
642probes.dnsbl.net.au
398countries.blackholes.us (result 127.3.4.4 = Hong Kong)
342countries.blackholes.us (result 127.7.0.2 = Singapore)
316dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
293dnsbl.sorbs.net (result 127.0.0.6 = spam source)
291dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
257no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
252bl.deadbeef.com
217work.drbl.croco.net
214query.bondedsender.org (not a blacklist!)
212dnsbl.njabl.org (result 127.0.0.4 = spam source)
170accredit.habeas.com (not a blacklist!)
162iadb2.isipp.com (not a blacklist!)
156iadb.isipp.com (not a blacklist!)
124no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
122multi.surbl.org
119hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
106dnsbl.ahbl.org (result 127.0.0.4 = spam source)
102dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
84dnsbl.njabl.org (result 127.0.0.2 = open relay)
84multihop.dsbl.org
45blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
43relays.nether.net
41exemptions.ahbl.org (not a blacklist!)
38countries.blackholes.us (result 127.5.6.6 = Nigeria)
35dnsbl.ahbl.org (result 127.0.0.15 = open relay)
34dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
33rdts.dnsbl.net.au
31spamguard.leadmon.net (union of all results)
26multi.uribl.com (result 127.0.0.2 = spam resource)
26blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
26multi.uribl.com (union of all results)
22spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
19dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
14spam.wytnij.to
7spamguard.leadmon.net (result 127.0.0.8 = open proxy)
7blackholes.brainerd.net
5ohps.dnsbl.net.au
4dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1owps.dnsbl.net.au
1spamsites.dnsbl.net.au
1osps.dnsbl.net.au
1osrs.dnsbl.net.au
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1dob.sibl.support-intelligence.net
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
1dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)


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

HitsDNS Zone
222405(total number of IP addresses whose names were tested, including 466 at SDSC)
138798(union of all domain zones)
118322l1.apews.org
88937abuse.rfc-ignorant.org
85633rddn.dnsbl.net.au
60832whois.rfc-ignorant.org (union of all results)
56021dynamic.rhs.mailpolice.com
43841whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
16991whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
8886webmail.rhs.mailpolice.com
792multi.surbl.org
779multi.uribl.com (union of all results)
777multi.uribl.com (result 127.0.0.2 = spam resource)
578adv.rhs.mailpolice.com
146bl.deadbeef.com
105rhsbl.ahbl.org
96postmaster.rfc-ignorant.org
77bulk.rhs.mailpolice.com
72bogusmx.rfc-ignorant.org
65dsn.rfc-ignorant.org (zone not intended for this use)
58dob.sibl.support-intelligence.net
18rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
18rhsbl.sorbs.net (union of all results)
11porn.rhs.mailpolice.com
2multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
2blackhole.securitysage.com
1ex.dnsbl.org


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

HitsDNS Zone
135785(total number of domains tested, including 435 at SDSC)
33872(union of all domain zones)
17715whois.rfc-ignorant.org (union of all results)
17077whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
7370bogusmx.rfc-ignorant.org
4230abuse.rfc-ignorant.org
2376multi.surbl.org
2193multi.uribl.com (union of all results)
2107multi.uribl.com (result 127.0.0.2 = spam resource)
1941postmaster.rfc-ignorant.org
1514l1.apews.org
1354webmail.rhs.mailpolice.com
930dsn.rfc-ignorant.org
638whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
522porn.rhs.mailpolice.com
227adv.rhs.mailpolice.com
222bulk.rhs.mailpolice.com
222rhsbl.ahbl.org
168blackhole.securitysage.com
80multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
65rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
65rhsbl.sorbs.net (union of all results)
41rddn.dnsbl.net.au (zone not intended for this use)
26dynamic.rhs.mailpolice.com
16ex.dnsbl.org
7dob.sibl.support-intelligence.net
6multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
5bl.deadbeef.com
2fraud.rhs.mailpolice.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 29 February 2008.