Blacklists Compared

27 June 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 (all results but 127.0.0.2, 127.0.0.3, and 127.0.0.4), 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
171351(total number of IP addresses tested, including 225 at SDSC)
167908(union of most IP zones)
154828zen.spamhaus.org (union of all results)
148619l2.apews.org
126373cbl.abuseat.org
126343zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
121076b.barracudacentral.org
120748hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
111513dnsbl.sorbs.net (union of all results)
107194dnsbl-2.uceprotect.net
106974dnsbl-1.uceprotect.net
106017dnsbl-3.uceprotect.net
93215zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
85009dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
79561psbl.surriel.com
67981t1.dnsbl.net.au
62105hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
48196blackholes.five-ten-sg.com (union of all results)
47315ubl.unsubscore.com
45647no-more-funn.moensted.dk (union of all results)
43881blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
43645dnsbl.sorbs.net (result 127.0.0.10 = dialup)
41935bl.spamcop.net
30850no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
28700zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
27239db.wpbl.info
23489ix.dnsbl.manitu.net
17804mail-abuse.blacklist.jippg.org
15032spam.dnsbl.sorbs.net
13106no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
12138korea.services.net
11220dnsbl.inps.de
9339tr.countries.nerd.dk
9107bl.spamcannibal.org
9085hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
4670ips.backscatterer.org
3828spamsources.fabel.dk
3734list.dnswl.org (not a blacklist!)
3177hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
3061blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2544dnsbl.njabl.org (union of all results)
2265dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1903hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1230blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1198hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1092hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
988no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
750aspews.ext.sorbs.net
597no-more-funn.moensted.dk (result 127.0.0.9 = misc)
597l2.bbfh.ext.sorbs.net
446l1.bbfh.ext.sorbs.net
379dnsbl.sorbs.net (result 127.0.0.6 = spam source)
345query.bondedsender.org (not a blacklist!)
198accredit.habeas.com (not a blacklist!)
188zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
156dnsbl.njabl.org (result 127.0.0.2 = open relay)
149iadb2.isipp.com (not a blacklist!)
149no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
124tor.dnsbl.sectoor.de (union of all results)
123tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
123dnsbl.njabl.org (result 127.0.0.4 = spam source)
110iadb.isipp.com (not a blacklist!)
99dnsbl.ahbl.org (union of all results)
89bl.deadbeef.com
79dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
74probes.dnsbl.net.au
60spamguard.leadmon.net (union of all results)
58spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
47dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
45zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
45dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
23blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
20dnsbl.ahbl.org (result 127.0.0.4 = spam source)
13multi.uribl.com (union of all results)
8multi.surbl.org
7multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
6multi.uribl.com (result 127.0.0.2 = spam resource)
6rdts.dnsbl.net.au
5dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
4hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
3dnsbl-0.uceprotect.net
3dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2blackholes.brainerd.net
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1spamguard.leadmon.net (result 127.0.0.8 = open proxy)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)

Survey results for all known public domain-name-based DNS blacklists. Lookups were done on the domain names of connecting IP addresses. The "union of most domain zones" line includes data from the hostkarma.junkemailfilter.com zone only when the results are 127.0.0.2, 127.0.0.3, or 127.0.0.4 because other results are not blacklists.

HitsDNS Zone
171351(total number of IP addresses whose names were tested, including 225 at SDSC)
104654hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
93521hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
88646(union of most domain zones)
77851l1.apews.org
67097abuse.rfc-ignorant.org
51745rddn.dnsbl.net.au
34270dynamic.rhs.mailpolice.com
28263whois.rfc-ignorant.org (union of all results)
15858whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
12405whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
8320hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
3953webmail.rhs.mailpolice.com
3490hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
992hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
737adv.rhs.mailpolice.com
624rhsbl.ahbl.org
531hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
261hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
204dob.sibl.support-intelligence.net
178hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
62rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
62rhsbl.sorbs.net (union of all results)
58postmaster.rfc-ignorant.org
51multi.uribl.com (result 127.0.0.2 = spam resource)
51multi.uribl.com (union of all results)
44dsn.rfc-ignorant.org (zone not intended for this use)
43bogusmx.rfc-ignorant.org
35multi.surbl.org
32bulk.rhs.mailpolice.com
31hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
13porn.rhs.mailpolice.com
13bl.deadbeef.com

Survey results for all known public domain-name-based DNS blacklists. Lookups were done on SMTP sender domains. The "union of most domain zones" line includes data from the hostkarma.junkemailfilter.com zone only when the results are 127.0.0.2, 127.0.0.3, or 127.0.0.4 because other results are not blacklists.

HitsDNS Zone
40120(total number of domains tested, including 197 at SDSC)
34015hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
11855(union of most domain zones)
6303hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
5260whois.rfc-ignorant.org (union of all results)
4593whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4135hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
3236abuse.rfc-ignorant.org
2347hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1960l1.apews.org
1779hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1256bogusmx.rfc-ignorant.org
1161postmaster.rfc-ignorant.org
1125multi.surbl.org
1090hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
1073multi.uribl.com (union of all results)
1051multi.uribl.com (result 127.0.0.2 = spam resource)
900webmail.rhs.mailpolice.com
667whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
635hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
519rddn.dnsbl.net.au (zone not intended for this use)
360dsn.rfc-ignorant.org
283adv.rhs.mailpolice.com
238dob.sibl.support-intelligence.net
214dynamic.rhs.mailpolice.com
142porn.rhs.mailpolice.com
121bulk.rhs.mailpolice.com
108rhsbl.ahbl.org
53hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
37hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
29rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
29rhsbl.sorbs.net (union of all results)
22multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
12ex.dnsbl.org
2fraud.rhs.mailpolice.com
2hostkarma.junkemailfilter.com (result 127.0.1.3 = MTA somtimes sends QUIT)
2bl.deadbeef.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 1 July 2009.