Blacklists Compared

17 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
72254(total number of IP addresses tested, including 211 at SDSC)
67887(union of most IP zones)
57071zen.spamhaus.org (union of all results)
55792l2.apews.org
52337t1.dnsbl.net.au
48800b.barracudacentral.org
47366zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
41770cbl.abuseat.org
36044zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
33163dnsbl-1.uceprotect.net
31886dnsbl-3.uceprotect.net
31250dnsbl-2.uceprotect.net
29265hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
25352psbl.surriel.com
24458ubl.unsubscore.com
22734dnsbl.sorbs.net (union of all results)
22083blackholes.five-ten-sg.com (union of all results)
20981no-more-funn.moensted.dk (union of all results)
18887blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
14668dnsbl.sorbs.net (result 127.0.0.10 = dialup)
12797db.wpbl.info
11324bl.spamcop.net
10627no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
9197no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
8451ix.dnsbl.manitu.net
7981dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
7847zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
7129spam.dnsbl.sorbs.net
4205bl.spamcannibal.org
4035korea.services.net
3812dnsbl.inps.de
3678list.dnswl.org (not a blacklist!)
2984spamsources.fabel.dk
2795tr.countries.nerd.dk
2618hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2411hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
2111ips.backscatterer.org
2110blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
1748mail-abuse.blacklist.jippg.org
1545dnsbl.njabl.org (union of all results)
1177dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1036blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
948rmst.dnsbl.net.au
940no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
880aspews.ext.sorbs.net
331dnsbl.njabl.org (result 127.0.0.4 = spam source)
316query.bondedsender.org (not a blacklist!)
281zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
262hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
190accredit.habeas.com (not a blacklist!)
169no-more-funn.moensted.dk (result 127.0.0.9 = misc)
168dnsbl.sorbs.net (result 127.0.0.6 = spam source)
157iadb2.isipp.com (not a blacklist!)
119iadb.isipp.com (not a blacklist!)
116zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
96dnsbl.ahbl.org (union of all results)
89no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
62bl.deadbeef.com
60dnsbl.ahbl.org (result 127.0.0.4 = spam source)
45l2.bbfh.ext.sorbs.net
38probes.dnsbl.net.au
37dnsbl.njabl.org (result 127.0.0.2 = open relay)
36dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
34blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
28dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
27tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
27tor.dnsbl.sectoor.de (union of all results)
26dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
17spamguard.leadmon.net (union of all results)
14dnsbl-0.uceprotect.net
14blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
13spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
9multi.surbl.org
7multi.uribl.com (result 127.0.0.2 = spam resource)
7multi.uribl.com (union of all results)
4spam.wytnij.to
3dnsbl.sorbs.net (result 127.0.0.5 = open relay)
3blackholes.brainerd.net
2dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
2rdts.dnsbl.net.au
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2spamguard.leadmon.net (result 127.0.0.8 = open proxy)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
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
72254(total number of IP addresses whose names were tested, including 211 at SDSC)
33808(union of all domain zones)
25194l1.apews.org
24318abuse.rfc-ignorant.org
17242rddn.dnsbl.net.au
12747whois.rfc-ignorant.org (union of all results)
12022dynamic.rhs.mailpolice.com
8041whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4706whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
2003webmail.rhs.mailpolice.com
682adv.rhs.mailpolice.com
346rhsbl.ahbl.org
216multi.surbl.org
179multi.uribl.com (result 127.0.0.2 = spam resource)
179multi.uribl.com (union of all results)
57postmaster.rfc-ignorant.org
50dsn.rfc-ignorant.org (zone not intended for this use)
42bogusmx.rfc-ignorant.org
41bulk.rhs.mailpolice.com
21rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
21rhsbl.sorbs.net (union of all results)
19dob.sibl.support-intelligence.net
5porn.rhs.mailpolice.com
3bl.deadbeef.com
1ex.dnsbl.org

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

HitsDNS Zone
53274(total number of domains tested, including 192 at SDSC)
13459(union of all domain zones)
4488whois.rfc-ignorant.org (union of all results)
4044whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3989bogusmx.rfc-ignorant.org
3016postmaster.rfc-ignorant.org
2542abuse.rfc-ignorant.org
1216multi.surbl.org
1167l1.apews.org
1048multi.uribl.com (union of all results)
1010multi.uribl.com (result 127.0.0.2 = spam resource)
782webmail.rhs.mailpolice.com
466dsn.rfc-ignorant.org
444whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
268adv.rhs.mailpolice.com
189porn.rhs.mailpolice.com
115bulk.rhs.mailpolice.com
100rhsbl.ahbl.org
36multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
36rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
36rhsbl.sorbs.net (union of all results)
24rddn.dnsbl.net.au (zone not intended for this use)
13dynamic.rhs.mailpolice.com
13ex.dnsbl.org
3dob.sibl.support-intelligence.net
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
2bl.deadbeef.com
1fraud.rhs.mailpolice.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 23 January 2009.