Blacklists Compared

10 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
72729(total number of IP addresses tested, including 194 at SDSC)
68769(union of most IP zones)
59417zen.spamhaus.org (union of all results)
58164l2.apews.org
54884t1.dnsbl.net.au
51102cbl.abuseat.org
51032zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
47681b.barracudacentral.org
37777zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
35331dnsbl-1.uceprotect.net
34800dnsbl-3.uceprotect.net
33788dnsbl-2.uceprotect.net
30339hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
29327ubl.unsubscore.com
27208psbl.surriel.com
24936dnsbl.sorbs.net (union of all results)
21688no-more-funn.moensted.dk (union of all results)
20586blackholes.five-ten-sg.com (union of all results)
17569blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
16225dnsbl.sorbs.net (result 127.0.0.10 = dialup)
11408bl.spamcop.net
11292no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
10366db.wpbl.info
8823zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
8670dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
8293no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
7997ix.dnsbl.manitu.net
7143spam.dnsbl.sorbs.net
4287bl.spamcannibal.org
3738dnsbl.inps.de
3715tr.countries.nerd.dk
3415list.dnswl.org (not a blacklist!)
3198korea.services.net
3118spamsources.fabel.dk
2536hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2382hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
2020blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
1890no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1708mail-abuse.blacklist.jippg.org
1494dnsbl.njabl.org (union of all results)
1456ips.backscatterer.org
1195dnsbl.njabl.org (result 127.0.0.9 = open proxy)
967rmst.dnsbl.net.au
967blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
957aspews.ext.sorbs.net
495countries.blackholes.us (result 127.7.6.4 = Thailand)
347countries.blackholes.us (result 127.1.5.6 = China)
298query.bondedsender.org (not a blacklist!)
283zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
270dnsbl.njabl.org (result 127.0.0.4 = spam source)
238hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
200accredit.habeas.com (not a blacklist!)
178no-more-funn.moensted.dk (result 127.0.0.9 = misc)
138dnsbl.sorbs.net (result 127.0.0.6 = spam source)
135zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
123iadb2.isipp.com (not a blacklist!)
112dnsbl.ahbl.org (union of all results)
91iadb.isipp.com (not a blacklist!)
84spamguard.leadmon.net (union of all results)
81dnsbl.ahbl.org (result 127.0.0.4 = spam source)
80spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
70no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
49bl.deadbeef.com
43l2.bbfh.ext.sorbs.net
37work.drbl.croco.net
36tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
36tor.dnsbl.sectoor.de (union of all results)
35probes.dnsbl.net.au
31dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
30dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
29dnsbl.njabl.org (result 127.0.0.2 = open relay)
26dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
16dnsbl-0.uceprotect.net
16blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
14blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
11multi.surbl.org
10countries.blackholes.us (result 127.0.3.2 = Argentina)
7blackholes.brainerd.net
6spam.wytnij.to
6multi.uribl.com (result 127.0.0.2 = spam resource)
6dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
6multi.uribl.com (union of all results)
5dnsbl.sorbs.net (result 127.0.0.5 = open relay)
3countries.blackholes.us (result 127.4.5.8 = Malaysia)
3spamguard.leadmon.net (result 127.0.0.8 = open proxy)
2countries.blackholes.us (result 127.3.9.2 = Japan)
2rdts.dnsbl.net.au
1countries.blackholes.us (result 127.5.6.6 = Nigeria)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
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
72729(total number of IP addresses whose names were tested, including 194 at SDSC)
35222(union of all domain zones)
27424l1.apews.org
25249abuse.rfc-ignorant.org
18134rddn.dnsbl.net.au
13490whois.rfc-ignorant.org (union of all results)
12278dynamic.rhs.mailpolice.com
8602whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4888whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1938webmail.rhs.mailpolice.com
643adv.rhs.mailpolice.com
284rhsbl.ahbl.org
172multi.surbl.org
157multi.uribl.com (result 127.0.0.2 = spam resource)
157multi.uribl.com (union of all results)
59postmaster.rfc-ignorant.org
53bogusmx.rfc-ignorant.org
49dsn.rfc-ignorant.org (zone not intended for this use)
41bulk.rhs.mailpolice.com
22rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
22rhsbl.sorbs.net (union of all results)
13dob.sibl.support-intelligence.net
10bl.deadbeef.com
5porn.rhs.mailpolice.com

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

HitsDNS Zone
48642(total number of domains tested, including 167 at SDSC)
12097(union of all domain zones)
4184bogusmx.rfc-ignorant.org
3587whois.rfc-ignorant.org (union of all results)
3218whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3014postmaster.rfc-ignorant.org
1981abuse.rfc-ignorant.org
1168multi.surbl.org
984l1.apews.org
962multi.uribl.com (union of all results)
934multi.uribl.com (result 127.0.0.2 = spam resource)
657webmail.rhs.mailpolice.com
390dsn.rfc-ignorant.org
369whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
257adv.rhs.mailpolice.com
199porn.rhs.mailpolice.com
156bulk.rhs.mailpolice.com
98rhsbl.ahbl.org
33rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
33rhsbl.sorbs.net (union of all results)
27multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
11rddn.dnsbl.net.au (zone not intended for this use)
11dob.sibl.support-intelligence.net
11ex.dnsbl.org
3fraud.rhs.mailpolice.com
3dynamic.rhs.mailpolice.com
2bl.deadbeef.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 15 January 2009.